./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91 --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 64bit --witnessprinter.graph.data.programhash 5a1c69a049a9608f95ac90730c4f7554434241d21538bbd7cbbae38e9a8e04bb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:54,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:54,423 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:10:54,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:54,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:54,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:54,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:54,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:54,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:54,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:54,462 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:54,462 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:54,463 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:54,464 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:54,464 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:54,465 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:54,465 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:54,466 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:54,466 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:54,467 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:54,467 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:54,468 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:54,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:54,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:54,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:54,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:54,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:54,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:54,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:54,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:54,473 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:54,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:54,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:54,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:54,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:54,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:54,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:54,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:54,488 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:54,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:54,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:54,489 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:54,489 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:54,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:54,490 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a1c69a049a9608f95ac90730c4f7554434241d21538bbd7cbbae38e9a8e04bb [2023-11-25 00:10:54,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:54,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:54,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:54,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:54,830 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:54,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2023-11-25 00:10:57,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:58,169 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:58,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2023-11-25 00:10:58,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data/75538d157/ea1f864ae9bf450bb67b0bf2d4ae4b88/FLAGce87badaf [2023-11-25 00:10:58,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data/75538d157/ea1f864ae9bf450bb67b0bf2d4ae4b88 [2023-11-25 00:10:58,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:58,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:58,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:58,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:58,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:58,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a56230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58, skipping insertion in model container [2023-11-25 00:10:58,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:58,411 WARN L240 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_fe7025c5-fa59-4834-bdd7-0d9948c26f33/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1248,1261] [2023-11-25 00:10:58,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:58,465 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:58,478 WARN L240 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_fe7025c5-fa59-4834-bdd7-0d9948c26f33/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1248,1261] [2023-11-25 00:10:58,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:58,518 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:58,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58 WrapperNode [2023-11-25 00:10:58,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:58,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:58,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:58,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:58,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,608 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 216 [2023-11-25 00:10:58,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:58,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:58,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:58,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:58,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:58,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:58,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:58,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:58,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (1/1) ... [2023-11-25 00:10:58,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:58,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:58,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:10:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:58,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:58,910 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:58,913 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:59,425 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:59,821 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:59,821 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:10:59,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:59 BoogieIcfgContainer [2023-11-25 00:10:59,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:59,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:59,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:59,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:59,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:58" (1/3) ... [2023-11-25 00:10:59,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f267f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:59, skipping insertion in model container [2023-11-25 00:10:59,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:58" (2/3) ... [2023-11-25 00:10:59,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f267f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:59, skipping insertion in model container [2023-11-25 00:10:59,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:59" (3/3) ... [2023-11-25 00:10:59,836 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pipeline.c [2023-11-25 00:10:59,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:59,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:10:59,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:59,934 INFO L357 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, mHoare=true, 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;@63132f59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:59,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:10:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-25 00:10:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:10:59,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:59,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:10:59,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:59,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash 8210814, now seen corresponding path program 1 times [2023-11-25 00:10:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:59,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757673432] [2023-11-25 00:10:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:11:00,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:11:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:11:00,482 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:11:00,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:11:00,490 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:11:00,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:11:00,498 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:11:00,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:11:00,533 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-25 00:11:00,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:11:00 BoogieIcfgContainer [2023-11-25 00:11:00,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:11:00,551 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:11:00,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:11:00,551 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:11:00,552 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:59" (3/4) ... [2023-11-25 00:11:00,557 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:11:00,558 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:11:00,560 INFO L158 Benchmark]: Toolchain (without parser) took 2363.73ms. Allocated memory is still 157.3MB. Free memory was 129.6MB in the beginning and 106.3MB in the end (delta: 23.3MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-11-25 00:11:00,560 INFO L158 Benchmark]: CDTParser took 1.23ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:11:00,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.18ms. Allocated memory is still 157.3MB. Free memory was 129.6MB in the beginning and 117.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:11:00,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.26ms. Allocated memory is still 157.3MB. Free memory was 117.1MB in the beginning and 113.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:11:00,565 INFO L158 Benchmark]: Boogie Preprocessor took 59.74ms. Allocated memory is still 157.3MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:11:00,569 INFO L158 Benchmark]: RCFGBuilder took 1154.01ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 72.9MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-25 00:11:00,571 INFO L158 Benchmark]: TraceAbstraction took 721.16ms. Allocated memory is still 157.3MB. Free memory was 72.4MB in the beginning and 107.3MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:11:00,572 INFO L158 Benchmark]: Witness Printer took 8.16ms. Allocated memory is still 157.3MB. Free memory was 107.3MB in the beginning and 106.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:11:00,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.18ms. Allocated memory is still 157.3MB. Free memory was 129.6MB in the beginning and 117.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.26ms. Allocated memory is still 157.3MB. Free memory was 117.1MB in the beginning and 113.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.74ms. Allocated memory is still 157.3MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1154.01ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 72.9MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 721.16ms. Allocated memory is still 157.3MB. Free memory was 72.4MB in the beginning and 107.3MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.16ms. Allocated memory is still 157.3MB. Free memory was 107.3MB in the beginning and 106.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 78, overapproximation of bitwiseAnd at line 69. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 1); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (1 - 1); [L32] const SORT_1 var_8 = 0; [L33] const SORT_4 var_21 = 1; [L35] SORT_1 input_2; [L36] SORT_1 input_3; [L37] SORT_4 input_5; [L38] SORT_1 input_6; [L39] SORT_4 input_7; [L41] EXPR __VERIFIER_nondet_uint() & mask_SORT_1 [L41] SORT_1 state_9 = __VERIFIER_nondet_uint() & mask_SORT_1; [L42] EXPR __VERIFIER_nondet_uint() & mask_SORT_1 [L42] SORT_1 state_11 = __VERIFIER_nondet_uint() & mask_SORT_1; [L43] EXPR __VERIFIER_nondet_uint() & mask_SORT_1 [L43] SORT_1 state_13 = __VERIFIER_nondet_uint() & mask_SORT_1; [L44] EXPR __VERIFIER_nondet_uint() & mask_SORT_1 [L44] SORT_1 state_26 = __VERIFIER_nondet_uint() & mask_SORT_1; [L45] EXPR __VERIFIER_nondet_uint() & mask_SORT_1 [L45] SORT_1 state_28 = __VERIFIER_nondet_uint() & mask_SORT_1; [L47] SORT_1 init_10_arg_1 = var_8; [L48] state_9 = init_10_arg_1 [L49] SORT_1 init_12_arg_1 = var_8; [L50] state_11 = init_12_arg_1 [L51] SORT_1 init_14_arg_1 = var_8; [L52] state_13 = init_14_arg_1 [L53] SORT_1 init_27_arg_1 = var_8; [L54] state_26 = init_27_arg_1 [L55] SORT_1 init_29_arg_1 = var_8; [L56] state_28 = init_29_arg_1 VAL [init_10_arg_1=0, init_12_arg_1=0, init_14_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, mask_SORT_1=4294967295, mask_SORT_4=1, msb_SORT_1=2147483648, msb_SORT_4=1, state_11=0, state_13=0, state_26=0, state_28=0, state_9=0, var_21=1, var_8=0] [L59] input_2 = __VERIFIER_nondet_uint() [L60] input_3 = __VERIFIER_nondet_uint() [L61] input_5 = __VERIFIER_nondet_uchar() [L62] input_6 = __VERIFIER_nondet_uint() [L63] input_7 = __VERIFIER_nondet_uchar() [L66] SORT_1 var_15_arg_0 = state_11; [L67] SORT_1 var_15_arg_1 = state_13; [L68] SORT_1 var_15 = var_15_arg_0 + var_15_arg_1; [L69] EXPR var_15 & mask_SORT_1 [L69] var_15 = var_15 & mask_SORT_1 [L70] SORT_1 var_16_arg_0 = state_9; [L71] SORT_1 var_16_arg_1 = var_15; [L72] SORT_4 var_16 = var_16_arg_0 == var_16_arg_1; [L73] SORT_1 var_17_arg_0 = state_9; [L74] SORT_1 var_17_arg_1 = var_8; [L75] SORT_4 var_17 = var_17_arg_0 == var_17_arg_1; [L76] SORT_4 var_18_arg_0 = var_16; [L77] SORT_4 var_18_arg_1 = var_17; [L78] EXPR var_18_arg_0 | var_18_arg_1 [L78] SORT_4 var_18 = var_18_arg_0 | var_18_arg_1; [L79] SORT_4 var_22_arg_0 = var_18; [L80] SORT_4 var_22 = ~var_22_arg_0; [L81] SORT_4 var_23_arg_0 = var_21; [L82] SORT_4 var_23_arg_1 = var_22; [L83] EXPR var_23_arg_0 & var_23_arg_1 [L83] SORT_4 var_23 = var_23_arg_0 & var_23_arg_1; [L84] EXPR var_23 & mask_SORT_4 [L84] var_23 = var_23 & mask_SORT_4 [L85] SORT_4 bad_24_arg_0 = var_23; [L86] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-25 00:11:00,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91 --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 64bit --witnessprinter.graph.data.programhash 5a1c69a049a9608f95ac90730c4f7554434241d21538bbd7cbbae38e9a8e04bb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:11:03,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:11:03,500 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-25 00:11:03,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:11:03,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:11:03,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:11:03,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:11:03,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:11:03,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:11:03,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:11:03,564 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:11:03,564 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:11:03,565 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:11:03,565 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:11:03,566 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:11:03,567 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:11:03,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:11:03,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:11:03,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:11:03,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:11:03,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:11:03,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:11:03,576 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:11:03,577 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:11:03,577 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:11:03,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:11:03,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:11:03,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:11:03,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:11:03,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:11:03,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:11:03,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:11:03,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:11:03,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:11:03,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:11:03,583 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:11:03,583 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:11:03,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:11:03,584 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:11:03,585 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:11:03,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:11:03,586 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a1c69a049a9608f95ac90730c4f7554434241d21538bbd7cbbae38e9a8e04bb [2023-11-25 00:11:04,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:11:04,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:11:04,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:11:04,055 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:11:04,056 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:11:04,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2023-11-25 00:11:07,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:11:07,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:11:07,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2023-11-25 00:11:07,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data/b4da63dc7/7073df3b8ca0443c819e1285e5f2981b/FLAGaec812805 [2023-11-25 00:11:07,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/data/b4da63dc7/7073df3b8ca0443c819e1285e5f2981b [2023-11-25 00:11:07,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:11:07,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:11:07,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:11:07,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:11:07,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:11:07,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5827e2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07, skipping insertion in model container [2023-11-25 00:11:07,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,447 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:11:07,641 WARN L240 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_fe7025c5-fa59-4834-bdd7-0d9948c26f33/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1248,1261] [2023-11-25 00:11:07,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:11:07,694 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:11:07,714 WARN L240 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_fe7025c5-fa59-4834-bdd7-0d9948c26f33/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1248,1261] [2023-11-25 00:11:07,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:11:07,783 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:11:07,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07 WrapperNode [2023-11-25 00:11:07,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:11:07,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:11:07,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:11:07,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:11:07,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,847 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 120 [2023-11-25 00:11:07,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:11:07,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:11:07,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:11:07,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:11:07,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:11:07,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:11:07,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:11:07,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:11:07,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (1/1) ... [2023-11-25 00:11:07,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:11:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:07,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:11:07,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:11:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:11:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:11:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:11:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:11:08,135 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:11:08,139 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:11:08,445 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:11:08,498 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:11:08,503 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:11:08,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:11:08 BoogieIcfgContainer [2023-11-25 00:11:08,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:11:08,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:11:08,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:11:08,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:11:08,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:11:07" (1/3) ... [2023-11-25 00:11:08,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b62708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:11:08, skipping insertion in model container [2023-11-25 00:11:08,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:11:07" (2/3) ... [2023-11-25 00:11:08,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b62708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:11:08, skipping insertion in model container [2023-11-25 00:11:08,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:11:08" (3/3) ... [2023-11-25 00:11:08,516 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pipeline.c [2023-11-25 00:11:08,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:11:08,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:11:08,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:11:08,587 INFO L357 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, mHoare=true, 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;@219f2078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:11:08,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:11:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-25 00:11:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:11:08,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:08,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:11:08,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:11:08,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-25 00:11:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:11:08,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615087050] [2023-11-25 00:11:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:08,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:11:08,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:11:08,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:11:08,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-25 00:11:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:08,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-25 00:11:08,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:09,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:09,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:11:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615087050] [2023-11-25 00:11:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615087050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:09,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:11:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998561541] [2023-11-25 00:11:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:09,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:11:09,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:11:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:11:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:11:09,078 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-25 00:11:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:09,142 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-25 00:11:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:11:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-25 00:11:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:09,152 INFO L225 Difference]: With dead ends: 16 [2023-11-25 00:11:09,153 INFO L226 Difference]: Without dead ends: 9 [2023-11-25 00:11:09,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:09,159 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:09,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:11:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-25 00:11:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-25 00:11:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-11-25 00:11:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-25 00:11:09,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-25 00:11:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:09,191 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-25 00:11:09,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-25 00:11:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-25 00:11:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:11:09,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:09,192 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-25 00:11:09,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-25 00:11:09,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:11:09,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:11:09,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-25 00:11:09,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:11:09,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213478388] [2023-11-25 00:11:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:11:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:11:09,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:11:09,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-25 00:11:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:09,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-25 00:11:09,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:09,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:10,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:11:10,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213478388] [2023-11-25 00:11:10,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213478388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:10,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1179486488] [2023-11-25 00:11:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:10,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:11:10,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:11:10,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:11:10,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-25 00:11:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:10,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-25 00:11:10,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:10,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1179486488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497581029] [2023-11-25 00:11:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:11,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:11:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:11,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-25 00:11:11,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:11,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497581029] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:11,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:11:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 12 [2023-11-25 00:11:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530821614] [2023-11-25 00:11:11,887 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:11:11,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:11:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:11:11,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:11:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:11:11,892 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 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) [2023-11-25 00:11:12,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:12,124 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-25 00:11:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:11:12,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-25 00:11:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:12,127 INFO L225 Difference]: With dead ends: 14 [2023-11-25 00:11:12,127 INFO L226 Difference]: Without dead ends: 12 [2023-11-25 00:11:12,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:11:12,130 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:12,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-25 00:11:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-25 00:11:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-11-25 00:11:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-25 00:11:12,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-25 00:11:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:12,142 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-25 00:11:12,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 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) [2023-11-25 00:11:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-25 00:11:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:11:12,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:12,145 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-25 00:11:12,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:12,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:12,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:12,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-25 00:11:12,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:11:12,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-25 00:11:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:11:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173906987] [2023-11-25 00:11:12,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:11:12,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:11:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:11:12,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:11:12,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-25 00:11:12,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:11:12,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:11:12,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-25 00:11:12,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:11:13,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:11:14,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:11:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173906987] [2023-11-25 00:11:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173906987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [751438234] [2023-11-25 00:11:14,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:11:14,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:11:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:11:14,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:11:14,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-25 00:11:14,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:11:14,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:11:14,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-25 00:11:14,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:14,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:11:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [751438234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837870473] [2023-11-25 00:11:16,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:11:16,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:16,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:16,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:16,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:11:16,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:11:16,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:11:16,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-25 00:11:16,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:17,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:11:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837870473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:18,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:11:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 4, 6, 5] total 13 [2023-11-25 00:11:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424018239] [2023-11-25 00:11:18,978 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:11:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-25 00:11:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:11:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-25 00:11:18,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:11:18,981 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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) [2023-11-25 00:11:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:19,313 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-11-25 00:11:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-25 00:11:19,314 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:11:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:19,315 INFO L225 Difference]: With dead ends: 15 [2023-11-25 00:11:19,315 INFO L226 Difference]: Without dead ends: 0 [2023-11-25 00:11:19,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2023-11-25 00:11:19,317 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:19,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-25 00:11:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-25 00:11:19,318 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) [2023-11-25 00:11:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-25 00:11:19,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-11-25 00:11:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:19,319 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-25 00:11:19,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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) [2023-11-25 00:11:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-25 00:11:19,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-25 00:11:19,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:11:19,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:19,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:19,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-11-25 00:11:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-25 00:11:19,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-25 00:11:20,014 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 116) the Hoare annotation is: (and (or (= |ULTIMATE.start_main_~state_9~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~state_9~0#1| (bvand (bvadd |ULTIMATE.start_main_~state_13~0#1| |ULTIMATE.start_main_~state_11~0#1|) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 32)) (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_4~0#1|)) [2023-11-25 00:11:20,014 INFO L899 garLoopResultBuilder]: For program point L57-3(lines 57 116) no Hoare annotation was computed. [2023-11-25 00:11:20,017 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-25 00:11:20,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:11:20,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:11:20 BoogieIcfgContainer [2023-11-25 00:11:20,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:11:20,037 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:11:20,037 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:11:20,038 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:11:20,038 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:11:08" (3/4) ... [2023-11-25 00:11:20,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-25 00:11:20,053 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-25 00:11:20,053 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-25 00:11:20,053 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-25 00:11:20,054 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-25 00:11:20,146 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-25 00:11:20,147 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-25 00:11:20,147 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:11:20,148 INFO L158 Benchmark]: Toolchain (without parser) took 12748.21ms. Allocated memory was 100.7MB in the beginning and 176.2MB in the end (delta: 75.5MB). Free memory was 76.4MB in the beginning and 135.5MB in the end (delta: -59.2MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,148 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 69.2MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 98.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:11:20,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.55ms. Allocated memory is still 100.7MB. Free memory was 76.1MB in the beginning and 63.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,149 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.31ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 61.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,149 INFO L158 Benchmark]: Boogie Preprocessor took 57.31ms. Allocated memory is still 100.7MB. Free memory was 61.5MB in the beginning and 60.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,150 INFO L158 Benchmark]: RCFGBuilder took 590.89ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 71.9MB in the end (delta: -11.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,150 INFO L158 Benchmark]: TraceAbstraction took 11528.19ms. Allocated memory was 100.7MB in the beginning and 176.2MB in the end (delta: 75.5MB). Free memory was 71.3MB in the beginning and 140.8MB in the end (delta: -69.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,151 INFO L158 Benchmark]: Witness Printer took 109.81ms. Allocated memory is still 176.2MB. Free memory was 140.8MB in the beginning and 135.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-25 00:11:20,153 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 69.2MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 98.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.55ms. Allocated memory is still 100.7MB. Free memory was 76.1MB in the beginning and 63.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.31ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 61.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.31ms. Allocated memory is still 100.7MB. Free memory was 61.5MB in the beginning and 60.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.89ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 71.9MB in the end (delta: -11.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11528.19ms. Allocated memory was 100.7MB in the beginning and 176.2MB in the end (delta: 75.5MB). Free memory was 71.3MB in the beginning and 140.8MB in the end (delta: -69.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 109.81ms. Allocated memory is still 176.2MB. Free memory was 140.8MB in the beginning and 135.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 21]: 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 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 4 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 22, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 18 HoareAnnotationTreeSize, 1 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 93 ConstructedInterpolants, 33 QuantifiedInterpolants, 4334 SizeOfPredicates, 233 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 14/54 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: 57]: Loop Invariant Derived loop invariant: ((((state_9 == 0) || (state_9 == (((state_13 + state_11) % 4294967296) & mask_SORT_1))) && (var_8 == 0)) && (1 == mask_SORT_4)) RESULT: Ultimate proved your program to be correct! [2023-11-25 00:11:20,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7025c5-fa59-4834-bdd7-0d9948c26f33/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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