./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 547b567eda4620e4c8c29434fcef214bc59c1f17aa6e193bf49598d57812d4ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:21:42,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:21:42,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:21:42,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:21:42,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:21:42,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:21:42,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:21:42,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:21:42,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:21:42,470 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:21:42,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:21:42,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:21:42,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:21:42,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:21:42,473 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:21:42,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:21:42,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:21:42,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:21:42,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:21:42,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:21:42,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:21:42,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:21:42,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:21:42,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:21:42,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:21:42,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:21:42,475 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:21:42,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:21:42,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:21:42,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:42,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:42,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:42,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:42,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:42,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:21:42,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:21:42,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:21:42,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:21:42,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:21:42,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:21:42,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:21:42,478 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_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 547b567eda4620e4c8c29434fcef214bc59c1f17aa6e193bf49598d57812d4ad [2024-11-27 20:21:42,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:21:42,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:21:42,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:21:42,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:21:42,859 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:21:42,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i [2024-11-27 20:21:45,976 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/d59e7264d/bbbbc9bc41c9445daa0e1ff9830cfe18/FLAG9e1a23a78 [2024-11-27 20:21:46,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:21:46,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i [2024-11-27 20:21:46,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/d59e7264d/bbbbc9bc41c9445daa0e1ff9830cfe18/FLAG9e1a23a78 [2024-11-27 20:21:46,417 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/d59e7264d/bbbbc9bc41c9445daa0e1ff9830cfe18 [2024-11-27 20:21:46,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:21:46,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:21:46,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:46,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:21:46,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:21:46,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea012c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46, skipping insertion in model container [2024-11-27 20:21:46,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:21:46,674 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_db61c834-4955-4c33-888d-19e2f9b26094/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i[915,928] [2024-11-27 20:21:46,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:46,760 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:21:46,772 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_db61c834-4955-4c33-888d-19e2f9b26094/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i[915,928] [2024-11-27 20:21:46,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:46,834 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:21:46,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46 WrapperNode [2024-11-27 20:21:46,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:46,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:46,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:21:46,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:21:46,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,912 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2024-11-27 20:21:46,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:46,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:21:46,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:21:46,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:21:46,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,942 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]. [2024-11-27 20:21:46,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,948 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:21:46,959 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:21:46,959 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:21:46,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:21:46,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (1/1) ... [2024-11-27 20:21:46,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:47,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:21:47,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:21:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:21:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:21:47,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:21:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:21:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:21:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:21:47,126 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:21:47,130 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:21:47,497 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-27 20:21:47,497 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:21:47,512 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:21:47,513 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:21:47,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:47 BoogieIcfgContainer [2024-11-27 20:21:47,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:21:47,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:21:47,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:21:47,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:21:47,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:21:46" (1/3) ... [2024-11-27 20:21:47,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fb18f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:47, skipping insertion in model container [2024-11-27 20:21:47,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:46" (2/3) ... [2024-11-27 20:21:47,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fb18f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:47, skipping insertion in model container [2024-11-27 20:21:47,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:47" (3/3) ... [2024-11-27 20:21:47,529 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-46.i [2024-11-27 20:21:47,547 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:21:47,548 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-46.i that has 2 procedures, 43 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:21:47,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:21:47,630 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;@28f72558, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:21:47,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:21:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-11-27 20:21:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:21:47,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:47,648 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, 1, 1] [2024-11-27 20:21:47,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:47,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1832989103, now seen corresponding path program 1 times [2024-11-27 20:21:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602435633] [2024-11-27 20:21:47,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 20:21:47,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602435633] [2024-11-27 20:21:47,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602435633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312702046] [2024-11-27 