./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/ps4-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps4-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:42:56,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:42:56,474 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:42:56,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:42:56,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:42:56,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:42:56,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:42:56,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:42:56,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:42:56,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:42:56,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:42:56,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:42:56,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:42:56,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:42:56,530 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:42:56,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:42:56,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:42:56,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:42:56,532 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:56,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:42:56,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:56,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:42:56,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:42:56,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:42:56,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:42:56,534 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:42:56,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:42:56,534 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 [2024-11-28 02:42:56,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:42:56,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:42:56,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:42:56,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:42:56,877 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:42:56,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-11-28 02:42:59,877 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/data/4e7187f41/7f874326636d4860b085ec605b96b571/FLAGdaee270d1 [2024-11-28 02:43:00,193 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:43:00,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-11-28 02:43:00,203 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/data/4e7187f41/7f874326636d4860b085ec605b96b571/FLAGdaee270d1 [2024-11-28 02:43:00,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/data/4e7187f41/7f874326636d4860b085ec605b96b571 [2024-11-28 02:43:00,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:43:00,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:43:00,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:43:00,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:43:00,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:43:00,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf64d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00, skipping insertion in model container [2024-11-28 02:43:00,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,266 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:43:00,448 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_c168ae90-aa21-48cc-8966-c0e8db3e793b/sv-benchmarks/c/nla-digbench/ps4-ll.c[458,471] [2024-11-28 02:43:00,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:43:00,481 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:43:00,494 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_c168ae90-aa21-48cc-8966-c0e8db3e793b/sv-benchmarks/c/nla-digbench/ps4-ll.c[458,471] [2024-11-28 02:43:00,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:43:00,524 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:43:00,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00 WrapperNode [2024-11-28 02:43:00,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:43:00,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:43:00,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:43:00,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:43:00,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,564 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-28 02:43:00,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:43:00,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:43:00,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:43:00,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:43:00,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,602 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]. [2024-11-28 02:43:00,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,605 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:43:00,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:43:00,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:43:00,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:43:00,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (1/1) ... [2024-11-28 02:43:00,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:43:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:00,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:43:00,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:43:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:43:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:43:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:43:00,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:43:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:43:00,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:43:00,756 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:43:00,759 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:43:00,907 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-28 02:43:00,907 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:43:00,922 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:43:00,923 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:43:00,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:43:00 BoogieIcfgContainer [2024-11-28 02:43:00,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:43:00,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:43:00,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:43:00,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:43:00,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:43:00" (1/3) ... [2024-11-28 02:43:00,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a86d0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:43:00, skipping insertion in model container [2024-11-28 02:43:00,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:43:00" (2/3) ... [2024-11-28 02:43:00,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a86d0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:43:00, skipping insertion in model container [2024-11-28 02:43:00,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:43:00" (3/3) ... [2024-11-28 02:43:00,939 INFO L128 eAbstractionObserver]: Analyzing ICFG ps4-ll.c [2024-11-28 02:43:00,957 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:43:00,961 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ps4-ll.c that has 2 procedures, 16 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:43:01,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:43:01,048 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;@7282a7de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:43:01,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:43:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:43:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:43:01,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:01,062 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:43:01,063 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:01,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:01,072 INFO L85 PathProgramCache]: Analyzing trace with hash 890478906, now seen corresponding path program 1 times [2024-11-28 02:43:01,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98896251] [2024-11-28 02:43:01,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:43:01,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747070524] [2024-11-28 02:43:01,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:01,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:01,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:01,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:43:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:01,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:43:01,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:01,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:43:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98896251] [2024-11-28 02:43:01,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:43:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747070524] [2024-11-28 02:43:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747070524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:01,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:01,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:43:01,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427030796] [2024-11-28 02:43:01,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:01,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:43:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:01,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:43:01,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:43:01,462 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:01,592 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2024-11-28 02:43:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:43:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:43:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:01,604 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:43:01,605 INFO L226 Difference]: Without dead ends: 18 [2024-11-28 02:43:01,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:01,616 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:01,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 46 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:43:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-28 02:43:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-28 02:43:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:43:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-28 02:43:01,657 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2024-11-28 02:43:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:01,657 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-28 02:43:01,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:43:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-28 02:43:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:43:01,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:01,661 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:01,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:43:01,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:01,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:01,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash -202363653, now seen corresponding path program 1 times [2024-11-28 02:43:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044354061] [2024-11-28 02:43:01,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:43:01,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637111529] [2024-11-28 02:43:01,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:01,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:01,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:01,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:01,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:43:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:01,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:43:01,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:02,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:43:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:43:02,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:02,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044354061] [2024-11-28 02:43:02,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:43:02,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637111529] [2024-11-28 02:43:02,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637111529] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:43:02,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:43:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-28 02:43:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313646914] [2024-11-28 02:43:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:02,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:43:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:02,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:43:02,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:43:02,188 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:43:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:02,242 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-28 02:43:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:43:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 02:43:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:02,243 INFO L225 Difference]: With dead ends: 24 [2024-11-28 02:43:02,243 INFO L226 Difference]: Without dead ends: 19 [2024-11-28 02:43:02,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:43:02,245 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:02,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:43:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-28 02:43:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-28 02:43:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:43:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-28 02:43:02,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2024-11-28 02:43:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:02,258 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-28 02:43:02,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:43:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-28 02:43:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 02:43:02,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:02,261 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:02,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:43:02,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:43:02,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:02,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 24108472, now seen corresponding path program 1 times [2024-11-28 02:43:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251658461] [2024-11-28 02:43:02,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:43:02,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538259543] [2024-11-28 02:43:02,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:02,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:02,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:02,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:02,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:43:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:02,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:43:02,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:43:02,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:43:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:43:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251658461] [2024-11-28 02:43:02,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:43:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538259543] [2024-11-28 02:43:02,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538259543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:43:02,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:43:02,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-28 02:43:02,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935095888] [2024-11-28 02:43:02,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:43:02,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:43:02,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:02,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:43:02,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:43:02,906 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:43:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:03,078 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-28 02:43:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:43:03,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2024-11-28 02:43:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:03,080 INFO L225 Difference]: With dead ends: 31 [2024-11-28 02:43:03,080 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 02:43:03,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:43:03,082 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:03,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:43:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 02:43:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-28 02:43:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:43:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-28 02:43:03,094 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2024-11-28 02:43:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:03,095 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-28 02:43:03,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:43:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-28 02:43:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:43:03,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:03,096 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:03,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:43:03,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:03,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:03,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash -384506309, now seen corresponding path program 2 times [2024-11-28 02:43:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:03,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250581028] [2024-11-28 02:43:03,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:43:03,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:03,338 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:43:03,342 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 02:43:03,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437549334] [2024-11-28 02:43:03,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:43:03,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:03,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:03,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:03,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:43:03,406 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:43:03,406 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:43:03,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:43:03,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:43:03,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:43:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:43:04,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250581028] [2024-11-28 02:43:04,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:43:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437549334] [2024-11-28 02:43:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437549334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:43:04,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:43:04,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-28 02:43:04,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319696139] [2024-11-28 02:43:04,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:43:04,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:43:04,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:04,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:43:04,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:43:04,170 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 22 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 02:43:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:04,565 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-28 02:43:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:43:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 36 [2024-11-28 02:43:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:04,566 INFO L225 Difference]: With dead ends: 28 [2024-11-28 02:43:04,566 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:43:04,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:43:04,568 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:04,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 76 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:43:04,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:43:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:43:04,569 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) [2024-11-28 02:43:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:43:04,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2024-11-28 02:43:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:04,569 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:43:04,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 02:43:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:43:04,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:43:04,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:43:04,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:43:04,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:04,780 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-28 02:43:04,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:43:04,972 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:43:05,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:43:05 BoogieIcfgContainer [2024-11-28 02:43:05,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:43:05,003 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:43:05,003 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:43:05,003 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:43:05,004 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:43:00" (3/4) ... [2024-11-28 02:43:05,006 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:43:05,015 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 02:43:05,021 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 02:43:05,021 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:43:05,021 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:43:05,022 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:43:05,112 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:43:05,112 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:43:05,112 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:43:05,115 INFO L158 Benchmark]: Toolchain (without parser) took 4878.93ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 103.5MB in the beginning and 287.3MB in the end (delta: -183.8MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2024-11-28 02:43:05,115 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 167.8MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:43:05,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.98ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 92.5MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:43:05,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.06ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 91.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:43:05,116 INFO L158 Benchmark]: Boogie Preprocessor took 52.91ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 90.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:43:05,116 INFO L158 Benchmark]: RCFGBuilder took 304.41ms. Allocated memory is still 142.6MB. Free memory was 90.2MB in the beginning and 80.2MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:43:05,116 INFO L158 Benchmark]: TraceAbstraction took 4076.03ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 79.6MB in the beginning and 292.1MB in the end (delta: -212.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-11-28 02:43:05,117 INFO L158 Benchmark]: Witness Printer took 109.39ms. Allocated memory is still 369.1MB. Free memory was 292.1MB in the beginning and 287.3MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:43:05,121 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 167.8MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.98ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 92.5MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.06ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 91.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.91ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 90.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.41ms. Allocated memory is still 142.6MB. Free memory was 90.2MB in the beginning and 80.2MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4076.03ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 79.6MB in the beginning and 292.1MB in the end (delta: -212.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Witness Printer took 109.39ms. Allocated memory is still 369.1MB. Free memory was 292.1MB in the beginning and 287.3MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 252 IncrementalHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 43 mSDtfsCounter, 252 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 7 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 95/166 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((__int128) 2 * c) + ((__int128) c * y)) == (((__int128) 2 * y) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (((((((__int128) y * y) * y) * 2) + ((((__int128) y * y) * y) * y)) + ((__int128) y * y)) == ((__int128) x * 4))) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:43:05,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168ae90-aa21-48cc-8966-c0e8db3e793b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE