./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 240ff53ce4a5324965a3dcaa21fced56af515b108e64af6d36b0fd1ca1a710eb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:56:21,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:56:21,410 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:56:21,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:56:21,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:56:21,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:56:21,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:56:21,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:56:21,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:56:21,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:56:21,440 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:56:21,441 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:56:21,441 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:56:21,441 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:56:21,441 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:56:21,441 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:56:21,441 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:56:21,441 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:56:21,442 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:56:21,442 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:56:21,442 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:56:21,442 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:56:21,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:56:21,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:56:21,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:56:21,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:56:21,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:56:21,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:56:21,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:56:21,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:56:21,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:56:21,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:56:21,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:56:21,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:56:21,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:56:21,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:56:21,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:56:21,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:56:21,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:56:21,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:56:21,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:56:21,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:56:21,446 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:56:21,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:56:21,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:56:21,446 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:56:21,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:56:21,447 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 240ff53ce4a5324965a3dcaa21fced56af515b108e64af6d36b0fd1ca1a710eb [2024-11-14 03:56:21,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:56:21,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:56:21,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:56:21,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:56:21,808 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:56:21,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c Unable to find full path for "g++" [2024-11-14 03:56:23,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:56:23,913 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:56:23,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c [2024-11-14 03:56:23,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/data/8f33ce520/23b5b37a128048b6901df01c1edb3802/FLAG20d23efc6 [2024-11-14 03:56:23,937 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/data/8f33ce520/23b5b37a128048b6901df01c1edb3802 [2024-11-14 03:56:23,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:56:23,941 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:56:23,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:56:23,943 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:56:23,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:56:23,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:56:23" (1/1) ... [2024-11-14 03:56:23,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3676a870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:23, skipping insertion in model container [2024-11-14 03:56:23,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:56:23" (1/1) ... [2024-11-14 03:56:23,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:56:24,184 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_edf06189-ba46-4d1a-925b-81b9c140d0f1/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c[537,550] [2024-11-14 03:56:24,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:56:24,226 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:56:24,243 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_edf06189-ba46-4d1a-925b-81b9c140d0f1/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c[537,550] [2024-11-14 03:56:24,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:56:24,282 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:56:24,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24 WrapperNode [2024-11-14 03:56:24,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:56:24,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:56:24,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:56:24,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:56:24,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,328 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-14 03:56:24,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:56:24,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:56:24,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:56:24,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:56:24,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:56:24,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:56:24,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:56:24,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:56:24,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (1/1) ... [2024-11-14 03:56:24,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:56:24,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:56:24,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:56:24,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:56:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:56:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:56:24,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:56:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:56:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:56:24,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:56:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:56:24,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:56:24,537 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:56:24,539 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:56:24,699 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-14 03:56:24,700 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:56:24,746 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:56:24,746 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:56:24,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:56:24 BoogieIcfgContainer [2024-11-14 03:56:24,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:56:24,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:56:24,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:56:24,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:56:24,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:56:23" (1/3) ... [2024-11-14 03:56:24,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606f8f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:56:24, skipping insertion in model container [2024-11-14 03:56:24,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:56:24" (2/3) ... [2024-11-14 03:56:24,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606f8f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:56:24, skipping insertion in model container [2024-11-14 03:56:24,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:56:24" (3/3) ... [2024-11-14 03:56:24,759 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound50.c [2024-11-14 03:56:24,779 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:56:24,780 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG lcm2_unwindbound50.c that has 3 procedures, 21 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:56:24,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:56:24,852 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=FINITE_AUTOMATA, 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;@28186de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:56:24,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:56:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:56:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:56:24,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:56:24,866 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:56:24,866 