20:21:47,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:47,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:47,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:47,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:21:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:48,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:21:48,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 20:21:48,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312702046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:48,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:21:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635236459] [2024-11-27 20:21:48,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:48,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:21:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:48,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:21:48,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:21:48,209 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-27 20:21:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:48,237 INFO L93 Difference]: Finished difference Result 79 states and 128 transitions. [2024-11-27 20:21:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:21:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 69 [2024-11-27 20:21:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:48,246 INFO L225 Difference]: With dead ends: 79 [2024-11-27 20:21:48,247 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 20:21:48,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:21:48,253 INFO L435 NwaCegarLoop]: 55 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, 55 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 [2024-11-27 20:21:48,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 20:21:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-27 20:21:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 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) [2024-11-27 20:21:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2024-11-27 20:21:48,289 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 69 [2024-11-27 20:21:48,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:48,290 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2024-11-27 20:21:48,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-27 20:21:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2024-11-27 20:21:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:21:48,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:48,292 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, 1, 1] [2024-11-27 20:21:48,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:21:48,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:48,493 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:48,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -462961843, now seen corresponding path program 1 times [2024-11-27 20:21:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:48,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448250068] [2024-11-27 20:21:48,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:21:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551135304] [2024-11-27 20:21:48,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:48,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:48,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:21:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:21:48,852 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:21:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:21:48,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:21:48,932 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:21:48,933 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:21:48,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:21:49,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:49,139 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 20:21:49,182 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:21:49,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:21:49 BoogieIcfgContainer [2024-11-27 20:21:49,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:21:49,189 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:21:49,189 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:21:49,189 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:21:49,190 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:47" (3/4) ... [2024-11-27 20:21:49,193 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 20:21:49,194 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:21:49,195 INFO L158 Benchmark]: Toolchain (without parser) took 2771.79ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 86.1MB in the end (delta: 16.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-11-27 20:21:49,195 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:49,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.32ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 89.8MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:21:49,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.17ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 87.7MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:21:49,197 INFO L158 Benchmark]: Boogie Preprocessor took 44.76ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:49,200 INFO L158 Benchmark]: RCFGBuilder took 554.86ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 69.8MB in the end (delta: 15.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:21:49,201 INFO L158 Benchmark]: TraceAbstraction took 1671.51ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 86.2MB in the end (delta: -17.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:49,201 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 142.6MB. Free memory was 86.2MB in the beginning and 86.1MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:49,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.32ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 89.8MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.17ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 87.7MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.76ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 554.86ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 69.8MB in the end (delta: 15.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1671.51ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 86.2MB in the end (delta: -17.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 142.6MB. Free memory was 86.2MB in the beginning and 86.1MB in the end (delta: 36.9kB). 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 someBinaryDOUBLEComparisonOperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 88, overapproximation of someBinaryDOUBLEComparisonOperation at line 69. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] double var_1_2 = 31.75; [L24] signed char var_1_4 = -8; [L25] unsigned char var_1_6 = 0; [L26] unsigned char var_1_7 = 1; [L27] unsigned char var_1_8 = 16; [L28] unsigned char var_1_9 = 8; [L29] signed long int var_1_10 = 256; [L30] signed long int last_1_var_1_10 = 256; VAL [isInitial=0, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_2=127/4, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L92] isInitial = 1 [L93] FCALL initially() [L95] CALL updateLastVariables() [L85] last_1_var_1_10 = var_1_10 VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_2=127/4, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L95] RET updateLastVariables() [L96] CALL updateVariables() [L68] var_1_2 = __VERIFIER_nondet_double() [L69] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L69] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L70] var_1_4 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_4 >= -128) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L71] RET assume_abort_if_not(var_1_4 >= -128) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L72] CALL assume_abort_if_not(var_1_4 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L72] RET assume_abort_if_not(var_1_4 <= 127) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L73] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L73] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L74] var_1_6 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_7=1, var_1_8=16, var_1_9=8] [L75] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_7=1, var_1_8=16, var_1_9=8] [L76] CALL assume_abort_if_not(var_1_6 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L76] RET assume_abort_if_not(var_1_6 <= 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L77] var_1_7 = __VERIFIER_nondet_uchar() [L78] CALL assume_abort_if_not(var_1_7 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L78] RET assume_abort_if_not(var_1_7 >= 1) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L79] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L79] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L80] var_1_9 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16] [L81] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16] [L82] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=2] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=2] [L82] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=2] [L96] RET updateVariables() [L97] CALL step() [L34] signed char stepLocal_3 = var_1_4; [L35] unsigned char stepLocal_2 = var_1_7; VAL [isInitial=1, last_1_var_1_10=256, stepLocal_2=1, stepLocal_3=-2, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=2] [L36] COND TRUE 2 != stepLocal_3 [L37] var_1_8 = var_1_9 VAL [isInitial=1, last_1_var_1_10=256, stepLocal_2=1, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L45] signed long int stepLocal_1 = var_1_8 / var_1_4; [L46] signed long int stepLocal_0 = (((var_1_4) < (var_1_8)) ? (var_1_4) : (var_1_8)); VAL [isInitial=1, last_1_var_1_10=256, stepLocal_0=-2, stepLocal_1=-1, stepLocal_2=1, var_1_10=256, var_1_1=1, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L47] COND FALSE !