./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX --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 aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:10:00,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:10:00,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:10:00,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:10:00,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:10:00,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:10:00,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:10:00,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:10:00,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:10:00,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:10:00,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:10:00,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:10:00,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:10:00,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:10:00,468 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:10:00,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:10:00,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:10:00,470 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:10:00,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:10:00,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:10:00,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:10:00,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:10:00,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:10:00,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:10:00,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:10:00,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:10:00,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:10:00,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:10:00,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:10:00,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:10:00,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:10:00,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:10:00,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:10:00,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:10:00,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:10:00,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:10:00,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:10:00,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:10:00,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:10:00,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:10:00,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:10:00,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:10:00,492 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2024-11-08 19:10:00,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:10:00,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:10:00,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:10:00,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:10:00,876 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:10:00,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c Unable to find full path for "g++" [2024-11-08 19:10:03,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:10:03,856 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:10:03,857 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2024-11-08 19:10:03,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data/42b5d5472/9c38fd46d8454411b7aa9389a1d83db3/FLAG63def202c [2024-11-08 19:10:04,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data/42b5d5472/9c38fd46d8454411b7aa9389a1d83db3 [2024-11-08 19:10:04,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:10:04,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:10:04,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:10:04,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:10:04,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:10:04,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524ff0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04, skipping insertion in model container [2024-11-08 19:10:04,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:10:04,560 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2024-11-08 19:10:04,569 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2024-11-08 19:10:04,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:10:04,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:10:04,679 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2024-11-08 19:10:04,681 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2024-11-08 19:10:04,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:10:04,750 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:10:04,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04 WrapperNode [2024-11-08 19:10:04,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:10:04,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:10:04,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:10:04,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:10:04,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,828 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-11-08 19:10:04,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:10:04,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:10:04,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:10:04,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:10:04,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,877 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]. [2024-11-08 19:10:04,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:10:04,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:10:04,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:10:04,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:10:04,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (1/1) ... [2024-11-08 19:10:04,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:10:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:04,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:10:04,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:10:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:10:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-08 19:10:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-08 19:10:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:10:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:10:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:10:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 19:10:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 19:10:05,198 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:10:05,202 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:10:05,890 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-11-08 19:10:05,891 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:10:05,914 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:10:05,914 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 19:10:05,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:05 BoogieIcfgContainer [2024-11-08 19:10:05,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:10:05,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:10:05,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:10:05,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:10:05,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:10:04" (1/3) ... [2024-11-08 19:10:05,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a077805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:10:05, skipping insertion in model container [2024-11-08 19:10:05,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:04" (2/3) ... [2024-11-08 19:10:05,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a077805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:10:05, skipping insertion in model container [2024-11-08 19:10:05,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:05" (3/3) ... [2024-11-08 19:10:05,932 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2024-11-08 19:10:05,959 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:10:05,960 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 19:10:06,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:10:06,061 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;@5de568ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:10:06,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 19:10:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 77 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 19:10:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 19:10:06,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:10:06,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:06,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:10:06,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2024-11-08 19:10:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:06,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8044732] [2024-11-08 19:10:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:10:06,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:10:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:10:06,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:10:06,319 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:10:06,321 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-08 19:10:06,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 19:10:06,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:10:06,332 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 19:10:06,356 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:10:06,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:10:06 BoogieIcfgContainer [2024-11-08 19:10:06,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:10:06,364 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:10:06,366 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:10:06,367 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:10:06,367 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:05" (3/4) ... [2024-11-08 19:10:06,371 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 19:10:06,374 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:10:06,376 INFO L158 Benchmark]: Toolchain (without parser) took 2183.42ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 117.5MB in the end (delta: 6.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-11-08 19:10:06,377 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:10:06,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.53ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 107.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 19:10:06,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.21ms. Allocated memory is still 167.8MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:10:06,380 INFO L158 Benchmark]: Boogie Preprocessor took 71.35ms. Allocated memory is still 167.8MB. Free memory was 105.4MB in the beginning and 103.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:10:06,381 INFO L158 Benchmark]: RCFGBuilder took 1013.44ms. Allocated memory is still 167.8MB. Free memory was 103.3MB in the beginning and 133.0MB in the end (delta: -29.7MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2024-11-08 19:10:06,382 INFO L158 Benchmark]: TraceAbstraction took 445.04ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 117.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 19:10:06,383 INFO L158 Benchmark]: Witness Printer took 9.98ms. Allocated memory is still 167.8MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:10:06,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.53ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 107.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.21ms. Allocated memory is still 167.8MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.35ms. Allocated memory is still 167.8MB. Free memory was 105.4MB in the beginning and 103.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1013.44ms. Allocated memory is still 167.8MB. Free memory was 103.3MB in the beginning and 133.0MB in the end (delta: -29.7MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * TraceAbstraction took 445.04ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 117.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 9.98ms. Allocated memory is still 167.8MB. Free memory is still 117.5MB. 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: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.4f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 19:10:06,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX --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 aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:10:09,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:10:09,640 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 19:10:09,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:10:09,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:10:09,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:10:09,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:10:09,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:10:09,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:10:09,716 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:10:09,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:10:09,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:10:09,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:10:09,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:10:09,723 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:10:09,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:10:09,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:10:09,725 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:10:09,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:10:09,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:10:09,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:10:09,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:10:09,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:10:09,731 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 19:10:09,734 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 19:10:09,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:10:09,735 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 19:10:09,736 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:10:09,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:10:09,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:10:09,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:10:09,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:10:09,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:10:09,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:10:09,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:10:09,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:10:09,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:10:09,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:10:09,740 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 19:10:09,742 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 19:10:09,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:10:09,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:10:09,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:10:09,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:10:09,745 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2024-11-08 19:10:10,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:10:10,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:10:10,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:10:10,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:10:10,334 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:10:10,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c Unable to find full path for "g++" [2024-11-08 19:10:12,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:10:13,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:10:13,254 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2024-11-08 19:10:13,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data/7e4665c87/4582fabd882b47c6b78dc0f66a54b553/FLAG910677590 [2024-11-08 19:10:13,306 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/data/7e4665c87/4582fabd882b47c6b78dc0f66a54b553 [2024-11-08 19:10:13,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:10:13,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:10:13,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:10:13,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:10:13,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:10:13,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:10:13" (1/1) ... [2024-11-08 19:10:13,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40614fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:13, skipping insertion in model container [2024-11-08 19:10:13,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:10:13" (1/1) ... [2024-11-08 19:10:13,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:10:13,714 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2024-11-08 19:10:13,724 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2024-11-08 19:10:13,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:10:13,805 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:10:13,886 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2024-11-08 19:10:13,888 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_40f1684a-2217-48d7-9f87-6acbafd0f7fb/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2024-11-08 19:10:13,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:10:14,003 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:10:14,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14 WrapperNode [2024-11-08 19:10:14,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:10:14,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:10:14,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:10:14,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:10:14,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,095 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-08 19:10:14,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:10:14,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:10:14,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:10:14,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:10:14,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,158 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]. [2024-11-08 19:10:14,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:10:14,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:10:14,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:10:14,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:10:14,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (1/1) ... [2024-11-08 19:10:14,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:10:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:14,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:10:14,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:10:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:10:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 19:10:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-08 19:10:14,316 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-08 19:10:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:10:14,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:10:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 19:10:14,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 19:10:14,490 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:10:14,494 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:10:19,368 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-08 19:10:19,368 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:10:19,388 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:10:19,389 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 19:10:19,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:19 BoogieIcfgContainer [2024-11-08 19:10:19,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:10:19,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:10:19,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:10:19,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:10:19,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:10:13" (1/3) ... [2024-11-08 19:10:19,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237c11fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:10:19, skipping insertion in model container [2024-11-08 19:10:19,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:14" (2/3) ... [2024-11-08 19:10:19,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237c11fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:10:19, skipping insertion in model container [2024-11-08 19:10:19,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:19" (3/3) ... [2024-11-08 19:10:19,405 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2024-11-08 19:10:19,425 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:10:19,425 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 19:10:19,511 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:10:19,518 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;@46859dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:10:19,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 19:10:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 19:10:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 19:10:19,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:10:19,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:19,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:10:19,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times [2024-11-08 19:10:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:10:19,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133533224] [2024-11-08 19:10:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:19,553 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 [2024-11-08 19:10:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 19:10:19,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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) [2024-11-08 19:10:19,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 19:10:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:20,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 19:10:20,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:20,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:10:20,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:10:20,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133533224] [2024-11-08 19:10:20,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133533224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:20,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:20,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:10:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138152958] [2024-11-08 19:10:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:20,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:10:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:10:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:10:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:10:20,287 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-08 19:10:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:10:20,331 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2024-11-08 19:10:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:10:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 19:10:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:10:20,346 INFO L225 Difference]: With dead ends: 117 [2024-11-08 19:10:20,346 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 19:10:20,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:10:20,357 INFO L432 NwaCegarLoop]: 82 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, 82 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 [2024-11-08 19:10:20,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:10:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 19:10:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 19:10:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 19:10:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-08 19:10:20,430 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2024-11-08 19:10:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:10:20,430 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-08 19:10:20,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-08 19:10:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-08 19:10:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 19:10:20,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:10:20,433 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:20,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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)] Forceful destruction successful, exit code 0 [2024-11-08 19:10:20,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 19:10:20,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:10:20,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times [2024-11-08 19:10:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:10:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867107789] [2024-11-08 19:10:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:20,642 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 [2024-11-08 19:10:20,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 19:10:20,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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) [2024-11-08 19:10:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 19:19:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:50,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:19:50,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:59,737 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:20:07,865 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:20:14,301 WARN L286 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:20:18,376 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-08 19:20:34,754 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:20:47,409 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:20:59,697 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:21:07,934 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:21:16,059 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 19:21:20,171 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-08 19:21:24,226 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-08 19:21:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:24,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:24,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:24,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867107789] [2024-11-08 19:21:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867107789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:24,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:24,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:21:24,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473937586] [2024-11-08 19:21:24,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:24,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:21:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:21:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-08 19:21:24,233 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2024-11-08 19:21:28,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 19:21:32,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 19:21:36,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 19:21:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:36,881 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2024-11-08 19:21:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:21:36,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 19:21:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:36,884 INFO L225 Difference]: With dead ends: 52 [2024-11-08 19:21:36,884 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 19:21:36,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-08 19:21:36,886 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 65 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:36,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 178 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 142 Unchecked, 12.6s Time] [2024-11-08 19:21:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 19:21:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-08 19:21:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 19:21:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2024-11-08 19:21:36,896 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2024-11-08 19:21:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:36,897 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2024-11-08 19:21:36,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2024-11-08 19:21:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2024-11-08 19:21:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 19:21:36,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:36,900 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:36,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-08 19:21:37,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 19:21:37,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:37,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 847263738, now seen corresponding path program 1 times [2024-11-08 19:21:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366175429] [2024-11-08 19:21:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:37,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:37,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:37,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:37,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:21:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:37,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:21:37,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:37,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:37,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366175429] [2024-11-08 19:21:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366175429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:37,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:37,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:21:37,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208364555] [2024-11-08 19:21:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:37,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:21:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:21:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:21:37,416 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:38,093 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2024-11-08 19:21:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:21:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-08 19:21:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:38,097 INFO L225 Difference]: With dead ends: 104 [2024-11-08 19:21:38,098 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 19:21:38,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:21:38,100 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:38,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 148 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 19:21:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 19:21:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-08 19:21:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-08 19:21:38,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-11-08 19:21:38,121 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2024-11-08 19:21:38,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:38,121 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-11-08 19:21:38,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-11-08 19:21:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 19:21:38,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:38,124 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:38,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:21:38,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:38,324 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:38,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -818654350, now seen corresponding path program 1 times [2024-11-08 19:21:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:38,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938277865] [2024-11-08 19:21:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:38,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:38,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:38,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:21:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:38,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 19:21:38,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 19:21:38,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:38,604 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938277865] [2024-11-08 19:21:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938277865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:38,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:38,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:21:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790013528] [2024-11-08 19:21:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:38,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:21:38,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:21:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:21:38,606 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:38,648 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2024-11-08 19:21:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:21:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-08 19:21:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:38,650 INFO L225 Difference]: With dead ends: 72 [2024-11-08 19:21:38,650 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 19:21:38,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:21:38,652 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:38,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:21:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 19:21:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 19:21:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-08 19:21:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-08 19:21:38,675 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 46 [2024-11-08 19:21:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:38,675 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-08 19:21:38,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-08 19:21:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 19:21:38,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:38,677 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:38,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:21:38,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:38,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:38,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2080885740, now seen corresponding path program 1 times [2024-11-08 19:21:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926937445] [2024-11-08 19:21:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:38,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:38,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:38,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:38,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:21:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:38,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:21:38,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 19:21:39,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:39,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926937445] [2024-11-08 19:21:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926937445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:39,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:39,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:21:39,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206301629] [2024-11-08 19:21:39,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:39,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:21:39,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:21:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:21:39,242 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:39,349 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2024-11-08 19:21:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:21:39,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2024-11-08 19:21:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:39,351 INFO L225 Difference]: With dead ends: 73 [2024-11-08 19:21:39,351 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 19:21:39,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:21:39,353 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:39,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:21:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 19:21:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 19:21:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-08 19:21:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2024-11-08 19:21:39,367 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 48 [2024-11-08 19:21:39,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:39,368 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2024-11-08 19:21:39,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2024-11-08 19:21:39,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 19:21:39,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:39,370 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:39,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:21:39,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:39,575 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:39,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1494079726, now seen corresponding path program 1 times [2024-11-08 19:21:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:39,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008165091] [2024-11-08 19:21:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:39,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:39,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:39,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:39,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:21:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:39,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:21:39,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:39,933 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:39,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008165091] [2024-11-08 19:21:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008165091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:39,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:21:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92053288] [2024-11-08 19:21:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:39,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:21:39,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:21:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:21:39,937 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:40,411 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2024-11-08 19:21:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:21:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-08 19:21:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:40,413 INFO L225 Difference]: With dead ends: 105 [2024-11-08 19:21:40,413 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 19:21:40,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:21:40,415 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:40,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 19:21:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 19:21:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-08 19:21:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 49 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-11-08 19:21:40,427 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 48 [2024-11-08 19:21:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:40,427 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-11-08 19:21:40,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-11-08 19:21:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 19:21:40,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:40,430 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:40,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:40,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:40,631 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:40,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash -597199418, now seen corresponding path program 1 times [2024-11-08 19:21:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:40,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732596744] [2024-11-08 19:21:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:40,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:40,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:40,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:40,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:21:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:40,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:21:40,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:40,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:40,953 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732596744] [2024-11-08 19:21:40,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732596744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:40,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:40,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:21:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998164079] [2024-11-08 19:21:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:40,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:21:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:21:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:21:40,956 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:41,545 INFO L93 Difference]: Finished difference Result 117 states and 161 transitions. [2024-11-08 19:21:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:21:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-11-08 19:21:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:41,547 INFO L225 Difference]: With dead ends: 117 [2024-11-08 19:21:41,547 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 19:21:41,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:21:41,549 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 14 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:41,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 164 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 19:21:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 19:21:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-11-08 19:21:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 52 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-11-08 19:21:41,561 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 49 [2024-11-08 19:21:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:41,562 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-11-08 19:21:41,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-11-08 19:21:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 19:21:41,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:41,565 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:41,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:41,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:41,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:41,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1236624906, now seen corresponding path program 1 times [2024-11-08 19:21:41,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:41,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953471497] [2024-11-08 19:21:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:41,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:41,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:41,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:21:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:41,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:21:41,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:42,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:42,368 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953471497] [2024-11-08 19:21:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953471497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:21:42,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970986955] [2024-11-08 19:21:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:42,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:21:42,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:42,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:21:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:21:42,370 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:43,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:43,083 INFO L93 Difference]: Finished difference Result 123 states and 168 transitions. [2024-11-08 19:21:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:21:43,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-11-08 19:21:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:43,085 INFO L225 Difference]: With dead ends: 123 [2024-11-08 19:21:43,085 INFO L226 Difference]: Without dead ends: 71 [2024-11-08 19:21:43,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:21:43,087 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:43,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 171 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 19:21:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-08 19:21:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2024-11-08 19:21:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 50 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-08 19:21:43,099 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 49 [2024-11-08 19:21:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:43,099 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-08 19:21:43,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-08 19:21:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 19:21:43,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:43,102 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:43,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 19:21:43,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:43,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:43,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash 467317678, now seen corresponding path program 1 times [2024-11-08 19:21:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214696705] [2024-11-08 19:21:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:43,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:43,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:21:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:43,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:21:43,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:44,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:44,176 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:44,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214696705] [2024-11-08 19:21:44,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214696705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:44,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:21:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025649533] [2024-11-08 19:21:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:44,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:21:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:21:44,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:21:44,179 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:45,303 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2024-11-08 19:21:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:21:45,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-08 19:21:45,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:45,305 INFO L225 Difference]: With dead ends: 128 [2024-11-08 19:21:45,305 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 19:21:45,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:21:45,306 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:45,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 220 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 19:21:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 19:21:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2024-11-08 19:21:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.34) internal successors, (67), 51 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-11-08 19:21:45,321 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 50 [2024-11-08 19:21:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:45,321 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-11-08 19:21:45,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:21:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-11-08 19:21:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 19:21:45,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:45,324 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:45,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:21:45,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:45,528 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:45,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:45,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1088218183, now seen corresponding path program 1 times [2024-11-08 19:21:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727794306] [2024-11-08 19:21:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:45,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:45,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:45,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:45,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:21:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:45,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:21:45,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:46,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 19:21:47,105 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:47,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727794306] [2024-11-08 19:21:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727794306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:47,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:21:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-08 19:21:47,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818662136] [2024-11-08 19:21:47,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:47,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:21:47,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:47,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:21:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:21:47,109 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 19:21:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:48,487 INFO L93 Difference]: Finished difference Result 134 states and 186 transitions. [2024-11-08 19:21:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:21:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2024-11-08 19:21:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:48,490 INFO L225 Difference]: With dead ends: 134 [2024-11-08 19:21:48,490 INFO L226 Difference]: Without dead ends: 83 [2024-11-08 19:21:48,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:21:48,491 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 25 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:48,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 269 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 19:21:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-08 19:21:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2024-11-08 19:21:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 59 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2024-11-08 19:21:48,510 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 51 [2024-11-08 19:21:48,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:48,511 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2024-11-08 19:21:48,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 19:21:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2024-11-08 19:21:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 19:21:48,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:48,518 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:48,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:48,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:48,719 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:48,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1276398791, now seen corresponding path program 1 times [2024-11-08 19:21:48,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:48,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055280066] [2024-11-08 19:21:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:48,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:48,721 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:48,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:21:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:48,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:21:48,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:21:49,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 19:21:51,494 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:51,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055280066] [2024-11-08 19:21:51,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055280066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:51,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:21:51,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-08 19:21:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096976190] [2024-11-08 19:21:51,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:51,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 19:21:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 19:21:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:21:51,497 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 19:21:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:54,613 INFO L93 Difference]: Finished difference Result 164 states and 232 transitions. [2024-11-08 19:21:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 19:21:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2024-11-08 19:21:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:54,615 INFO L225 Difference]: With dead ends: 164 [2024-11-08 19:21:54,616 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 19:21:54,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2024-11-08 19:21:54,617 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 76 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:54,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 354 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 19:21:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 19:21:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 71. [2024-11-08 19:21:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.403225806451613) internal successors, (87), 63 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2024-11-08 19:21:54,633 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 53 [2024-11-08 19:21:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:54,634 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2024-11-08 19:21:54,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 19:21:54,634 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2024-11-08 19:21:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 19:21:54,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:54,636 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:54,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:54,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:54,837 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:54,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2003925934, now seen corresponding path program 2 times [2024-11-08 19:21:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:54,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321207223] [2024-11-08 19:21:54,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:21:54,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:54,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:54,838 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:54,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:21:54,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 19:21:54,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:21:54,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:21:54,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 19:21:55,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:55,596 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321207223] [2024-11-08 19:21:55,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321207223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:55,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:55,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:21:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516261953] [2024-11-08 19:21:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:55,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:21:55,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:21:55,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:21:55,599 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:56,278 INFO L93 Difference]: Finished difference Result 100 states and 140 transitions. [2024-11-08 19:21:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:21:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-11-08 19:21:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:56,281 INFO L225 Difference]: With dead ends: 100 [2024-11-08 19:21:56,281 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 19:21:56,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:21:56,282 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 17 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:56,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 19:21:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 19:21:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-11-08 19:21:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.3855421686746987) internal successors, (115), 85 states have internal predecessors, (115), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-08 19:21:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 133 transitions. [2024-11-08 19:21:56,306 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 133 transitions. Word has length 60 [2024-11-08 19:21:56,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:56,306 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 133 transitions. [2024-11-08 19:21:56,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 133 transitions. [2024-11-08 19:21:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 19:21:56,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:56,308 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:56,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 19:21:56,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:56,509 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:56,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1905110892, now seen corresponding path program 1 times [2024-11-08 19:21:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388136229] [2024-11-08 19:21:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:56,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:56,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:56,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:56,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 19:21:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:56,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:21:56,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 19:21:56,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:21:56,900 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:56,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388136229] [2024-11-08 19:21:56,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388136229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:21:56,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:21:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:21:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189300762] [2024-11-08 19:21:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:56,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:21:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:21:56,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:21:56,902 INFO L87 Difference]: Start difference. First operand 94 states and 133 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:57,182 INFO L93 Difference]: Finished difference Result 109 states and 149 transitions. [2024-11-08 19:21:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:21:57,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2024-11-08 19:21:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:57,185 INFO L225 Difference]: With dead ends: 109 [2024-11-08 19:21:57,185 INFO L226 Difference]: Without dead ends: 103 [2024-11-08 19:21:57,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:21:57,186 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:57,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:21:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-08 19:21:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-08 19:21:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-08 19:21:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 143 transitions. [2024-11-08 19:21:57,207 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 143 transitions. Word has length 62 [2024-11-08 19:21:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:57,208 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 143 transitions. [2024-11-08 19:21:57,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 143 transitions. [2024-11-08 19:21:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 19:21:57,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:57,210 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:57,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 19:21:57,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:57,414 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:57,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1847852590, now seen corresponding path program 1 times [2024-11-08 19:21:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456968290] [2024-11-08 19:21:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:57,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:57,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 19:21:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:57,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:21:57,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-08 19:21:58,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 19:21:59,038 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:21:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456968290] [2024-11-08 19:21:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456968290] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 19:21:59,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:21:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-08 19:21:59,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589971830] [2024-11-08 19:21:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:21:59,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:21:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:21:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:21:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:21:59,040 INFO L87 Difference]: Start difference. First operand 103 states and 143 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:59,357 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2024-11-08 19:21:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:21:59,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2024-11-08 19:21:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:59,358 INFO L225 Difference]: With dead ends: 109 [2024-11-08 19:21:59,358 INFO L226 Difference]: Without dead ends: 98 [2024-11-08 19:21:59,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:21:59,359 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 1 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:59,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 303 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:21:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-08 19:21:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-08 19:21:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 89 states have internal predecessors, (116), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-08 19:21:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 134 transitions. [2024-11-08 19:21:59,373 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 134 transitions. Word has length 62 [2024-11-08 19:21:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:59,374 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 134 transitions. [2024-11-08 19:21:59,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:21:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 134 transitions. [2024-11-08 19:21:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 19:21:59,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:59,376 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:59,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:59,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:59,576 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:59,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:59,577 INFO L85 PathProgramCache]: Analyzing trace with hash -603422504, now seen corresponding path program 1 times [2024-11-08 19:21:59,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:21:59,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572094691] [2024-11-08 19:21:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:59,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:59,579 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:59,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 19:21:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:59,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:21:59,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 19:22:00,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:22:00,219 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:22:00,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572094691] [2024-11-08 19:22:00,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572094691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:00,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:00,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:22:00,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013070373] [2024-11-08 