./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC --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 85b1d2ec59250ca50e4af3cfea516d1a969ce9b16ea60a43749666e7f67d56c7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:44:32,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:44:32,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:44:32,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:44:32,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:44:32,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:44:32,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:44:32,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:44:32,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:44:32,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:44:32,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:44:32,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:44:32,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:44:32,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:44:32,501 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:44:32,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:44:32,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:44:32,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:44:32,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:44:32,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:44:32,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:44:32,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:44:32,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:44:32,503 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:32,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:32,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:32,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:32,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:44:32,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:32,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:32,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:32,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:32,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:44:32,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:44:32,505 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:44:32,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:44:32,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:44:32,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:44:32,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:44:32,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:44:32,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:44:32,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:44:32,506 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_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC 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 -> 85b1d2ec59250ca50e4af3cfea516d1a969ce9b16ea60a43749666e7f67d56c7 [2024-11-24 00:44:32,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:44:32,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:44:32,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:44:32,851 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:44:32,851 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:44:32,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i [2024-11-24 00:44:35,827 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/dd1910c2f/118722eaa3a94cc38a4962a4120dd35b/FLAG537b5a4f0 [2024-11-24 00:44:36,139 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:44:36,140 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i [2024-11-24 00:44:36,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/dd1910c2f/118722eaa3a94cc38a4962a4120dd35b/FLAG537b5a4f0 [2024-11-24 00:44:36,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/dd1910c2f/118722eaa3a94cc38a4962a4120dd35b [2024-11-24 00:44:36,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:44:36,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:44:36,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:36,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:44:36,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:44:36,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678993d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36, skipping insertion in model container [2024-11-24 00:44:36,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:44:36,387 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_4395a65e-b179-4f51-ab82-e8717ab187b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i[915,928] [2024-11-24 00:44:36,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:36,459 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:44:36,474 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_4395a65e-b179-4f51-ab82-e8717ab187b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i[915,928] [2024-11-24 00:44:36,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:36,505 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:44:36,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36 WrapperNode [2024-11-24 00:44:36,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:36,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:36,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:44:36,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:44:36,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,546 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2024-11-24 00:44:36,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:36,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:44:36,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:44:36,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:44:36,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,574 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:44:36,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,584 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:44:36,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:44:36,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:44:36,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:44:36,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (1/1) ... [2024-11-24 00:44:36,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:36,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:36,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:44:36,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:44:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:44:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:44:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:44:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:44:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:44:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:44:36,793 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:44:36,794 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:44:37,046 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-24 00:44:37,046 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:44:37,058 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:44:37,058 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:44:37,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:37 BoogieIcfgContainer [2024-11-24 00:44:37,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:44:37,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:44:37,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:44:37,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:44:37,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:44:36" (1/3) ... [2024-11-24 00:44:37,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad026b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:37, skipping insertion in model container [2024-11-24 00:44:37,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:36" (2/3) ... [2024-11-24 00:44:37,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad026b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:37, skipping insertion in model container [2024-11-24 00:44:37,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:37" (3/3) ... [2024-11-24 00:44:37,070 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-80.i [2024-11-24 00:44:37,089 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:44:37,091 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount10_file-80.i that has 2 procedures, 37 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:44:37,148 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:44:37,161 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;@537b0379, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:44:37,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:44:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 00:44:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:44:37,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:37,174 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:37,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:37,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash 211231747, now seen corresponding path program 1 times [2024-11-24 00:44:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012988476] [2024-11-24 00:44:37,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-24 00:44:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012988476] [2024-11-24 00:44:37,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012988476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895987293] [2024-11-24 00:44:37,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:37,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:37,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:37,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:37,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:44:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:37,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:44:37,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-24 00:44:37,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:44:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895987293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:37,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:44:37,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:44:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264256913] [2024-11-24 00:44:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:37,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:44:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:37,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:44:37,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:44:37,691 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 00:44:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:37,719 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2024-11-24 00:44:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:44:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 66 [2024-11-24 00:44:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:37,730 INFO L225 Difference]: With dead ends: 67 [2024-11-24 00:44:37,730 INFO L226 Difference]: Without dead ends: 33 [2024-11-24 00:44:37,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:44:37,739 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:37,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-24 00:44:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-24 00:44:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 00:44:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2024-11-24 00:44:37,795 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 66 [2024-11-24 00:44:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:37,796 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2024-11-24 00:44:37,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 00:44:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2024-11-24 00:44:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:44:37,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:37,800 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:37,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:44:38,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:44:38,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:38,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash 409964679, now seen corresponding path program 1 times [2024-11-24 00:44:38,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:38,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479751079] [2024-11-24 00:44:38,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:38,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 00:44:39,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479751079] [2024-11-24 00:44:39,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479751079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:39,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:39,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:44:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783392428] [2024-11-24 00:44:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:39,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:44:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:39,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:44:39,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:44:39,177 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:39,421 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2024-11-24 00:44:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:44:39,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66 [2024-11-24 00:44:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:39,425 INFO L225 Difference]: With dead ends: 77 [2024-11-24 00:44:39,426 INFO L226 Difference]: Without dead ends: 75 [2024-11-24 00:44:39,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:44:39,428 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 63 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:39,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 269 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-24 00:44:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2024-11-24 00:44:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 00:44:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-24 00:44:39,462 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 66 [2024-11-24 00:44:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:39,463 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-24 00:44:39,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2024-11-24 00:44:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:44:39,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:39,467 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:39,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:44:39,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:39,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash -411557169, now seen corresponding path program 1 times [2024-11-24 00:44:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:39,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300324931] [2024-11-24 00:44:39,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:39,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 00:44:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300324931] [2024-11-24 00:44:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300324931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:40,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:44:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749850908] [2024-11-24 00:44:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:40,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:44:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:40,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:44:40,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:44:40,736 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:41,357 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2024-11-24 00:44:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:44:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2024-11-24 00:44:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:41,361 INFO L225 Difference]: With dead ends: 94 [2024-11-24 00:44:41,362 INFO L226 Difference]: Without dead ends: 92 [2024-11-24 00:44:41,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:44:41,365 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 79 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:41,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 247 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:44:41,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-24 00:44:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 53. [2024-11-24 00:44:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 38 states have internal predecessors, (40), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-24 00:44:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-24 00:44:41,409 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 67 [2024-11-24 00:44:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:41,414 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-24 00:44:41,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-24 00:44:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:44:41,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:41,416 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:41,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:44:41,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:41,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -409710127, now seen corresponding path program 1 times [2024-11-24 00:44:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901363182] [2024-11-24 00:44:41,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:44:41,479 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:44:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:44:41,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:44:41,582 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:44:41,583 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 00:44:41,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:44:41,591 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-24 00:44:41,672 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:44:41,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:44:41 BoogieIcfgContainer [2024-11-24 00:44:41,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:44:41,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:44:41,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:44:41,678 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:44:41,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:37" (3/4) ... [2024-11-24 00:44:41,683 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 00:44:41,684 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:44:41,686 INFO L158 Benchmark]: Toolchain (without parser) took 5518.83ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 118.2MB in the beginning and 270.3MB in the end (delta: -152.1MB). Peak memory consumption was 130.5MB. Max. memory is 16.1GB. [2024-11-24 00:44:41,686 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:44:41,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.22ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 106.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:41,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.85ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 105.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:44:41,688 INFO L158 Benchmark]: Boogie Preprocessor took 51.98ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 103.5MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:41,689 INFO L158 Benchmark]: RCFGBuilder took 455.74ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 91.4MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:41,690 INFO L158 Benchmark]: TraceAbstraction took 4615.49ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 90.7MB in the beginning and 270.4MB in the end (delta: -179.7MB). Peak memory consumption was 105.3MB. Max. memory is 16.1GB. [2024-11-24 00:44:41,690 INFO L158 Benchmark]: Witness Printer took 6.36ms. Allocated memory is still 427.8MB. Free memory was 270.4MB in the beginning and 270.3MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:44:41,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.22ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 106.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.85ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 105.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.98ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 103.5MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 455.74ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 91.4MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4615.49ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 90.7MB in the beginning and 270.4MB in the end (delta: -179.7MB). Peak memory consumption was 105.3MB. Max. memory is 16.1GB. * Witness Printer took 6.36ms. Allocated memory is still 427.8MB. Free memory was 270.4MB in the beginning and 270.3MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryFLOATComparisonOperation at line 42, overapproximation of someBinaryFLOATComparisonOperation at line 61. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 4; [L23] float var_1_4 = 200.75; [L24] float var_1_5 = 5.7; [L25] signed short int var_1_6 = 200; [L26] signed short int var_1_7 = 256; [L27] signed short int var_1_8 = -16; [L28] unsigned char var_1_9 = 1; [L29] unsigned char var_1_10 = 0; VAL [isInitial=0, var_1_10=0, var_1_1=4, var_1_4=803/4, var_1_5=57/10, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L65] isInitial = 1 [L66] FCALL initially() [L68] FCALL updateLastVariables() [L69] CALL updateVariables() [L41] var_1_4 = __VERIFIER_nondet_float() [L42] CALL assume_abort_if_not((var_1_4 >= -922337.2036854776000e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_5=57/10, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_5=57/10, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L42] RET assume_abort_if_not((var_1_4 >= -922337.2036854776000e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_5=57/10, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L43] var_1_5 = __VERIFIER_nondet_float() [L44] CALL assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L44] RET assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=200, var_1_7=256, var_1_8=-16, var_1_9=1] [L45] var_1_6 = __VERIFIER_nondet_short() [L46] CALL assume_abort_if_not(var_1_6 >= -8192) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=256, var_1_8=-16, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=256, var_1_8=-16, var_1_9=1] [L46] RET assume_abort_if_not(var_1_6 >= -8192) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=256, var_1_8=-16, var_1_9=1] [L47] CALL assume_abort_if_not(var_1_6 <= 8192) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=256, var_1_8=-16, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=256, var_1_8=-16, var_1_9=1] [L47] RET assume_abort_if_not(var_1_6 <= 8192) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=256, var_1_8=-16, var_1_9=1] [L48] var_1_7 = __VERIFIER_nondet_short() [L49] CALL assume_abort_if_not(var_1_7 >= -8191) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16, var_1_9=1] [L49] RET assume_abort_if_not(var_1_7 >= -8191) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16, var_1_9=1] [L50] CALL assume_abort_if_not(var_1_7 <= 8191) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16, var_1_9=1] [L50] RET assume_abort_if_not(var_1_7 <= 8191) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16, var_1_9=1] [L51] var_1_8 = __VERIFIER_nondet_short() [L52] CALL assume_abort_if_not(var_1_8 >= -16383) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L52] RET assume_abort_if_not(var_1_8 >= -16383) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L53] CALL assume_abort_if_not(var_1_8 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L53] RET assume_abort_if_not(var_1_8 <= 16383) VAL [isInitial=1, var_1_10=0, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L54] var_1_10 = __VERIFIER_nondet_uchar() [L55] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L55] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L56] CALL assume_abort_if_not(var_1_10 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L56] RET assume_abort_if_not(var_1_10 <= 0) VAL [isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=1] [L69] RET updateVariables() [L70] CALL step() [L33] var_1_9 = var_1_10 VAL [isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=-256] [L34] COND TRUE ! (var_1_9 && var_1_9) VAL [isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=-256] [L35] COND FALSE !(var_1_4 <= var_1_5) VAL [isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=-256] [L70] RET step() [L71] CALL, EXPR property() [L61-L62] return ((! (var_1_9 && var_1_9)) ? ((var_1_4 <= var_1_5) ? (var_1_1 == ((signed short int) ((((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) + var_1_7) + var_1_8))) : 1) : 1) && (var_1_9 == ((unsigned char) var_1_10)) ; VAL [\result=0, isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=-256] [L71] RET, EXPR property() [L71] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=-256] [L19] reach_error() VAL [isInitial=1, var_1_10=-256, var_1_1=4, var_1_6=1, var_1_7=-8191, var_1_8=-16383, var_1_9=-256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 142 mSDsluCounter, 560 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 383 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 177 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 3 MinimizatonAttempts, 60 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 332 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 702/720 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-24 00:44:41,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC --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 85b1d2ec59250ca50e4af3cfea516d1a969ce9b16ea60a43749666e7f67d56c7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:44:44,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:44:44,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 00:44:44,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:44:44,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:44:44,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:44:44,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:44:44,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:44:44,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:44:44,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:44:44,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:44:44,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:44:44,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:44:44,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:44:44,841 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:44:44,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:44:44,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:44:44,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:44:44,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:44:44,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:44:44,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:44:44,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:44:44,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:44:44,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:44:44,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:44:44,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:44,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:44,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:44,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:44,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:44,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:44:44,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:44:44,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:44:44,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:44:44,846 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_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC 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 -> 85b1d2ec59250ca50e4af3cfea516d1a969ce9b16ea60a43749666e7f67d56c7 [2024-11-24 00:44:45,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:44:45,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:44:45,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:44:45,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:44:45,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:44:45,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i [2024-11-24 00:44:48,258 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/d37c349a8/83496973c4d64b0ea8baf102bd5605b2/FLAGd088d788c [2024-11-24 00:44:48,615 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:44:48,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i [2024-11-24 00:44:48,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/d37c349a8/83496973c4d64b0ea8baf102bd5605b2/FLAGd088d788c [2024-11-24 00:44:48,666 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/data/d37c349a8/83496973c4d64b0ea8baf102bd5605b2 [2024-11-24 00:44:48,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:44:48,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:44:48,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:48,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:44:48,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:44:48,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:48" (1/1) ... [2024-11-24 00:44:48,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c60193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:48, skipping insertion in model container [2024-11-24 00:44:48,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:48" (1/1) ... [2024-11-24 00:44:48,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:44:48,922 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_4395a65e-b179-4f51-ab82-e8717ab187b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i[915,928] [2024-11-24 00:44:48,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:49,007 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:44:49,023 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_4395a65e-b179-4f51-ab82-e8717ab187b5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-80.i[915,928] [2024-11-24 00:44:49,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:49,081 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:44:49,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49 WrapperNode [2024-11-24 00:44:49,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:49,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:49,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:44:49,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:44:49,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,125 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2024-11-24 00:44:49,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:49,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:44:49,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:44:49,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:44:49,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,167 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:44:49,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,178 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:44:49,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:44:49,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:44:49,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:44:49,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (1/1) ... [2024-11-24 00:44:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:49,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:49,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:44:49,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:44:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:44:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 00:44:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:44:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:44:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:44:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:44:49,357 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:44:49,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:44:49,653 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-24 00:44:49,655 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:44:49,672 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:44:49,673 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:44:49,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:49 BoogieIcfgContainer [2024-11-24 00:44:49,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:44:49,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:44:49,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:44:49,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:44:49,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:44:48" (1/3) ... [2024-11-24 00:44:49,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e734b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:49, skipping insertion in model container [2024-11-24 00:44:49,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:49" (2/3) ... [2024-11-24 00:44:49,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e734b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:49, skipping insertion in model container [2024-11-24 00:44:49,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:49" (3/3) ... [2024-11-24 00:44:49,691 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-80.i [2024-11-24 00:44:49,711 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:44:49,712 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount10_file-80.i that has 2 procedures, 37 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:44:49,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:44:49,801 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;@5016f9b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:44:49,801 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:44:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 00:44:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:44:49,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:49,817 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:49,818 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:49,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 211231747, now seen corresponding path program 1 times [2024-11-24 00:44:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:44:49,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305692674] [2024-11-24 00:44:49,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:49,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:44:49,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:44:49,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-24 00:44:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:50,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:44:50,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-24 00:44:50,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:44:50,125 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:44:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305692674] [2024-11-24 00:44:50,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305692674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:50,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:50,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:44:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997514990] [2024-11-24 00:44:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:50,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:44:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:44:50,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:44:50,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:44:50,159 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:50,185 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2024-11-24 00:44:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:44:50,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66 [2024-11-24 00:44:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:50,195 INFO L225 Difference]: With dead ends: 67 [2024-11-24 00:44:50,195 INFO L226 Difference]: Without dead ends: 33 [2024-11-24 00:44:50,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:44:50,219 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:50,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-24 00:44:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-24 00:44:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 00:44:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2024-11-24 00:44:50,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 66 [2024-11-24 00:44:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:50,280 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2024-11-24 00:44:50,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2024-11-24 00:44:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:44:50,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:50,287 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:50,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-24 00:44:50,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:50,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:50,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash 409964679, now seen corresponding path program 1 times [2024-11-24 00:44:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:44:50,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209498105] [2024-11-24 00:44:50,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:50,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:50,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:44:50,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:44:50,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-24 00:44:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:50,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:44:50,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-24 00:44:50,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:44:50,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:44:50,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209498105] [2024-11-24 00:44:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209498105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:50,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:44:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841116347] [2024-11-24 00:44:50,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:50,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:44:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:44:50,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:44:50,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:44:50,825 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:51,399 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2024-11-24 00:44:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:44:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66 [2024-11-24 00:44:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:51,402 INFO L225 Difference]: With dead ends: 97 [2024-11-24 00:44:51,403 INFO L226 Difference]: Without dead ends: 67 [2024-11-24 00:44:51,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:44:51,405 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 56 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:51,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 121 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:44:51,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-24 00:44:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2024-11-24 00:44:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 00:44:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2024-11-24 00:44:51,422 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 66 [2024-11-24 00:44:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:51,423 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2024-11-24 00:44:51,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-24 00:44:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:44:51,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:51,425 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:51,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-24 00:44:51,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:51,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:51,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash -411557169, now seen corresponding path program 1 times [2024-11-24 00:44:51,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:44:51,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059378913] [2024-11-24 00:44:51,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:51,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:51,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:44:51,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:44:51,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-24 00:44:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:51,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:44:51,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 124 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 00:44:54,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:44:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 00:44:54,927 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:44:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059378913] [2024-11-24 00:44:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059378913] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:44:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2024-11-24 00:44:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797286213] [2024-11-24 00:44:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:54,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:44:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:44:54,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:44:54,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:44:54,930 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:55,329 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-11-24 00:44:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:44:55,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2024-11-24 00:44:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:55,331 INFO L225 Difference]: With dead ends: 72 [2024-11-24 00:44:55,331 INFO L226 Difference]: Without dead ends: 70 [2024-11-24 00:44:55,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:44:55,333 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 47 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:55,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 254 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:44:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-24 00:44:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2024-11-24 00:44:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-24 00:44:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-24 00:44:55,352 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 67 [2024-11-24 00:44:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:55,352 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-24 00:44:55,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-24 00:44:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:44:55,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:55,354 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:55,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:44:55,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:55,557 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:55,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -409710127, now seen corresponding path program 1 times [2024-11-24 00:44:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:44:55,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045102947] [2024-11-24 00:44:55,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:55,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:55,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:44:55,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:44:55,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-24 00:44:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:55,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:44:55,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 00:44:56,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:44:56,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:44:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045102947] [2024-11-24 00:44:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045102947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:56,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:56,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:44:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768408720] [2024-11-24 00:44:56,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:56,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:44:56,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:44:56,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:44:56,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:44:56,069 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:56,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:56,338 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2024-11-24 00:44:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:44:56,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2024-11-24 00:44:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:56,340 INFO L225 Difference]: With dead ends: 69 [2024-11-24 00:44:56,340 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 00:44:56,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:44:56,341 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 35 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:56,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 238 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:44:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 00:44:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 00:44:56,342 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) [2024-11-24 00:44:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 00:44:56,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2024-11-24 00:44:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:56,343 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:44:56,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 00:44:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 00:44:56,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 00:44:56,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 00:44:56,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-24 00:44:56,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:44:56,550 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-24 00:44:56,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-24 00:44:56,731 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:44:56,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:44:56 BoogieIcfgContainer [2024-11-24 00:44:56,742 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:44:56,742 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:44:56,743 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:44:56,743 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:44:56,744 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:49" (3/4) ... [2024-11-24 00:44:56,746 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 00:44:56,751 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-24 00:44:56,755 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-24 00:44:56,755 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-24 00:44:56,755 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 00:44:56,756 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-24 00:44:56,847 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:44:56,849 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:44:56,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:44:56,850 INFO L158 Benchmark]: Toolchain (without parser) took 8178.28ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 91.8MB in the beginning and 123.2MB in the end (delta: -31.4MB). Peak memory consumption was 114.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:56,851 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:44:56,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.85ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 79.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:56,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.87ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:56,855 INFO L158 Benchmark]: Boogie Preprocessor took 70.83ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 76.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:44:56,855 INFO L158 Benchmark]: RCFGBuilder took 477.88ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 63.7MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:44:56,855 INFO L158 Benchmark]: TraceAbstraction took 7063.24ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 63.2MB in the beginning and 128.6MB in the end (delta: -65.4MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. [2024-11-24 00:44:56,856 INFO L158 Benchmark]: Witness Printer took 106.76ms. Allocated memory is still 268.4MB. Free memory was 128.6MB in the beginning and 123.2MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:44:56,858 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.85ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 79.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.87ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.83ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 76.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 477.88ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 63.7MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7063.24ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 63.2MB in the beginning and 128.6MB in the end (delta: -65.4MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. * Witness Printer took 106.76ms. Allocated memory is still 268.4MB. Free memory was 128.6MB in the beginning and 123.2MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. * 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: 19]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 657 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 432 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 249 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 225 mSDtfsCounter, 249 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 50 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 21 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 876/900 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (var_1_10 <= 0) RESULT: Ultimate proved your program to be correct! [2024-11-24 00:44:56,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4395a65e-b179-4f51-ab82-e8717ab187b5/bin/uautomizer-verify-LYvppIcaGC/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