((- var_1_2) >= 16.75) [L58] var_1_1 = var_1_6 VAL [isInitial=1, last_1_var_1_10=256, stepLocal_0=-2, stepLocal_1=-1, stepLocal_2=1, var_1_10=256, var_1_1=0, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L60] signed long int stepLocal_4 = var_1_8 * var_1_8; VAL [isInitial=1, last_1_var_1_10=256, stepLocal_0=-2, stepLocal_1=-1, stepLocal_2=1, stepLocal_4=4, var_1_10=256, var_1_1=0, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L61] COND FALSE !(0 > stepLocal_4) VAL [isInitial=1, last_1_var_1_10=256, stepLocal_0=-2, stepLocal_1=-1, stepLocal_2=1, var_1_10=256, var_1_1=0, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L97] RET step() [L98] CALL, EXPR property() [L88-L89] return ((((- var_1_2) >= 16.75) ? (((var_1_8 / var_1_4) >= var_1_8) ? ((((((var_1_4) < (var_1_8)) ? (var_1_4) : (var_1_8))) > -32) ? (var_1_1 == ((unsigned char) 0)) : (var_1_1 == ((unsigned char) var_1_6))) : (var_1_1 == ((unsigned char) var_1_7))) : (var_1_1 == ((unsigned char) var_1_6))) && ((2 != var_1_4) ? (var_1_8 == ((unsigned char) var_1_9)) : (((var_1_9 <= last_1_var_1_10) && var_1_7) ? (var_1_8 == ((unsigned char) 128)) : (var_1_8 == ((unsigned char) var_1_9))))) && ((0 > (var_1_8 * var_1_8)) ? (var_1_1 ? (var_1_10 == ((signed long int) 5)) : 1) : 1) ; VAL [\result=0, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=0, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L98] RET, EXPR property() [L98] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=0, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] [L19] reach_error() VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=0, var_1_4=-2, var_1_6=0, var_1_7=1, var_1_8=2, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 55 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 342/360 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 [2024-11-27 20:21:49,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 547b567eda4620e4c8c29434fcef214bc59c1f17aa6e193bf49598d57812d4ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:21:52,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:21:52,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-27 20:21:52,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:21:52,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:21:52,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:21:52,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:21:52,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:21:52,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:21:52,305 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:21:52,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:21:52,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:21:52,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:21:52,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:21:52,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:21:52,308 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:52,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:52,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:52,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 20:21:52,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:21:52,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:21:52,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:21:52,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:21:52,312 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_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 547b567eda4620e4c8c29434fcef214bc59c1f17aa6e193bf49598d57812d4ad [2024-11-27 20:21:52,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:21:52,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:21:52,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:21:52,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:21:52,665 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:21:52,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i [2024-11-27 20:21:55,738 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/9e088cafd/7a539124b42146bca73973f8124b8dde/FLAG5ee991e12 [2024-11-27 20:21:56,027 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:21:56,028 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i [2024-11-27 20:21:56,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/9e088cafd/7a539124b42146bca73973f8124b8dde/FLAG5ee991e12 [2024-11-27 20:21:56,063 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/data/9e088cafd/7a539124b42146bca73973f8124b8dde [2024-11-27 20:21:56,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:21:56,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:21:56,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:56,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:21:56,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:21:56,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f21126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56, skipping insertion in model container [2024-11-27 20:21:56,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:21:56,269 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_db61c834-4955-4c33-888d-19e2f9b26094/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i[915,928] [2024-11-27 20:21:56,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:56,352 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:21:56,368 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_db61c834-4955-4c33-888d-19e2f9b26094/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-46.i[915,928] [2024-11-27 20:21:56,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:56,416 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:21:56,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56 WrapperNode [2024-11-27 20:21:56,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:56,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:56,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:21:56,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:21:56,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,470 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2024-11-27 20:21:56,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:56,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:21:56,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:21:56,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:21:56,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,502 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]. [2024-11-27 20:21:56,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,509 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:21:56,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:21:56,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:21:56,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:21:56,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (1/1) ... [2024-11-27 20:21:56,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:56,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:21:56,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:21:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:21:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 20:21:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:21:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:21:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:21:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:21:56,722 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:21:56,724 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:21:57,237 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-27 20:21:57,237 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:21:57,264 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:21:57,264 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:21:57,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:57 BoogieIcfgContainer [2024-11-27 20:21:57,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:21:57,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:21:57,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:21:57,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:21:57,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:21:56" (1/3) ... [2024-11-27 20:21:57,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad3160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:57, skipping insertion in model container [2024-11-27 20:21:57,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:56" (2/3) ... [2024-11-27 20:21:57,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad3160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:57, skipping insertion in model container [2024-11-27 20:21:57,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:57" (3/3) ... [2024-11-27 20:21:57,276 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-46.i [2024-11-27 20:21:57,293 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:21:57,295 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-46.i that has 2 procedures, 43 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:21:57,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:21:57,367 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;@752622cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:21:57,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:21:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-11-27 20:21:57,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:21:57,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:57,384 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, 1, 1] [2024-11-27 20:21:57,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:57,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1832989103, now seen corresponding path program 1 times [2024-11-27 20:21:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:21:57,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864788157] [2024-11-27 20:21:57,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:57,410 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 [2024-11-27 20:21:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:21:57,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:21:57,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:21:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:57,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:21:57,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 20:21:57,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:57,672 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:21:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864788157] [2024-11-27 20:21:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864788157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:57,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:57,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:21:57,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751306484] [2024-11-27 20:21:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:57,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:21:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:21:57,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:21:57,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:21:57,716 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-27 20:21:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:57,754 INFO L93 Difference]: Finished difference Result 79 states and 128 transitions. [2024-11-27 20:21:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:21:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 69 [2024-11-27 20:21:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:57,767 INFO L225 Difference]: With dead ends: 79 [2024-11-27 20:21:57,767 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 20:21:57,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:21:57,778 INFO L435 NwaCegarLoop]: 55 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, 55 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 [2024-11-27 20:21:57,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 20:21:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-27 20:21:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 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) [2024-11-27 20:21:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2024-11-27 20:21:57,843 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 69 [2024-11-27 20:21:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:57,845 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2024-11-27 20:21:57,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-27 20:21:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2024-11-27 20:21:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:21:57,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:57,851 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, 1, 1] [2024-11-27 20:21:57,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:21:58,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:21:58,056 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:58,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:58,058 INFO L85 PathProgramCache]: Analyzing trace with hash -462961843, now seen corresponding path program 1 times [2024-11-27 20:21:58,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:21:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798383503] [2024-11-27 20:21:58,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:58,061 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 [2024-11-27 20:21:58,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:21:58,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:21:58,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:21:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:58,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:21:58,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:23:08,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:08,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:23:08,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798383503] [2024-11-27 20:23:08,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798383503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:08,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:08,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:23:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400961963] [2024-11-27 20:23:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:08,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:23:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:23:08,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:23:08,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:23:08,807 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-27 20:23:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:09,361 INFO L93 Difference]: Finished difference Result 71 states and 94 transitions. [2024-11-27 20:23:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:23:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 69 [2024-11-27 20:23:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:09,364 INFO L225 Difference]: With dead ends: 71 [2024-11-27 20:23:09,364 INFO L226 Difference]: Without dead ends: 69 [2024-11-27 20:23:09,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:23:09,366 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 32 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:09,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 264 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:23:09,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-27 20:23:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-27 20:23:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 50 states have internal predecessors, (65), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:23:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2024-11-27 20:23:09,379 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 69 [2024-11-27 20:23:09,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:09,379 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2024-11-27 20:23:09,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-27 20:23:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2024-11-27 20:23:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 20:23:09,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:09,382 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, 1, 1, 1] [2024-11-27 20:23:09,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:09,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:23:09,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:09,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -555837416, now seen corresponding path program 1 times [2024-11-27 20:23:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:23:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68048749] [2024-11-27 20:23:09,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:09,584 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 [2024-11-27 20:23:09,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:23:09,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:23:09,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:23:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:09,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:23:09,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:23:43,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:43,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:23:43,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68048749] [2024-11-27 20:23:43,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68048749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:43,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:43,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:23:43,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865348958] [2024-11-27 20:23:43,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:43,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:23:43,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:23:43,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:23:43,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:23:43,863 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-27 20:23:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:46,676 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2024-11-27 20:23:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:23:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 70 [2024-11-27 20:23:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:46,678 INFO L225 Difference]: With dead ends: 77 [2024-11-27 20:23:46,678 INFO L226 Difference]: Without dead ends: 75 [2024-11-27 20:23:46,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:46,680 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 42 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:46,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 365 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 20:23:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-27 20:23:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2024-11-27 20:23:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 50 states have internal predecessors, (65), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:23:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2024-11-27 20:23:46,693 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 70 [2024-11-27 20:23:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:46,694 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2024-11-27 20:23:46,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-27 20:23:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2024-11-27 20:23:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 20:23:46,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:46,697 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, 1, 1, 1] [2024-11-27 20:23:46,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-27 20:23:46,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:23:46,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:46,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -579933832, now seen corresponding path program 1 times [2024-11-27 20:23:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:23:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946764320] [2024-11-27 20:23:46,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:46,900 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 [2024-11-27 20:23:46,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:23:46,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:23:46,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:23:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:47,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:23:47,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 93 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 20:23:50,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:07,649 WARN L286 SmtUtils]: Spent 20.15s on a formula simplification. DAG size of input: 252 DAG size of output: 245 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:27:02,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:27:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946764320] [2024-11-27 20:27:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946764320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1500952941] [2024-11-27 20:27:02,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:02,823 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:27:02,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:27:02,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:27:02,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-27 20:27:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:03,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:27:03,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:27:06,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:27:06,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1500952941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:06,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:27:06,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2024-11-27 20:27:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444264161] [2024-11-27 20:27:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:06,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:27:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:27:06,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:27:06,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:27:06,914 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2024-11-27 20:27:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:07,508 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-27 20:27:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:27:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 70 [2024-11-27 20:27:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:07,511 INFO L225 Difference]: With dead ends: 87 [2024-11-27 20:27:07,511 INFO L226 Difference]: Without dead ends: 85 [2024-11-27 20:27:07,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:27:07,513 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 30 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:07,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 313 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:27:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-27 20:27:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2024-11-27 20:27:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 58 states have internal predecessors, (76), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:27:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2024-11-27 20:27:07,523 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 70 [2024-11-27 20:27:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:07,523 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2024-11-27 20:27:07,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2024-11-27 20:27:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2024-11-27 20:27:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 20:27:07,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:07,526 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, 1, 1, 1] [2024-11-27 20:27:07,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:27:07,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:27:07,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:27:07,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 100124538, now seen corresponding path program 1 times [2024-11-27 20:27:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:27:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491964192] [2024-11-27 20:27:07,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:07,928 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 [2024-11-27 20:27:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:27:07,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:27:07,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (7)] Waiting until timeout for monitored process [2024-11-27 20:27:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:08,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:27:08,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 98 proven. 12 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 20:27:08,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:08,641 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:27:08,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491964192] [2024-11-27 20:27:08,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491964192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:08,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [493394737] [2024-11-27 20:27:08,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:08,642 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:27:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:27:08,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:27:08,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-27 20:27:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:08,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:27:08,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:27:14,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:27:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [493394737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:14,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:27:14,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-27 20:27:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782088944] [2024-11-27 20:27:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:14,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:27:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:27:14,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:27:14,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:27:14,514 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-27 20:27:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:15,499 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2024-11-27 20:27:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:27:15,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 70 [2024-11-27 20:27:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:15,502 INFO L225 Difference]: With dead ends: 169 [2024-11-27 20:27:15,502 INFO L226 Difference]: Without dead ends: 167 [2024-11-27 20:27:15,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:27:15,503 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 49 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:15,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 396 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:27:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-27 20:27:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 145. [2024-11-27 20:27:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 120 states have internal predecessors, (162), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 20:27:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 206 transitions. [2024-11-27 20:27:15,540 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 206 transitions. Word has length 70 [2024-11-27 20:27:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:15,541 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 206 transitions. [2024-11-27 20:27:15,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-27 20:27:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 206 transitions. [2024-11-27 20:27:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:27:15,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:15,544 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, 1, 1, 1, 1] [2024-11-27 20:27:15,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (7)] Ended with exit code 0 [2024-11-27 20:27:15,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-27 20:27:15,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:27:15,945 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:15,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1710603870, now seen corresponding path program 1 times [2024-11-27 20:27:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:27:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694749011] [2024-11-27 20:27:15,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:15,946 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 [2024-11-27 20:27:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:27:15,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:27:15,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (9)] Waiting until timeout for monitored process [2024-11-27 20:27:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:16,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:27:16,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-27 20:27:29,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-27 20:29:02,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:29:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694749011] [2024-11-27 20:29:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694749011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:02,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:29:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2024-11-27 20:29:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835629132] [2024-11-27 20:29:02,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:02,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:29:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:29:02,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:29:02,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:29:02,262 INFO L87 Difference]: Start difference. First operand 145 states and 206 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 20:29:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:30,319 INFO L93 Difference]: Finished difference Result 289 states and 380 transitions. [2024-11-27 20:29:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:29:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 71 [2024-11-27 20:29:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:30,329 INFO L225 Difference]: With dead ends: 289 [2024-11-27 20:29:30,330 INFO L226 Difference]: Without dead ends: 221 [2024-11-27 20:29:30,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 20:29:30,332 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 222 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:30,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 405 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-27 20:29:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-27 20:29:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 150. [2024-11-27 20:29:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 121 states have (on average 1.3388429752066116) internal successors, (162), 123 states have internal predecessors, (162), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 20:29:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 206 transitions. [2024-11-27 20:29:30,359 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 206 transitions. Word has length 71 [2024-11-27 20:29:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:30,360 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 206 transitions. [2024-11-27 20:29:30,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 20:29:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 206 transitions. [2024-11-27 20:29:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:29:30,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:30,362 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, 1, 1, 1, 1] [2024-11-27 20:29:30,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (9)] Ended with exit code 0 [2024-11-27 20:29:30,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:29:30,562 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:30,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash 112998221, now seen corresponding path program 1 times [2024-11-27 20:29:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:29:30,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609580504] [2024-11-27 20:29:30,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:30,563 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 [2024-11-27 20:29:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:29:30,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:29:30,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (10)] Waiting until timeout for monitored process [2024-11-27 20:29:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:30,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:29:30,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 123 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 20:29:34,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:31:39,165 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 203 DAG size of output: 201 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:32:36,250 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:32:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609580504] [2024-11-27 20:32:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609580504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1673742297] [2024-11-27 20:32:36,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:36,251 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:32:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:32:36,253 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:32:36,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-27 20:32:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:36,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:32:36,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:32:40,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:32:40,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1673742297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:40,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:32:40,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 22 [2024-11-27 20:32:40,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463396722] [2024-11-27 20:32:40,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:40,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:32:40,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:32:40,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:32:40,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:32:40,512 INFO L87 Difference]: Start difference. First operand 150 states and 206 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-11-27 20:32:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:41,446 INFO L93 Difference]: Finished difference Result 329 states and 451 transitions. [2024-11-27 20:32:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:32:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 71 [2024-11-27 20:32:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:41,449 INFO L225 Difference]: With dead ends: 329 [2024-11-27 20:32:41,449 INFO L226 Difference]: Without dead ends: 182 [2024-11-27 20:32:41,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:32:41,451 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 30 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:41,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 420 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:32:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-27 20:32:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 156. [2024-11-27 20:32:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 127 states have (on average 1.3464566929133859) internal successors, (171), 129 states have internal predecessors, (171), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 20:32:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 215 transitions. [2024-11-27 20:32:41,478 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 215 transitions. Word has length 71 [2024-11-27 20:32:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:41,479 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 215 transitions. [2024-11-27 20:32:41,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-11-27 20:32:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 215 transitions. [2024-11-27 20:32:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:32:41,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:41,481 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, 1, 1, 1, 1] [2024-11-27 20:32:41,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (10)] Ended with exit code 0 [2024-11-27 20:32:41,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-27 20:32:41,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:32:41,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:41,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1426666918, now seen corresponding path program 1 times [2024-11-27 20:32:41,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:32:41,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582703651] [2024-11-27 20:32:41,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:41,883 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 [2024-11-27 20:32:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:32:41,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:32:41,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (12)] Waiting until timeout for monitored process [2024-11-27 20:32:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:41,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:32:41,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 98 proven. 12 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 20:32:42,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:42,676 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:32:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582703651] [2024-11-27 20:32:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582703651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [753006635] [2024-11-27 20:32:42,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:32:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:32:42,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:32:42,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-27 20:32:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:42,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:32:42,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:32:43,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:32:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [753006635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:43,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:32:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2024-11-27 20:32:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526621245] [2024-11-27 20:32:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:43,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:32:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:32:43,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:32:43,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:32:43,096 INFO L87 Difference]: Start difference. First operand 156 states and 215 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-27 20:32:43,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:43,179 INFO L93 Difference]: Finished difference Result 232 states and 318 transitions. [2024-11-27 20:32:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:32:43,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 71 [2024-11-27 20:32:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:43,188 INFO L225 Difference]: With dead ends: 232 [2024-11-27 20:32:43,188 INFO L226 Difference]: Without dead ends: 79 [2024-11-27 20:32:43,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:32:43,190 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:43,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:32:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-27 20:32:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-27 20:32:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 59 states have internal predecessors, (71), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:32:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2024-11-27 20:32:43,204 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 71 [2024-11-27 20:32:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:43,205 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2024-11-27 20:32:43,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-27 20:32:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2024-11-27 20:32:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:32:43,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:43,207 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, 1, 1, 1, 1] [2024-11-27 20:32:43,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:32:43,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-27 20:32:43,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:32:43,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:43,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash -280028789, now seen corresponding path program 1 times [2024-11-27 20:32:43,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:32:43,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559095263] [2024-11-27 20:32:43,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:43,610 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 [2024-11-27 20:32:43,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:32:43,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:32:43,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (14)] Waiting until timeout for monitored process [2024-11-27 20:32:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:43,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:32:43,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 98 proven. 12 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 20:32:44,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:44,423 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:32:44,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559095263] [2024-11-27 20:32:44,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559095263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:44,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [733641297] [2024-11-27 20:32:44,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:44,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:32:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:32:44,426 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:32:44,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-27 20:32:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:44,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:32:44,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 93 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 20:32:45,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:45,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [733641297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:45,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:32:45,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2024-11-27 20:32:45,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730599474] [2024-11-27 20:32:45,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:45,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:32:45,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:32:45,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:32:45,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:32:45,144 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 20:32:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:45,897 INFO L93 Difference]: Finished difference Result 146 states and 180 transitions. [2024-11-27 20:32:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:32:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 71 [2024-11-27 20:32:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:45,906 INFO L225 Difference]: With dead ends: 146 [2024-11-27 20:32:45,906 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 20:32:45,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:32:45,907 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 149 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:45,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 171 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:32:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 20:32:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2024-11-27 20:32:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 56 states have internal predecessors, (63), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-27 20:32:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2024-11-27 20:32:45,925 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 71 [2024-11-27 20:32:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:45,926 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2024-11-27 20:32:45,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 20:32:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2024-11-27 20:32:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 20:32:45,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:45,927 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, 1, 1, 1, 1, 1] [2024-11-27 20:32:45,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (14)] Ended with exit code 0 [2024-11-27 20:32:46,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-27 20:32:46,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:32:46,328 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:46,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:46,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1843431693, now seen corresponding path program 1 times [2024-11-27 20:32:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:32:46,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520164707] [2024-11-27 20:32:46,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:46,329 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 [2024-11-27 20:32:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:32:46,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:32:46,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (16)] Waiting until timeout for monitored process [2024-11-27 20:32:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:46,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:32:46,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 20:32:46,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 20:32:48,138 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:32:48,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520164707] [2024-11-27 20:32:48,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520164707] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:48,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:32:48,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-27 20:32:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633904326] [2024-11-27 20:32:48,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:48,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:32:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:32:48,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:32:48,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:32:48,139 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-27 20:32:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:48,938 INFO L93 Difference]: Finished difference Result 148 states and 172 transitions. [2024-11-27 20:32:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:32:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 72 [2024-11-27 20:32:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:48,944 INFO L225 Difference]: With dead ends: 148 [2024-11-27 20:32:48,944 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:32:48,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:32:48,945 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 44 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:48,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 130 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:32:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:32:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:32:48,946 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) [2024-11-27 20:32:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:32:48,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-11-27 20:32:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:48,946 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:32:48,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-27 20:32:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:32:48,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:32:48,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:32:48,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 (16)] Ended with exit code 0 [2024-11-27 20:32:49,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:32:49,152 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:49,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 20:32:55,319 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:32:55,333 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~stepLocal_3~0 [2024-11-27 20:32:55,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:32:55 BoogieIcfgContainer [2024-11-27 20:32:55,337 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:32:55,338 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:32:55,338 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:32:55,338 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:32:55,339 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:57" (3/4) ... [2024-11-27 20:32:55,342 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:32:55,348 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-27 20:32:55,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-27 20:32:55,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-27 20:32:55,354 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 20:32:55,354 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:32:55,476 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:32:55,477 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:32:55,477 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:32:55,479 INFO L158 Benchmark]: Toolchain (without parser) took 659411.57ms. Allocated memory was 83.9MB in the beginning and 1.8GB in the end (delta: 1.8GB). Free memory was 60.1MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 402.2MB. Max. memory is 16.1GB. [2024-11-27 20:32:55,479 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 83.9MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:32:55,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.79ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 47.1MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:32:55,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.36ms. Allocated memory is still 83.9MB. Free memory was 47.1MB in the beginning and 45.7MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:32:55,481 INFO L158 Benchmark]: Boogie Preprocessor took 45.83ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 43.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:32:55,482 INFO L158 Benchmark]: RCFGBuilder took 743.29ms. Allocated memory is still 83.9MB. Free memory was 43.7MB in the beginning and 59.9MB in the end (delta: -16.1MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2024-11-27 20:32:55,482 INFO L158 Benchmark]: TraceAbstraction took 658070.17ms. Allocated memory was 83.9MB in the beginning and 1.8GB in the end (delta: 1.8GB). Free memory was 59.1MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 391.0MB. Max. memory is 16.1GB. [2024-11-27 20:32:55,482 INFO L158 Benchmark]: Witness Printer took 139.49ms. Allocated memory is still 1.8GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:32:55,486 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 83.9MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.79ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 47.1MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.36ms. Allocated memory is still 83.9MB. Free memory was 47.1MB in the beginning and 45.7MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.83ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 43.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 743.29ms. Allocated memory is still 83.9MB. Free memory was 43.7MB in the beginning and 59.9MB in the end (delta: -16.1MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 658070.17ms. Allocated memory was 83.9MB in the beginning and 1.8GB in the end (delta: 1.8GB). Free memory was 59.1MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 391.0MB. Max. memory is 16.1GB. * Witness Printer took 139.49ms. Allocated memory is still 1.8GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~stepLocal_3~0 * 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, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 651.8s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 603 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 598 mSDsluCounter, 2618 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2066 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1611 IncrementalHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 552 mSDtfsCounter, 1611 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1301 GetRequests, 1123 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 84.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=7, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 161 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 610.0s InterpolantComputationTime, 1057 NumberOfCodeBlocks, 1057 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1183 ConstructedInterpolants, 5 QuantifiedInterpolants, 7798 SizeOfPredicates, 107 NumberOfNonLiveVariables, 1784 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2940/3060 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: 94]: Loop Invariant Derived loop invariant: ((((((((var_1_6 <= 0) && (var_1_7 != 0)) && (0 == ((var_1_8 + -128) % 256))) && (last_1_var_1_10 == 256)) && (var_1_7 <= 1)) && (256 == var_1_10)) && !((var_1_8 / var_1_4) >= var_1_8)) || ((((((var_1_7 >= 1) && (var_1_6 <= 0)) && (last_1_var_1_10 == 256)) && (var_1_7 <= 1)) && (256 == var_1_10)) && (((var_1_9 == var_1_8) && (2 != var_1_4)) || !((var_1_8 / var_1_4) >= var_1_8)))) RESULT: Ultimate proved your program to be correct! [2024-11-27 20:32:55,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db61c834-4955-4c33-888d-19e2f9b26094/bin/uautomizer-verify-aQ6SnzHsRB/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