19:22:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:00,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:22:00,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:22:00,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:22:00,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:00,221 INFO L87 Difference]: Start difference. First operand 98 states and 134 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:22:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:00,813 INFO L93 Difference]: Finished difference Result 106 states and 141 transitions. [2024-11-08 19:22:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:22:00,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2024-11-08 19:22:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:00,816 INFO L225 Difference]: With dead ends: 106 [2024-11-08 19:22:00,816 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:22:00,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:00,817 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:00,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 331 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 19:22:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:22:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-08 19:22:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 73 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 19:22:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2024-11-08 19:22:00,829 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 63 [2024-11-08 19:22:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:00,829 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2024-11-08 19:22:00,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:22:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2024-11-08 19:22:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 19:22:00,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:00,831 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:00,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 19:22:01,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:01,035 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:01,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1551153922, now seen corresponding path program 1 times [2024-11-08 19:22:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:22:01,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384398772] [2024-11-08 19:22:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:01,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:01,038 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:01,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 19:22:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:01,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:22:01,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 19:22:01,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:22:01,800 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:22:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384398772] [2024-11-08 19:22:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384398772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:22:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073191040] [2024-11-08 19:22:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:01,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:22:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:22:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:22:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:01,802 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:22:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:02,424 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2024-11-08 19:22:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:22:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2024-11-08 19:22:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:02,427 INFO L225 Difference]: With dead ends: 100 [2024-11-08 19:22:02,427 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 19:22:02,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:02,428 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:02,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 336 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 19:22:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 19:22:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-08 19:22:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 82 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-08 19:22:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2024-11-08 19:22:02,446 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 64 [2024-11-08 19:22:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:02,446 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2024-11-08 19:22:02,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 19:22:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2024-11-08 19:22:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 19:22:02,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:02,448 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:02,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 19:22:02,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:02,649 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:02,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1158126912, now seen corresponding path program 1 times [2024-11-08 19:22:02,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:22:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100519404] [2024-11-08 19:22:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:02,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:02,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:02,654 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:02,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 19:22:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:02,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 19:22:02,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 19:22:04,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 19:22:06,026 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:22:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100519404] [2024-11-08 19:22:06,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100519404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:06,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:22:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-08 19:22:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747077257] [2024-11-08 19:22:06,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:06,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:22:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:22:06,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:22:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:22:06,029 INFO L87 Difference]: Start difference. First operand 91 states and 121 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-08 19:22:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:06,901 INFO L93 Difference]: Finished difference Result 113 states and 149 transitions. [2024-11-08 19:22:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:22:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2024-11-08 19:22:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:06,903 INFO L225 Difference]: With dead ends: 113 [2024-11-08 19:22:06,903 INFO L226 Difference]: Without dead ends: 80 [2024-11-08 19:22:06,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:22:06,904 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 48 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:06,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 457 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 19:22:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-08 19:22:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-11-08 19:22:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 69 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 19:22:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2024-11-08 19:22:06,915 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 64 [2024-11-08 19:22:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:06,916 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2024-11-08 19:22:06,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-08 19:22:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2024-11-08 19:22:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 19:22:06,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:06,918 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:06,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 19:22:07,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:07,119 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:07,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1537734716, now seen corresponding path program 1 times [2024-11-08 19:22:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:22:07,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534028972] [2024-11-08 19:22:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:07,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:07,121 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:07,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 19:22:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:07,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:22:07,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 19:22:08,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 19:22:08,714 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:22:08,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534028972] [2024-11-08 19:22:08,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534028972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:08,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:22:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-08 19:22:08,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792281284] [2024-11-08 19:22:08,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:08,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:22:08,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:22:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:22:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:22:08,717 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:22:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:09,233 INFO L93 Difference]: Finished difference Result 107 states and 138 transitions. [2024-11-08 19:22:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:22:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-11-08 19:22:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:09,235 INFO L225 Difference]: With dead ends: 107 [2024-11-08 19:22:09,235 INFO L226 Difference]: Without dead ends: 77 [2024-11-08 19:22:09,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:22:09,236 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:09,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 374 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 19:22:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-08 19:22:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-08 19:22:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 69 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:22:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2024-11-08 19:22:09,245 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 67 [2024-11-08 19:22:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:09,245 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2024-11-08 19:22:09,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:22:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2024-11-08 19:22:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 19:22:09,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:09,247 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:09,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 19:22:09,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:09,448 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:09,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1876831124, now seen corresponding path program 1 times [2024-11-08 19:22:09,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:22:09,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879354121] [2024-11-08 19:22:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:09,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:09,451 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:09,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 19:22:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:09,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:22:09,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 19:22:10,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 19:22:11,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:22:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879354121] [2024-11-08 19:22:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879354121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:11,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:22:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-08 19:22:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639754022] [2024-11-08 19:22:11,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:11,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:22:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:22:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:22:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:22:11,115 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:22:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:11,738 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2024-11-08 19:22:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:22:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2024-11-08 19:22:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:11,740 INFO L225 Difference]: With dead ends: 78 [2024-11-08 19:22:11,740 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 19:22:11,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:22:11,742 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:11,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 206 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 19:22:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 19:22:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 19:22:11,754 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) [2024-11-08 19:22:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 19:22:11,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-11-08 19:22:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:11,755 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 19:22:11,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:22:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 19:22:11,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 19:22:11,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-08 19:22:11,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 19:22:11,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 19:22:11,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:11,962 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:11,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 19:22:18,363 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:22:18,379 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,380 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,380 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,380 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,384 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,384 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,392 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,392 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,392 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,393 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,397 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,398 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,398 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-08 19:22:18,398 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-08 19:22:18,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:22:18 BoogieIcfgContainer [2024-11-08 19:22:18,399 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:22:18,399 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:22:18,400 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:22:18,400 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:22:18,400 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:19" (3/4) ... [2024-11-08 19:22:18,404 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 19:22:18,409 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-08 19:22:18,409 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-08 19:22:18,420 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-08 19:22:18,420 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-08 19:22:18,421 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 19:22:18,421 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 19:22:18,459 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-11-08 19:22:18,459 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((\old(m) >= 33554432) || ((m == \old(m)) && !(m < 16777216)))) && ((0 != \old(e)) || !(e <= -128))) [2024-11-08 19:22:18,499 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-11-08 19:22:18,500 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((\old(m) >= 33554432) || ((m == \old(m)) && !(m < 16777216)))) && ((0 != \old(e)) || !(e <= -128))) [2024-11-08 19:22:18,558 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 19:22:18,559 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 19:22:18,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:22:18,560 INFO L158 Benchmark]: Toolchain (without parser) took 725242.27ms. Allocated memory was 77.6MB in the beginning and 239.1MB in the end (delta: 161.5MB). Free memory was 54.2MB in the beginning and 79.9MB in the end (delta: -25.7MB). Peak memory consumption was 136.8MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,560 INFO L158 Benchmark]: CDTParser took 1.54ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:22:18,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 684.99ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 54.0MB in the beginning and 86.1MB in the end (delta: -32.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.66ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,561 INFO L158 Benchmark]: Boogie Preprocessor took 115.49ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 81.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,563 INFO L158 Benchmark]: RCFGBuilder took 5177.26ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 63.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,563 INFO L158 Benchmark]: TraceAbstraction took 719004.19ms. Allocated memory was 109.1MB in the beginning and 239.1MB in the end (delta: 130.0MB). Free memory was 62.2MB in the beginning and 87.2MB in the end (delta: -25.0MB). Peak memory consumption was 108.3MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,564 INFO L158 Benchmark]: Witness Printer took 159.45ms. Allocated memory is still 239.1MB. Free memory was 87.2MB in the beginning and 79.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 19:22:18,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 684.99ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 54.0MB in the beginning and 86.1MB in the end (delta: -32.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.66ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 115.49ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 81.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5177.26ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 63.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 719004.19ms. Allocated memory was 109.1MB in the beginning and 239.1MB in the end (delta: 130.0MB). Free memory was 62.2MB in the beginning and 87.2MB in the end (delta: -25.0MB). Peak memory consumption was 108.3MB. Max. memory is 16.1GB. * Witness Printer took 159.45ms. Allocated memory is still 239.1MB. Free memory was 87.2MB in the beginning and 79.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven * 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: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 60]: 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 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 712.5s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 329 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 328 mSDsluCounter, 4618 SdHoareTripleChecker+Invalid, 22.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 142 IncrementalHoareTripleChecker+Unchecked, 3485 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 997 IncrementalHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 1133 mSDtfsCounter, 997 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1327 GetRequests, 1218 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=13, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 107 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 570.8s SatisfiabilityAnalysisTime, 110.7s InterpolantComputationTime, 964 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1307 ConstructedInterpolants, 2 QuantifiedInterpolants, 2449 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1669 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 25 InterpolantComputations, 14 PerfectInterpolantSequences, 951/1027 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((\old(m) >= 33554432) || ((m == \old(m)) && !(m < 16777216)))) && ((0 != \old(e)) || !(e <= -128))) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) - ProcedureContractResult [Line: 67]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((0 != m) || (0 == \result)) - ProcedureContractResult [Line: 58]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (0 != cond) Ensures: (0 != cond) RESULT: Ultimate proved your program to be correct! [2024-11-08 19:22:18,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40f1684a-2217-48d7-9f87-6acbafd0f7fb/bin/uautomizer-verify-jihMAELWvX/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 Writing output log to file Ultimate.log Result: TRUE