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:56:24,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:56:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1594604368, now seen corresponding path program 1 times [2024-11-14 03:56:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:56:24,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418225886] [2024-11-14 03:56:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:24,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:56:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:56:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:56:25,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:56:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418225886] [2024-11-14 03:56:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418225886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:56:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:56:25,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:56:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308863728] [2024-11-14 03:56:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:56:25,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:56:25,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:56:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:56:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:56:25,112 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-14 03:56:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:56:25,154 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2024-11-14 03:56:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:56:25,160 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), 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 19 [2024-11-14 03:56:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:56:25,170 INFO L225 Difference]: With dead ends: 34 [2024-11-14 03:56:25,171 INFO L226 Difference]: Without dead ends: 19 [2024-11-14 03:56:25,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:56:25,184 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:56:25,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:56:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-14 03:56:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-14 03:56:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:56:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-14 03:56:25,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 19 [2024-11-14 03:56:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:56:25,232 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-14 03:56:25,233 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), 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) [2024-11-14 03:56:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-14 03:56:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:56:25,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:56:25,234 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:56:25,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:56:25,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:56:25,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:56:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1598528367, now seen corresponding path program 1 times [2024-11-14 03:56:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:56:25,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856970224] [2024-11-14 03:56:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:56:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:56:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015441332] [2024-11-14 03:56:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:25,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:56:25,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:56:25,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:56:25,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:56:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:56:25,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:56:25,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:56:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:56:25,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:56:25,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:56:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856970224] [2024-11-14 03:56:25,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:56:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015441332] [2024-11-14 03:56:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015441332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:56:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:56:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:56:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120090311] [2024-11-14 03:56:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:56:25,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:56:25,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:56:25,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:56:25,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:56:25,777 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-14 03:56:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:56:25,916 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2024-11-14 03:56:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:56:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 20 [2024-11-14 03:56:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:56:25,918 INFO L225 Difference]: With dead ends: 30 [2024-11-14 03:56:25,918 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 03:56:25,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:56:25,919 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:56:25,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:56:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 03:56:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 03:56:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:56:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-14 03:56:25,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 20 [2024-11-14 03:56:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:56:25,935 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-14 03:56:25,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-14 03:56:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-14 03:56:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:56:25,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:56:25,937 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:56:25,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 03:56:26,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:56:26,138 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:56:26,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:56:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2136107853, now seen corresponding path program 1 times [2024-11-14 03:56:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:56:26,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985991153] [2024-11-14 03:56:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:56:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:56:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507971301] [2024-11-14 03:56:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:26,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:56:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:56:26,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:56:26,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:56:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:56:29,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 03:56:29,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:56:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 03:56:30,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:56:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:56:31,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:56:31,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985991153] [2024-11-14 03:56:31,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:56:31,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507971301] [2024-11-14 03:56:31,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507971301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:56:31,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2127194936] [2024-11-14 03:56:31,296 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-14 03:56:31,296 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:56:31,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:56:31,304 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:56:31,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:56:33,418 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 128 for LOIs [2024-11-14 03:56:34,098 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-14 03:56:34,100 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:57:05,479 WARN L286 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 128 DAG size of output: 125 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:57:17,907 WARN L286 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 130 DAG size of output: 127 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:57:34,827 WARN L286 SmtUtils]: Spent 10.40s on a formula simplification. DAG size of input: 125 DAG size of output: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:57:57,490 WARN L286 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 123 DAG size of output: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:57:59,630 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '435#(and (<= 1 |#StackHeapBarrier|) (<= ~counter~0 50) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~u~0#1_BEFORE_CALL_13| Int)) (and (<= 2 ~counter~0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_13|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~u~0#1_BEFORE_CALL_13|)) 4294967296) (* 2 (mod (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_23|) 2147483648)))) (exists ((|v_ULTIMATE.start_main_~u~0#1_29| Int) (|v_ULTIMATE.start_main_~y~0#1_31| Int) (|v_ULTIMATE.start_main_~x~0#1_31| Int) (|v_ULTIMATE.start_main_~v~0#1_29| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~x~0#1_31| 4294967296) (mod |v_ULTIMATE.start_main_~y~0#1_31| 4294967296))) (or (and (<= (mod |v_ULTIMATE.start_main_~x~0#1_31| 4294967296) (mod |v_ULTIMATE.start_main_~y~0#1_31| 4294967296)) (= |v_ULTIMATE.start_main_~v~0#1_29| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_13|) (= |v_ULTIMATE.start_main_~u~0#1_BEFORE_CALL_13| (+ |v_ULTIMATE.start_main_~v~0#1_29| |v_ULTIMATE.start_main_~u~0#1_29|)) (= |v_ULTIMATE.start_main_~x~0#1_31| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13|) (= |v_ULTIMATE.start_main_~y~0#1_31| (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_31|))) (and (= |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_13| (+ |v_ULTIMATE.start_main_~v~0#1_29| |v_ULTIMATE.start_main_~u~0#1_29|)) (<= (+ (mod |v_ULTIMATE.start_main_~y~0#1_31| 4294967296) 1) (mod |v_ULTIMATE.start_main_~x~0#1_31| 4294967296)) (= |v_ULTIMATE.start_main_~u~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~u~0#1_29|) (= (+ |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~y~0#1_31|) |v_ULTIMATE.start_main_~x~0#1_31|) (= |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~y~0#1_31|))))))))' at error location [2024-11-14 03:57:59,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:57:59,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:57:59,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 13 [2024-11-14 03:57:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990303938] [2024-11-14 03:57:59,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:57:59,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:57:59,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:57:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:57:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=691, Unknown=18, NotChecked=0, Total=812 [2024-11-14 03:57:59,634 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-14 03:58:02,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:58:04,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:58:06,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:58:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:09,135 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2024-11-14 03:58:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:58:09,136 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 28 [2024-11-14 03:58:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:09,137 INFO L225 Difference]: With dead ends: 38 [2024-11-14 03:58:09,137 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 03:58:09,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=117, Invalid=795, Unknown=18, NotChecked=0, Total=930 [2024-11-14 03:58:09,139 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:09,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 112 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2024-11-14 03:58:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 03:58:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-14 03:58:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:58:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-14 03:58:09,151 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 28 [2024-11-14 03:58:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:09,152 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-14 03:58:09,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-14 03:58:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-14 03:58:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:58:09,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:09,153 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:09,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:58:09,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:09,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:09,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2134320393, now seen corresponding path program 1 times [2024-11-14 03:58:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:09,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041279104] [2024-11-14 03:58:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:58:09,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:09,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041279104] [2024-11-14 03:58:09,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041279104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:58:09,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676618734] [2024-11-14 03:58:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:09,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:09,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:09,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:58:09,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:58:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:09,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:58:09,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:58:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:58:09,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:58:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:58:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676618734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:58:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [888408739] [2024-11-14 03:58:09,953 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 03:58:09,955 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:58:09,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:58:09,956 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:58:09,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:58:10,463 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2024-11-14 03:58:10,472 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-14 03:58:10,473 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:58:22,830 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '731#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:58:22,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:58:22,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:58:22,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-11-14 03:58:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423405731] [2024-11-14 03:58:22,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:58:22,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:58:22,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:22,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:58:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=474, Unknown=3, NotChecked=0, Total=600 [2024-11-14 03:58:22,833 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-14 03:58:23,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:23,048 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-14 03:58:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:58:23,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 28 [2024-11-14 03:58:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:23,049 INFO L225 Difference]: With dead ends: 34 [2024-11-14 03:58:23,050 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 03:58:23,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=130, Invalid=517, Unknown=3, NotChecked=0, Total=650 [2024-11-14 03:58:23,051 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:23,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 48 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:58:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 03:58:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-14 03:58:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:58:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-14 03:58:23,060 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 28 [2024-11-14 03:58:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:23,060 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-14 03:58:23,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-14 03:58:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-14 03:58:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 03:58:23,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:23,062 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:23,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:58:23,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:23,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:23,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:23,263 INFO L85 PathProgramCache]: Analyzing trace with hash -572617715, now seen corresponding path program 1 times [2024-11-14 03:58:23,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:23,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812148453] [2024-11-14 03:58:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:23,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:58:23,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812148453] [2024-11-14 03:58:23,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812148453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:58:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610269737] [2024-11-14 03:58:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:23,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:23,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:58:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:58:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:23,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:58:23,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:58:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:58:24,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:58:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:58:25,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610269737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:58:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390330233] [2024-11-14 03:58:25,388 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 03:58:25,388 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:58:25,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:58:25,388 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:58:25,391 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:58:26,232 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2024-11-14 03:58:26,263 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-14 03:58:26,270 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:58:43,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1052#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:58:43,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:58:43,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:58:43,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 9 [2024-11-14 03:58:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101574632] [2024-11-14 03:58:43,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:58:43,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:58:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:43,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:58:43,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=509, Unknown=5, NotChecked=0, Total=600 [2024-11-14 03:58:43,937 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 03:58:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:45,105 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-14 03:58:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:58:45,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 34 [2024-11-14 03:58:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:45,106 INFO L225 Difference]: With dead ends: 29 [2024-11-14 03:58:45,106 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:58:45,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=94, Invalid=551, Unknown=5, NotChecked=0, Total=650 [2024-11-14 03:58:45,107 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:45,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 62 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:58:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:58:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:58:45,109 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) [2024-11-14 03:58:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:58:45,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2024-11-14 03:58:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:45,110 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:58:45,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 03:58:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:58:45,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:58:45,113 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:58:45,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:58:45,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:45,317 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-14 03:58:45,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 03:58:47,354 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:58:47,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:58:47 BoogieIcfgContainer [2024-11-14 03:58:47,387 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:58:47,388 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:58:47,388 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:58:47,388 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:58:47,389 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:56:24" (3/4) ... [2024-11-14 03:58:47,392 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 03:58:47,395 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-14 03:58:47,395 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-14 03:58:47,399 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-14 03:58:47,399 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-14 03:58:47,399 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 03:58:47,400 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:58:47,400 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:58:47,480 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:58:47,480 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 03:58:47,480 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:58:47,481 INFO L158 Benchmark]: Toolchain (without parser) took 143539.82ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 94.4MB in the beginning and 280.2MB in the end (delta: -185.8MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2024-11-14 03:58:47,482 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:58:47,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.63ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 83.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:58:47,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.38ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:58:47,483 INFO L158 Benchmark]: Boogie Preprocessor took 30.76ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 81.0MB in the end (delta: 662.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:58:47,483 INFO L158 Benchmark]: RCFGBuilder took 386.38ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 68.4MB in the end (delta: 12.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:58:47,484 INFO L158 Benchmark]: TraceAbstraction took 142637.35ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 67.8MB in the beginning and 285.0MB in the end (delta: -217.2MB). Peak memory consumption was 158.2MB. Max. memory is 16.1GB. [2024-11-14 03:58:47,484 INFO L158 Benchmark]: Witness Printer took 92.73ms. Allocated memory is still 318.8MB. Free memory was 285.0MB in the beginning and 280.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:58:47,486 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.63ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 83.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.38ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.76ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 81.0MB in the end (delta: 662.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 386.38ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 68.4MB in the end (delta: 12.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 142637.35ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 67.8MB in the beginning and 285.0MB in the end (delta: -217.2MB). Peak memory consumption was 158.2MB. Max. memory is 16.1GB. * Witness Printer took 92.73ms. Allocated memory is still 318.8MB. Free memory was 285.0MB in the beginning and 280.2MB 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: 14]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 140.5s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 310 SdHoareTripleChecker+Invalid, 9.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 85 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 221 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 118.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 976 SizeOfPredicates, 12 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 162/178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((unsigned long long) a * b) % 2147483648) * 2) == (((__int128) ((unsigned long long) v * y) + ((unsigned long long) u * x)) % 4294967296)) && (1 <= b)) && (a <= 65535)) - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: (((cond != 0) && (counter == 0)) && (counter == \old(counter))) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (0 < cond) Ensures: ((0 < cond) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-14 03:58:47,697 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2024-11-14 03:58:47,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edf06189-ba46-4d1a-925b-81b9c140d0f1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE