./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-invariants/recursified_eq1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-invariants/recursified_eq1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU --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 ccc7a7f0e01a15625c463b7f9ff86edec643fb5abfd6d827cfe7837ab94b8fae --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:09,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:09,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:59:09,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:09,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:09,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:09,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:09,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:09,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:09,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:09,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:09,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:09,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:09,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:09,740 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:09,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:09,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:59:09,741 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:59:09,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:09,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:59:09,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:09,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:59:09,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:09,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:59:09,751 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:09,751 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:59:09,751 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:09,752 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:09,752 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:09,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:09,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:09,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:09,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:09,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:09,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:09,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:59:09,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:09,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:09,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:09,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:09,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:09,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:09,761 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc7a7f0e01a15625c463b7f9ff86edec643fb5abfd6d827cfe7837ab94b8fae [2024-10-31 21:59:10,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:10,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:10,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:10,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:10,116 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:10,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/recursified_loop-invariants/recursified_eq1.c Unable to find full path for "g++" [2024-10-31 21:59:12,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:12,640 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:12,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/sv-benchmarks/c/recursified_loop-invariants/recursified_eq1.c [2024-10-31 21:59:12,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/data/645ffd7bb/0c0755ba9cd74e59b071f8fd3e9ffed4/FLAG203871244 [2024-10-31 21:59:13,035 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/data/645ffd7bb/0c0755ba9cd74e59b071f8fd3e9ffed4 [2024-10-31 21:59:13,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:13,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:13,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:13,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:13,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:13,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd89742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13, skipping insertion in model container [2024-10-31 21:59:13,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:59:13,395 WARN L251 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_9158db64-07d3-457f-b6b2-a08880beb449/sv-benchmarks/c/recursified_loop-invariants/recursified_eq1.c[973,986] [2024-10-31 21:59:13,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:13,431 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:59:13,453 WARN L251 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_9158db64-07d3-457f-b6b2-a08880beb449/sv-benchmarks/c/recursified_loop-invariants/recursified_eq1.c[973,986] [2024-10-31 21:59:13,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:13,491 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:59:13,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13 WrapperNode [2024-10-31 21:59:13,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:13,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:13,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:59:13,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:59:13,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,545 INFO L138 Inliner]: procedures = 15, calls = 46, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-10-31 21:59:13,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:13,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:59:13,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:59:13,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:59:13,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,593 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 4, 6, 4, 5, 5]. 23 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 6, 1, 1, 1]. The 4 writes are split as follows [0, 1, 0, 1, 1, 1]. [2024-10-31 21:59:13,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:59:13,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:59:13,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:59:13,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:59:13,632 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (1/1) ... [2024-10-31 21:59:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:13,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:13,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:13,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:59:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:59:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:59:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 21:59:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 21:59:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 21:59:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 21:59:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 21:59:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_16_to_20_0 [2024-10-31 21:59:13,761 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_16_to_20_0 [2024-10-31 21:59:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 21:59:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 21:59:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 21:59:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 21:59:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-31 21:59:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-31 21:59:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:59:13,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:59:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 21:59:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 21:59:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 21:59:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 21:59:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-31 21:59:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-31 21:59:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 21:59:13,945 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:59:13,951 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:59:14,175 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-31 21:59:14,175 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:59:14,189 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:59:14,189 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:59:14,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:14 BoogieIcfgContainer [2024-10-31 21:59:14,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:59:14,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:59:14,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:59:14,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:59:14,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:59:13" (1/3) ... [2024-10-31 21:59:14,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fba8329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:14, skipping insertion in model container [2024-10-31 21:59:14,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:13" (2/3) ... [2024-10-31 21:59:14,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fba8329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:14, skipping insertion in model container [2024-10-31 21:59:14,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:14" (3/3) ... [2024-10-31 21:59:14,200 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_eq1.c [2024-10-31 21:59:14,220 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:59:14,221 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:59:14,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:59:14,300 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;@7f1ea385, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:59:14,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:59:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 21:59:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 21:59:14,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:14,315 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:14,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:14,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1556237671, now seen corresponding path program 1 times [2024-10-31 21:59:14,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516403153] [2024-10-31 21:59:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:15,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 21:59:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516403153] [2024-10-31 21:59:15,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516403153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:15,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:15,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:59:15,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146343169] [2024-10-31 21:59:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:15,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:59:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:59:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:15,384 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:15,565 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-10-31 21:59:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:59:15,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-31 21:59:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:15,585 INFO L225 Difference]: With dead ends: 39 [2024-10-31 21:59:15,586 INFO L226 Difference]: Without dead ends: 26 [2024-10-31 21:59:15,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:15,597 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:15,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-31 21:59:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2024-10-31 21:59:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 21:59:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-10-31 21:59:15,666 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2024-10-31 21:59:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:15,667 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-31 21:59:15,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-10-31 21:59:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 21:59:15,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:15,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:15,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:59:15,672 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:15,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1556297253, now seen corresponding path program 1 times [2024-10-31 21:59:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280180421] [2024-10-31 21:59:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:15,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 21:59:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280180421] [2024-10-31 21:59:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280180421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:59:16,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503135392] [2024-10-31 21:59:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:16,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:59:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:59:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:59:16,050 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:16,161 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-10-31 21:59:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:59:16,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-31 21:59:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:16,166 INFO L225 Difference]: With dead ends: 32 [2024-10-31 21:59:16,166 INFO L226 Difference]: Without dead ends: 26 [2024-10-31 21:59:16,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:59:16,171 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:16,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-31 21:59:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-31 21:59:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:59:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-10-31 21:59:16,195 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 12 [2024-10-31 21:59:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:16,195 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-10-31 21:59:16,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-10-31 21:59:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-31 21:59:16,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:16,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:16,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:59:16,201 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:16,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash -738073117, now seen corresponding path program 1 times [2024-10-31 21:59:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:16,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868369202] [2024-10-31 21:59:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:16,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 21:59:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:17,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:59:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868369202] [2024-10-31 21:59:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868369202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563499212] [2024-10-31 21:59:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:17,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:17,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:59:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:17,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-31 21:59:17,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:17,757 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 29 treesize of output 17 [2024-10-31 21:59:17,763 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 31 treesize of output 19 [2024-10-31 21:59:17,791 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 49 treesize of output 37 [2024-10-31 21:59:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:59:17,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:18,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-31 21:59:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:30,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563499212] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:30,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:30,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-10-31 21:59:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148406719] [2024-10-31 21:59:30,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:30,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:59:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:30,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:59:30,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=157, Unknown=3, NotChecked=0, Total=210 [2024-10-31 21:59:30,983 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:59:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:31,733 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-10-31 21:59:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:59:31,734 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 18 [2024-10-31 21:59:31,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:31,735 INFO L225 Difference]: With dead ends: 34 [2024-10-31 21:59:31,735 INFO L226 Difference]: Without dead ends: 28 [2024-10-31 21:59:31,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=78, Invalid=225, Unknown=3, NotChecked=0, Total=306 [2024-10-31 21:59:31,737 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:31,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 63 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 21:59:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-31 21:59:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2024-10-31 21:59:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 21:59:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-31 21:59:31,752 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 18 [2024-10-31 21:59:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:31,752 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 21:59:31,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:59:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-31 21:59:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-31 21:59:31,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:31,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:31,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:31,954 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:31,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1324938713, now seen corresponding path program 1 times [2024-10-31 21:59:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:31,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070232978] [2024-10-31 21:59:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 21:59:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:59:32,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070232978] [2024-10-31 21:59:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070232978] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217910075] [2024-10-31 21:59:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:32,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:32,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:59:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:33,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-31 21:59:33,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:33,226 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 29 treesize of output 17 [2024-10-31 21:59:33,231 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 31 treesize of output 19 [2024-10-31 21:59:33,257 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 49 treesize of output 37 [2024-10-31 21:59:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:59:33,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:33,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-31 21:59:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:43,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217910075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:43,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:43,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2024-10-31 21:59:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149321442] [2024-10-31 21:59:43,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:43,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-31 21:59:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 21:59:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2024-10-31 21:59:43,924 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:59:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:44,651 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-10-31 21:59:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:59:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 18 [2024-10-31 21:59:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:44,653 INFO L225 Difference]: With dead ends: 22 [2024-10-31 21:59:44,653 INFO L226 Difference]: Without dead ends: 0 [2024-10-31 21:59:44,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=83, Invalid=296, Unknown=1, NotChecked=0, Total=380 [2024-10-31 21:59:44,654 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:44,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 21:59:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-31 21:59:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-31 21:59:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-31 21:59:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 21:59:44,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2024-10-31 21:59:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:44,658 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 21:59:44,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:59:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-31 21:59:44,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-31 21:59:44,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 21:59:44,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:59:44,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-31 21:59:44,869 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 21:59:44,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-31 21:59:45,881 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 21:59:45,892 WARN L156 FloydHoareUtils]: Requires clause for func_to_recursive_line_16_to_20_0 contained old-variable. Original clause: (and (= |#memory_int#4| |old(#memory_int#4)|) (= |#memory_int#5| |old(#memory_int#5)|) (= |#memory_int#1| |old(#memory_int#1)|) (= |#memory_int#3| |old(#memory_int#3)|)) Eliminated clause: true [2024-10-31 21:59:45,910 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-31 21:59:45,911 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] [2024-10-31 21:59:45,911 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-10-31 21:59:45,912 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-31 21:59:45,912 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-10-31 21:59:45,912 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~z!base,]]] [2024-10-31 21:59:45,914 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-31 21:59:45,914 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-31 21:59:45,914 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~z!base,]]] [2024-10-31 21:59:45,915 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-31 21:59:45,915 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-31 21:59:45,915 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-31 21:59:45,915 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#5 [2024-10-31 21:59:45,916 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#5,GLOBAL] [2024-10-31 21:59:45,916 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#5,GLOBAL],[IdentifierExpression[#in~w!base,]]] [2024-10-31 21:59:45,916 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-31 21:59:45,916 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-10-31 21:59:45,917 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] [2024-10-31 21:59:45,917 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-31 21:59:45,917 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-10-31 21:59:45,917 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~x!base,]]] [2024-10-31 21:59:45,918 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#5 [2024-10-31 21:59:45,918 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]] [2024-10-31 21:59:45,918 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]],[IdentifierExpression[#in~w!base,]]] [2024-10-31 21:59:45,918 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-31 21:59:45,919 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-10-31 21:59:45,919 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~z!base,]]] [2024-10-31 21:59:45,922 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-31 21:59:45,926 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] [2024-10-31 21:59:45,926 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-10-31 21:59:45,927 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#4 [2024-10-31 21:59:45,927 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] [2024-10-31 21:59:45,927 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-10-31 21:59:45,927 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-31 21:59:45,928 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-31 21:59:45,928 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~z!base,]]] [2024-10-31 21:59:45,928 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-31 21:59:45,928 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-10-31 21:59:45,928 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~x!base,]]] [2024-10-31 21:59:45,928 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#5 [2024-10-31 21:59:45,929 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]] [2024-10-31 21:59:45,929 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]],[IdentifierExpression[#in~w!base,]]] [2024-10-31 21:59:45,929 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-10-31 21:59:45,929 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-10-31 21:59:45,929 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] [2024-10-31 21:59:45,930 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#5 [2024-10-31 21:59:45,930 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#5,GLOBAL] [2024-10-31 21:59:45,930 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#5,GLOBAL],[IdentifierExpression[#in~w!base,]]] [2024-10-31 21:59:45,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 09:59:45 BoogieIcfgContainer [2024-10-31 21:59:45,934 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 21:59:45,936 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 21:59:45,936 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 21:59:45,936 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 21:59:45,937 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:14" (3/4) ... [2024-10-31 21:59:45,939 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 21:59:45,945 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_16_to_20_0 [2024-10-31 21:59:45,949 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-10-31 21:59:45,950 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-31 21:59:45,951 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-31 21:59:45,951 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-31 21:59:45,951 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-31 21:59:46,066 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 21:59:46,066 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 21:59:46,067 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 21:59:46,067 INFO L158 Benchmark]: Toolchain (without parser) took 33027.94ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 104.1MB in the beginning and 63.9MB in the end (delta: 40.2MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,068 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory was 70.7MB in the beginning and 70.7MB in the end (delta: 34.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 21:59:46,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.28ms. Allocated memory is still 140.5MB. Free memory was 103.7MB in the beginning and 91.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.17ms. Allocated memory is still 140.5MB. Free memory was 91.1MB in the beginning and 89.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,069 INFO L158 Benchmark]: Boogie Preprocessor took 78.16ms. Allocated memory is still 140.5MB. Free memory was 89.3MB in the beginning and 87.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,069 INFO L158 Benchmark]: RCFGBuilder took 563.12ms. Allocated memory is still 140.5MB. Free memory was 87.4MB in the beginning and 109.8MB in the end (delta: -22.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,070 INFO L158 Benchmark]: TraceAbstraction took 31742.29ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 109.0MB in the beginning and 69.2MB in the end (delta: 39.9MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,070 INFO L158 Benchmark]: Witness Printer took 131.07ms. Allocated memory is still 169.9MB. Free memory was 69.2MB in the beginning and 63.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-31 21:59:46,072 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory was 70.7MB in the beginning and 70.7MB in the end (delta: 34.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.28ms. Allocated memory is still 140.5MB. Free memory was 103.7MB in the beginning and 91.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.17ms. Allocated memory is still 140.5MB. Free memory was 91.1MB in the beginning and 89.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.16ms. Allocated memory is still 140.5MB. Free memory was 89.3MB in the beginning and 87.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 563.12ms. Allocated memory is still 140.5MB. Free memory was 87.4MB in the beginning and 109.8MB in the end (delta: -22.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 31742.29ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 109.0MB in the beginning and 69.2MB in the end (delta: 39.9MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. * Witness Printer took 131.07ms. Allocated memory is still 169.9MB. Free memory was 69.2MB in the beginning and 63.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~z!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~z!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#5,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#5,GLOBAL],[IdentifierExpression[#in~w!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]],[IdentifierExpression[#in~w!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~z!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#4,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#4,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#4,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~z!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#5,GLOBAL]],[IdentifierExpression[#in~w!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#5,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#5,GLOBAL],[IdentifierExpression[#in~w!base,]]] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 27]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 230 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 175 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 281 IncrementalHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 55 mSDtfsCounter, 281 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 23.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 8 QuantifiedInterpolants, 1888 SizeOfPredicates, 20 NumberOfNonLiveVariables, 382 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-31 21:59:46,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9158db64-07d3-457f-b6b2-a08880beb449/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE