./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.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_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh --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 278b4de367ce9a5d90b72b56db7b4bfd32cdd3486043ecd2959c1028ac507b6e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:13:25,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:13:25,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:13:25,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:13:25,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:13:25,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:13:25,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:13:25,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:13:25,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:13:25,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:13:25,719 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:13:25,719 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:13:25,720 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:13:25,720 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:13:25,721 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:13:25,721 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:13:25,722 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:13:25,722 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:13:25,723 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:13:25,723 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:13:25,724 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:13:25,724 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:13:25,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:13:25,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:13:25,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:13:25,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:13:25,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:13:25,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:13:25,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:13:25,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:13:25,727 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:13:25,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:13:25,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:13:25,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:13:25,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:13:25,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:13:25,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:13:25,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:13:25,729 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:13:25,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:13:25,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:13:25,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:13:25,730 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:13:25,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:13:25,730 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_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278b4de367ce9a5d90b72b56db7b4bfd32cdd3486043ecd2959c1028ac507b6e [2023-12-02 17:13:25,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:13:25,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:13:25,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:13:25,979 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:13:25,979 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:13:25,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c [2023-12-02 17:13:28,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:13:28,910 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:13:28,911 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c [2023-12-02 17:13:28,919 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data/130db13f6/e95790aeb7f64d6e9d9403b42663b738/FLAG2ceb1f819 [2023-12-02 17:13:28,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data/130db13f6/e95790aeb7f64d6e9d9403b42663b738 [2023-12-02 17:13:28,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:13:28,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:13:28,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:13:28,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:13:28,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:13:28,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:13:28" (1/1) ... [2023-12-02 17:13:28,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a218d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:28, skipping insertion in model container [2023-12-02 17:13:28,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:13:28" (1/1) ... [2023-12-02 17:13:28,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:13:29,081 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_be0ce638-7968-415e-a418-c5e0cf9c6b43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c[1245,1258] [2023-12-02 17:13:29,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:13:29,131 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:13:29,141 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_be0ce638-7968-415e-a418-c5e0cf9c6b43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c[1245,1258] [2023-12-02 17:13:29,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:13:29,179 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:13:29,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29 WrapperNode [2023-12-02 17:13:29,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:13:29,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:13:29,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:13:29,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:13:29,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,241 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 236 [2023-12-02 17:13:29,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:13:29,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:13:29,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:13:29,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:13:29,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:13:29,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:13:29,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:13:29,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:13:29,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (1/1) ... [2023-12-02 17:13:29,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:13:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:13:29,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:13:29,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:13:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:13:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:13:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:13:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:13:29,448 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:13:29,450 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:13:29,773 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:13:29,998 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:13:29,998 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:13:30,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:29 BoogieIcfgContainer [2023-12-02 17:13:30,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:13:30,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:13:30,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:13:30,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:13:30,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:13:28" (1/3) ... [2023-12-02 17:13:30,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca76ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:13:30, skipping insertion in model container [2023-12-02 17:13:30,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:13:29" (2/3) ... [2023-12-02 17:13:30,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca76ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:13:30, skipping insertion in model container [2023-12-02 17:13:30,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:29" (3/3) ... [2023-12-02 17:13:30,007 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b04.c [2023-12-02 17:13:30,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:13:30,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:13:30,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:13:30,066 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;@6f4a4c85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:13:30,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:13:30,070 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) [2023-12-02 17:13:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:13:30,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:13:30,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:13:30,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:13:30,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:13:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash 6557510, now seen corresponding path program 1 times [2023-12-02 17:13:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:13:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239830733] [2023-12-02 17:13:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:13:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:13:31,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:13:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239830733] [2023-12-02 17:13:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239830733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:13:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:13:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:13:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676770022] [2023-12-02 17:13:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:13:31,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:13:31,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:13:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:13:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:13:31,754 INFO L87 Difference]: Start difference. First 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) 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) [2023-12-02 17:13:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:13:31,879 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2023-12-02 17:13:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:13:31,881 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 [2023-12-02 17:13:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:13:31,887 INFO L225 Difference]: With dead ends: 15 [2023-12-02 17:13:31,887 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 17:13:31,889 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 [2023-12-02 17:13:31,893 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:13:31,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:13:31,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 17:13:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 17:13:31,915 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) [2023-12-02 17:13:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 17:13:31,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 17:13:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:13:31,917 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 17:13:31,917 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) [2023-12-02 17:13:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 17:13:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:13:31,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:13:31,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 17:13:31,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:13:31,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:13:31,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:13:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2088107510, now seen corresponding path program 1 times [2023-12-02 17:13:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:13:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932834261] [2023-12-02 17:13:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:31,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:13:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:13:34,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:13:34,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932834261] [2023-12-02 17:13:34,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932834261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:13:34,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056216526] [2023-12-02 17:13:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:34,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:13:34,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:13:34,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:13:34,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:13:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:34,641 WARN L260 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 137 conjunts are in the unsatisfiable core [2023-12-02 17:13:34,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:13:35,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:13:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:13:41,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056216526] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:13:41,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [790179422] [2023-12-02 17:13:41,694 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-12-02 17:13:41,695 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:13:41,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:13:41,703 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:13:41,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:13:44,034 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-12-02 17:13:46,231 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-12-02 17:15:55,859 WARN L293 SmtUtils]: Spent 2.09m on a formula simplification that was a NOOP. DAG size: 1265 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:17:57,121 WARN L293 SmtUtils]: Spent 2.02m on a formula simplification that was a NOOP. DAG size: 1265 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:19:58,941 WARN L293 SmtUtils]: Spent 2.02m on a formula simplification that was a NOOP. DAG size: 1265 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:22:00,194 WARN L293 SmtUtils]: Spent 2.02m on a formula simplification that was a NOOP. DAG size: 1265 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:24:00,449 WARN L293 SmtUtils]: Spent 2.00m on a formula simplification that was a NOOP. DAG size: 1298 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:24:02,146 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-12-02 17:24:04,493 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-12-02 17:24:14,819 WARN L293 SmtUtils]: Spent 6.99s on a formula simplification that was a NOOP. DAG size: 381 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:24:21,889 WARN L293 SmtUtils]: Spent 7.06s on a formula simplification that was a NOOP. DAG size: 381 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:24:29,061 WARN L293 SmtUtils]: Spent 7.08s on a formula simplification that was a NOOP. DAG size: 381 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:24:35,964 WARN L293 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 381 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:24:36,111 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:24:36,433 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '91#(and (<= 0 |ULTIMATE.start_main_~var_21~0#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~msb_SORT_12~0#1| 2147483648) (= 0 |ULTIMATE.start_main_~init_10_arg_1~0#1|) (= |ULTIMATE.start_main_~var_14~0#1| 1) (= 255 |ULTIMATE.start_main_~mask_SORT_4~0#1|) (= (+ |ULTIMATE.start_main_~mask_SORT_12~0#1| 1) 0) (= |ULTIMATE.start_main_~var_27_arg_0~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~init_44_arg_1~0#1| 0) (= |ULTIMATE.start_main_~var_25~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_20_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~state_43~0#1|) (= |ULTIMATE.start_main_~var_21_arg_1~0#1| 1) (= |ULTIMATE.start_main_~var_42~0#1| 0) (= |ULTIMATE.start_main_~msb_SORT_4~0#1| 128) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_22_arg_1~0#1|) (<= 0 |ULTIMATE.start_main_~var_13_arg_0~0#1|) (= |ULTIMATE.start_main_~var_8~0#1| 0) (<= 0 |ULTIMATE.start_main_~var_15~0#1|) (= |ULTIMATE.start_main_~msb_SORT_1~0#1| 1) (= |ULTIMATE.start_main_~init_18_arg_1~0#1| 0) (= |ULTIMATE.start_main_~var_15_arg_1~0#1| 1))' at error location [2023-12-02 17:24:36,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:24:36,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:24:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2023-12-02 17:24:36,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484160399] [2023-12-02 17:24:36,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:24:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:24:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:24:36,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:24:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:24:36,437 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 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) [2023-12-02 17:24:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:36,650 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 17:24:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:24:36,651 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 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 [2023-12-02 17:24:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:36,651 INFO L225 Difference]: With dead ends: 14 [2023-12-02 17:24:36,652 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 17:24:36,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-02 17:24:36,654 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:36,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:24:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 17:24:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 17:24:36,657 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) [2023-12-02 17:24:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 17:24:36,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 17:24:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:36,658 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 17:24:36,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 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) [2023-12-02 17:24:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 17:24:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:24:36,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:36,659 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 17:24:36,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:24:36,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:24:36,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:24:36,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1488629434, now seen corresponding path program 2 times [2023-12-02 17:24:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:24:36,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313540257] [2023-12-02 17:24:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:24:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:24:37,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:24:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:24:37,454 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:24:37,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:24:37,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:24:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:24:37,458 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 17:24:37,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:24:37,490 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 17:24:37,490 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 17:24:37,491 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 17:24:37,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:24:37 BoogieIcfgContainer [2023-12-02 17:24:37,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:24:37,507 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:24:37,507 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:24:37,507 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:24:37,508 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:13:29" (3/4) ... [2023-12-02 17:24:37,509 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:24:37,510 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:24:37,511 INFO L158 Benchmark]: Toolchain (without parser) took 668576.22ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 122.9MB in the beginning and 687.8MB in the end (delta: -564.9MB). Peak memory consumption was 457.2MB. Max. memory is 16.1GB. [2023-12-02 17:24:37,511 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:24:37,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.37ms. Allocated memory is still 155.2MB. Free memory was 122.6MB in the beginning and 110.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 17:24:37,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.31ms. Allocated memory is still 155.2MB. Free memory was 110.0MB in the beginning and 105.3MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:24:37,513 INFO L158 Benchmark]: Boogie Preprocessor took 45.24ms. Allocated memory is still 155.2MB. Free memory was 105.3MB in the beginning and 103.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:24:37,513 INFO L158 Benchmark]: RCFGBuilder took 712.40ms. Allocated memory is still 155.2MB. Free memory was 103.2MB in the beginning and 103.2MB in the end (delta: 51.7kB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2023-12-02 17:24:37,514 INFO L158 Benchmark]: TraceAbstraction took 667504.16ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 102.4MB in the beginning and 687.8MB in the end (delta: -585.4MB). Peak memory consumption was 435.6MB. Max. memory is 16.1GB. [2023-12-02 17:24:37,514 INFO L158 Benchmark]: Witness Printer took 3.52ms. Allocated memory is still 1.2GB. Free memory is still 687.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:24:37,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.37ms. Allocated memory is still 155.2MB. Free memory was 122.6MB in the beginning and 110.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.31ms. Allocated memory is still 155.2MB. Free memory was 110.0MB in the beginning and 105.3MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.24ms. Allocated memory is still 155.2MB. Free memory was 105.3MB in the beginning and 103.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 712.40ms. Allocated memory is still 155.2MB. Free memory was 103.2MB in the beginning and 103.2MB in the end (delta: 51.7kB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * TraceAbstraction took 667504.16ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 102.4MB in the beginning and 687.8MB in the end (delta: -585.4MB). Peak memory consumption was 435.6MB. Max. memory is 16.1GB. * Witness Printer took 3.52ms. Allocated memory is still 1.2GB. Free memory is still 687.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 97, overapproximation of bitwiseAnd at line 80. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 8); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L32] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 32); [L33] const SORT_12 msb_SORT_12 = (SORT_12)1 << (32 - 1); [L35] const SORT_4 var_8 = 0; [L36] const SORT_12 var_14 = 1; [L37] const SORT_1 var_25 = 1; [L38] const SORT_1 var_42 = 0; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_4 input_5; [L43] SORT_1 input_6; [L44] SORT_1 input_7; [L45] SORT_4 input_29; [L46] SORT_4 input_31; [L47] SORT_4 input_33; [L48] SORT_4 input_35; [L49] SORT_4 input_37; [L50] SORT_4 input_39; [L52] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L52] SORT_4 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L53] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L53] SORT_4 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L54] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L54] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_4 init_10_arg_1 = var_8; [L57] state_9 = init_10_arg_1 [L58] SORT_4 init_18_arg_1 = var_8; [L59] state_17 = init_18_arg_1 [L60] SORT_1 init_44_arg_1 = var_42; [L61] state_43 = init_44_arg_1 VAL [init_10_arg_1=0, init_18_arg_1=0, init_44_arg_1=0, mask_SORT_12=4294967295, mask_SORT_1=1, mask_SORT_4=255, msb_SORT_12=2147483648, msb_SORT_1=1, msb_SORT_4=128, state_17=0, state_43=0, state_9=0, var_14=1, var_25=1, var_42=0, var_8=0] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_3 = __VERIFIER_nondet_uchar() [L66] input_5 = __VERIFIER_nondet_uchar() [L67] input_6 = __VERIFIER_nondet_uchar() [L68] input_7 = __VERIFIER_nondet_uchar() [L69] input_29 = __VERIFIER_nondet_uchar() [L70] input_31 = __VERIFIER_nondet_uchar() [L71] input_33 = __VERIFIER_nondet_uchar() [L72] input_35 = __VERIFIER_nondet_uchar() [L73] input_37 = __VERIFIER_nondet_uchar() [L74] input_39 = __VERIFIER_nondet_uchar() [L77] SORT_4 var_11_arg_0 = state_9; [L78] SORT_1 var_11 = var_11_arg_0 >> 7; [L79] SORT_1 var_13_arg_0 = var_11; [L80] EXPR var_13_arg_0 & mask_SORT_1 [L80] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L81] SORT_12 var_13 = var_13_arg_0; [L82] SORT_12 var_15_arg_0 = var_13; [L83] SORT_12 var_15_arg_1 = var_14; [L84] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L85] SORT_1 var_16_arg_0 = var_15; [L86] SORT_1 var_16 = ~var_16_arg_0; [L87] SORT_4 var_19_arg_0 = state_17; [L88] SORT_1 var_19 = var_19_arg_0 >> 7; [L89] SORT_1 var_20_arg_0 = var_19; [L90] EXPR var_20_arg_0 & mask_SORT_1 [L90] var_20_arg_0 = var_20_arg_0 & mask_SORT_1 [L91] SORT_12 var_20 = var_20_arg_0; [L92] SORT_12 var_21_arg_0 = var_20; [L93] SORT_12 var_21_arg_1 = var_14; [L94] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L95] SORT_1 var_22_arg_0 = var_16; [L96] SORT_1 var_22_arg_1 = var_21; [L97] EXPR var_22_arg_0 | var_22_arg_1 [L97] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L98] SORT_1 var_26_arg_0 = var_22; [L99] SORT_1 var_26 = ~var_26_arg_0; [L100] SORT_1 var_27_arg_0 = var_25; [L101] SORT_1 var_27_arg_1 = var_26; [L102] EXPR var_27_arg_0 & var_27_arg_1 [L102] SORT_1 var_27 = var_27_arg_0 & var_27_arg_1; [L103] EXPR var_27 & mask_SORT_1 [L103] var_27 = var_27 & mask_SORT_1 [L104] SORT_1 bad_28_arg_0 = var_27; [L105] CALL __VERIFIER_assert(!(bad_28_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L105] RET __VERIFIER_assert(!(bad_28_arg_0)) [L107] SORT_1 var_45_arg_0 = state_43; [L108] SORT_4 var_45_arg_1 = input_5; [L109] SORT_4 var_45_arg_2 = state_9; [L110] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L111] SORT_4 next_46_arg_1 = var_45; [L112] SORT_1 var_47_arg_0 = state_43; [L113] SORT_4 var_47_arg_1 = input_5; [L114] SORT_4 var_47_arg_2 = state_17; [L115] SORT_4 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L116] SORT_4 next_48_arg_1 = var_47; [L117] SORT_1 var_49_arg_0 = state_43; [L118] SORT_1 var_49_arg_1 = var_42; [L119] SORT_1 var_49_arg_2 = var_25; [L120] SORT_1 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L121] EXPR var_49 & mask_SORT_1 [L121] var_49 = var_49 & mask_SORT_1 [L122] SORT_1 next_50_arg_1 = var_49; [L124] state_9 = next_46_arg_1 [L125] state_17 = next_48_arg_1 [L126] state_43 = next_50_arg_1 VAL [bad_28_arg_0=0, init_10_arg_1=0, init_18_arg_1=0, init_44_arg_1=0, input_5=0, mask_SORT_12=4294967295, mask_SORT_1=1, mask_SORT_4=255, msb_SORT_12=2147483648, msb_SORT_1=1, msb_SORT_4=128, next_46_arg_1=0, next_48_arg_1=0, next_50_arg_1=1, state_17=0, state_43=1, state_9=0, var_11=0, var_11_arg_0=0, var_13=0, var_13_arg_0=0, var_14=1, var_15=0, var_15_arg_0=0, var_15_arg_1=1, var_16=255, var_16_arg_0=0, var_19=0, var_19_arg_0=0, var_20=0, var_20_arg_0=0, var_21=0, var_21_arg_0=0, var_21_arg_1=1, var_22=255, var_22_arg_0=255, var_22_arg_1=0, var_25=1, var_26=0, var_26_arg_0=255, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_42=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=0, var_47_arg_0=0, var_47_arg_1=0, var_47_arg_2=0, var_49=1, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=1, var_8=0] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_3 = __VERIFIER_nondet_uchar() [L66] input_5 = __VERIFIER_nondet_uchar() [L67] input_6 = __VERIFIER_nondet_uchar() [L68] input_7 = __VERIFIER_nondet_uchar() [L69] input_29 = __VERIFIER_nondet_uchar() [L70] input_31 = __VERIFIER_nondet_uchar() [L71] input_33 = __VERIFIER_nondet_uchar() [L72] input_35 = __VERIFIER_nondet_uchar() [L73] input_37 = __VERIFIER_nondet_uchar() [L74] input_39 = __VERIFIER_nondet_uchar() [L77] SORT_4 var_11_arg_0 = state_9; [L78] SORT_1 var_11 = var_11_arg_0 >> 7; [L79] SORT_1 var_13_arg_0 = var_11; [L80] EXPR var_13_arg_0 & mask_SORT_1 [L80] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L81] SORT_12 var_13 = var_13_arg_0; [L82] SORT_12 var_15_arg_0 = var_13; [L83] SORT_12 var_15_arg_1 = var_14; [L84] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L85] SORT_1 var_16_arg_0 = var_15; [L86] SORT_1 var_16 = ~var_16_arg_0; [L87] SORT_4 var_19_arg_0 = state_17; [L88] SORT_1 var_19 = var_19_arg_0 >> 7; [L89] SORT_1 var_20_arg_0 = var_19; [L90] EXPR var_20_arg_0 & mask_SORT_1 [L90] var_20_arg_0 = var_20_arg_0 & mask_SORT_1 [L91] SORT_12 var_20 = var_20_arg_0; [L92] SORT_12 var_21_arg_0 = var_20; [L93] SORT_12 var_21_arg_1 = var_14; [L94] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L95] SORT_1 var_22_arg_0 = var_16; [L96] SORT_1 var_22_arg_1 = var_21; [L97] EXPR var_22_arg_0 | var_22_arg_1 [L97] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L98] SORT_1 var_26_arg_0 = var_22; [L99] SORT_1 var_26 = ~var_26_arg_0; [L100] SORT_1 var_27_arg_0 = var_25; [L101] SORT_1 var_27_arg_1 = var_26; [L102] EXPR var_27_arg_0 & var_27_arg_1 [L102] SORT_1 var_27 = var_27_arg_0 & var_27_arg_1; [L103] EXPR var_27 & mask_SORT_1 [L103] var_27 = var_27 & mask_SORT_1 [L104] SORT_1 bad_28_arg_0 = var_27; [L105] CALL __VERIFIER_assert(!(bad_28_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L105] RET __VERIFIER_assert(!(bad_28_arg_0)) [L107] SORT_1 var_45_arg_0 = state_43; [L108] SORT_4 var_45_arg_1 = input_5; [L109] SORT_4 var_45_arg_2 = state_9; [L110] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L111] SORT_4 next_46_arg_1 = var_45; [L112] SORT_1 var_47_arg_0 = state_43; [L113] SORT_4 var_47_arg_1 = input_5; [L114] SORT_4 var_47_arg_2 = state_17; [L115] SORT_4 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L116] SORT_4 next_48_arg_1 = var_47; [L117] SORT_1 var_49_arg_0 = state_43; [L118] SORT_1 var_49_arg_1 = var_42; [L119] SORT_1 var_49_arg_2 = var_25; [L120] SORT_1 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L121] EXPR var_49 & mask_SORT_1 [L121] var_49 = var_49 & mask_SORT_1 [L122] SORT_1 next_50_arg_1 = var_49; [L124] state_9 = next_46_arg_1 [L125] state_17 = next_48_arg_1 [L126] state_43 = next_50_arg_1 VAL [bad_28_arg_0=0, init_10_arg_1=0, init_18_arg_1=0, init_44_arg_1=0, input_5=255, mask_SORT_12=4294967295, mask_SORT_1=1, mask_SORT_4=255, msb_SORT_12=2147483648, msb_SORT_1=1, msb_SORT_4=128, next_46_arg_1=255, next_48_arg_1=255, next_50_arg_1=0, state_17=255, state_43=0, state_9=255, var_11=0, var_11_arg_0=0, var_13=0, var_13_arg_0=0, var_14=1, var_15=0, var_15_arg_0=0, var_15_arg_1=1, var_16=255, var_16_arg_0=0, var_19=0, var_19_arg_0=0, var_20=0, var_20_arg_0=0, var_21=0, var_21_arg_0=0, var_21_arg_1=1, var_22=255, var_22_arg_0=255, var_22_arg_1=0, var_25=1, var_26=0, var_26_arg_0=255, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_42=0, var_45=255, var_45_arg_0=1, var_45_arg_1=255, var_45_arg_2=0, var_47=255, var_47_arg_0=1, var_47_arg_1=255, var_47_arg_2=0, var_49=0, var_49_arg_0=1, var_49_arg_1=0, var_49_arg_2=1, var_8=0] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_3 = __VERIFIER_nondet_uchar() [L66] input_5 = __VERIFIER_nondet_uchar() [L67] input_6 = __VERIFIER_nondet_uchar() [L68] input_7 = __VERIFIER_nondet_uchar() [L69] input_29 = __VERIFIER_nondet_uchar() [L70] input_31 = __VERIFIER_nondet_uchar() [L71] input_33 = __VERIFIER_nondet_uchar() [L72] input_35 = __VERIFIER_nondet_uchar() [L73] input_37 = __VERIFIER_nondet_uchar() [L74] input_39 = __VERIFIER_nondet_uchar() [L77] SORT_4 var_11_arg_0 = state_9; [L78] SORT_1 var_11 = var_11_arg_0 >> 7; [L79] SORT_1 var_13_arg_0 = var_11; [L80] EXPR var_13_arg_0 & mask_SORT_1 [L80] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L81] SORT_12 var_13 = var_13_arg_0; [L82] SORT_12 var_15_arg_0 = var_13; [L83] SORT_12 var_15_arg_1 = var_14; [L84] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L85] SORT_1 var_16_arg_0 = var_15; [L86] SORT_1 var_16 = ~var_16_arg_0; [L87] SORT_4 var_19_arg_0 = state_17; [L88] SORT_1 var_19 = var_19_arg_0 >> 7; [L89] SORT_1 var_20_arg_0 = var_19; [L90] EXPR var_20_arg_0 & mask_SORT_1 [L90] var_20_arg_0 = var_20_arg_0 & mask_SORT_1 [L91] SORT_12 var_20 = var_20_arg_0; [L92] SORT_12 var_21_arg_0 = var_20; [L93] SORT_12 var_21_arg_1 = var_14; [L94] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L95] SORT_1 var_22_arg_0 = var_16; [L96] SORT_1 var_22_arg_1 = var_21; [L97] EXPR var_22_arg_0 | var_22_arg_1 [L97] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L98] SORT_1 var_26_arg_0 = var_22; [L99] SORT_1 var_26 = ~var_26_arg_0; [L100] SORT_1 var_27_arg_0 = var_25; [L101] SORT_1 var_27_arg_1 = var_26; [L102] EXPR var_27_arg_0 & var_27_arg_1 [L102] SORT_1 var_27 = var_27_arg_0 & var_27_arg_1; [L103] EXPR var_27 & mask_SORT_1 [L103] var_27 = var_27 & mask_SORT_1 [L104] SORT_1 bad_28_arg_0 = var_27; [L105] CALL __VERIFIER_assert(!(bad_28_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: 667.4s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 705 SizeOfPredicates, 75 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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 [2023-12-02 17:24:37,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh --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 278b4de367ce9a5d90b72b56db7b4bfd32cdd3486043ecd2959c1028ac507b6e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:24:39,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:24:39,538 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 17:24:39,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:24:39,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:24:39,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:24:39,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:24:39,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:24:39,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:24:39,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:24:39,575 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:24:39,576 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:24:39,576 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:24:39,577 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:24:39,578 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:24:39,578 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:24:39,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:24:39,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:24:39,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:24:39,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:24:39,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:24:39,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:24:39,582 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:24:39,582 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:24:39,583 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:24:39,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:24:39,583 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:24:39,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:24:39,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:24:39,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:24:39,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:24:39,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:24:39,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:24:39,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:24:39,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:24:39,587 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:24:39,587 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:39,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:24:39,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:24:39,587 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:24:39,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:24:39,588 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_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278b4de367ce9a5d90b72b56db7b4bfd32cdd3486043ecd2959c1028ac507b6e [2023-12-02 17:24:39,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:24:39,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:24:39,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:24:39,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:24:39,905 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:24:39,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c [2023-12-02 17:24:42,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:24:42,916 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:24:42,917 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c [2023-12-02 17:24:42,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data/b1ac26ad0/6fefc1a7c04d4412a0b86c5e9d782acb/FLAG9a0ec0bd6 [2023-12-02 17:24:42,940 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/data/b1ac26ad0/6fefc1a7c04d4412a0b86c5e9d782acb [2023-12-02 17:24:42,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:24:42,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:24:42,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:24:42,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:24:42,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:24:42,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:42" (1/1) ... [2023-12-02 17:24:42,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc136e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:42, skipping insertion in model container [2023-12-02 17:24:42,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:42" (1/1) ... [2023-12-02 17:24:42,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:24:43,144 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_be0ce638-7968-415e-a418-c5e0cf9c6b43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c[1245,1258] [2023-12-02 17:24:43,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:24:43,200 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:24:43,214 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_be0ce638-7968-415e-a418-c5e0cf9c6b43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b04.c[1245,1258] [2023-12-02 17:24:43,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:24:43,252 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:24:43,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43 WrapperNode [2023-12-02 17:24:43,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:24:43,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:24:43,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:24:43,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:24:43,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,298 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 146 [2023-12-02 17:24:43,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:24:43,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:24:43,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:24:43,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:24:43,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:24:43,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:24:43,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:24:43,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:24:43,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (1/1) ... [2023-12-02 17:24:43,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:24:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:43,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:24:43,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:24:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:24:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:24:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:24:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:24:43,523 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:24:43,525 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:24:43,680 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:24:43,722 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:24:43,722 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:24:43,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:43 BoogieIcfgContainer [2023-12-02 17:24:43,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:24:43,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:24:43,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:24:43,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:24:43,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:24:42" (1/3) ... [2023-12-02 17:24:43,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70828324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:24:43, skipping insertion in model container [2023-12-02 17:24:43,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43" (2/3) ... [2023-12-02 17:24:43,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70828324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:24:43, skipping insertion in model container [2023-12-02 17:24:43,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:43" (3/3) ... [2023-12-02 17:24:43,732 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b04.c [2023-12-02 17:24:43,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:24:43,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:24:43,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:24:43,797 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;@6ae61d09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:24:43,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:24:43,801 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) [2023-12-02 17:24:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:24:43,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:43,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:24:43,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:24:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 17:24:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:43,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018754369] [2023-12-02 17:24:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:43,825 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 [2023-12-02 17:24:43,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:43,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:24:43,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:24:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:43,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 17:24:43,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:44,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:24:44,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018754369] [2023-12-02 17:24:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018754369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:24:44,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:24:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:24:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466117076] [2023-12-02 17:24:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:24:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:24:44,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:44,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:24:44,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:24:44,225 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) [2023-12-02 17:24:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:44,277 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 17:24:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:24:44,279 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 [2023-12-02 17:24:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:44,285 INFO L225 Difference]: With dead ends: 16 [2023-12-02 17:24:44,285 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 17:24:44,287 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 [2023-12-02 17:24:44,290 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 [2023-12-02 17:24:44,291 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] [2023-12-02 17:24:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 17:24:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 17:24:44,324 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) [2023-12-02 17:24:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 17:24:44,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 17:24:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:44,327 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 17:24:44,327 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) [2023-12-02 17:24:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 17:24:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:24:44,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:44,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 17:24:44,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:24:44,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:24:44,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:24:44,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 17:24:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344219559] [2023-12-02 17:24:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:44,533 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 [2023-12-02 17:24:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:44,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:24:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:24:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:44,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 17:24:44,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:44,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:45,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344219559] [2023-12-02 17:24:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344219559] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1756279780] [2023-12-02 17:24:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:45,160 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:24:45,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:24:45,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 17:24:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:45,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 17:24:45,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:45,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:45,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1756279780] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:45,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18509483] [2023-12-02 17:24:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:45,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:24:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:45,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:24:45,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:24:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:45,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 17:24:45,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:45,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:46,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18509483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:46,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:24:46,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 9 [2023-12-02 17:24:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140499765] [2023-12-02 17:24:46,225 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:24:46,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:24:46,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:24:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:24:46,227 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-12-02 17:24:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:46,318 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 17:24:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:24:46,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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 [2023-12-02 17:24:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:46,319 INFO L225 Difference]: With dead ends: 14 [2023-12-02 17:24:46,319 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 17:24:46,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:24:46,322 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:46,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:24:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 17:24:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 17:24:46,326 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) [2023-12-02 17:24:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 17:24:46,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 17:24:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:46,327 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 17:24:46,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-12-02 17:24:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 17:24:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:24:46,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:46,329 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 17:24:46,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 17:24:46,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:24:46,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-02 17:24:46,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:46,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:24:46,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 17:24:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:24:46,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615118611] [2023-12-02 17:24:46,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:24:46,933 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 [2023-12-02 17:24:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:24:46,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:24:46,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:24:47,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:24:47,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:24:47,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 17:24:47,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:47,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:47,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:24:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615118611] [2023-12-02 17:24:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615118611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:47,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1421057286] [2023-12-02 17:24:47,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:24:47,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:24:47,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:24:47,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 17:24:47,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:24:47,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:24:47,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 17:24:47,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:48,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1421057286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036115750] [2023-12-02 17:24:48,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:24:48,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:24:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:48,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:24:48,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:24:48,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:24:48,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:24:48,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-02 17:24:48,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:48,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:24:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036115750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:49,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:24:49,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 17:24:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74384588] [2023-12-02 17:24:49,156 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:24:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:24:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:24:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:24:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:24:49,158 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 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) [2023-12-02 17:24:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:49,327 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-12-02 17:24:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:24:49,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 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 [2023-12-02 17:24:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:49,328 INFO L225 Difference]: With dead ends: 12 [2023-12-02 17:24:49,329 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:24:49,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-02 17:24:49,331 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:49,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:24:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:24:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:24:49,333 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) [2023-12-02 17:24:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:24:49,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-12-02 17:24:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:49,334 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:24:49,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 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) [2023-12-02 17:24:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:24:49,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:24:49,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:24:49,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:24:49,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:24:49,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 17:24:49,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:24:49,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:24:49,979 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:24:49,979 INFO L895 garLoopResultBuilder]: At program point L62-2(lines 62 127) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (exists ((|ULTIMATE.start_main_~var_45_arg_1~0#1| (_ BitVec 8))) (let ((.cse0 ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_45_arg_1~0#1|)))) (and (= .cse0 |ULTIMATE.start_main_~state_17~0#1|) (= .cse0 |ULTIMATE.start_main_~state_9~0#1|)))) (= |ULTIMATE.start_main_~var_14~0#1| (_ bv1 32))) [2023-12-02 17:24:49,979 INFO L899 garLoopResultBuilder]: For program point L62-3(lines 62 127) no Hoare annotation was computed. [2023-12-02 17:24:49,980 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-02 17:24:49,980 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-12-02 17:24:49,980 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-12-02 17:24:49,980 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:24:49,980 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-12-02 17:24:49,983 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 17:24:49,985 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:24:49,995 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_45_arg_1~0#1 : bv8 :: ~zero_extend~32~8(ULTIMATE.start_main_~var_45_arg_1~0#1)[7:0] == ~state_17~0 && ~zero_extend~32~8(ULTIMATE.start_main_~var_45_arg_1~0#1)[7:0] == ~state_9~0) could not be translated [2023-12-02 17:24:49,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:24:49 BoogieIcfgContainer [2023-12-02 17:24:49,997 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:24:49,997 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:24:49,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:24:49,998 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:24:49,998 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:43" (3/4) ... [2023-12-02 17:24:50,000 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:24:50,008 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-12-02 17:24:50,009 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 17:24:50,009 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 17:24:50,009 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:24:50,010 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:24:50,088 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:24:50,088 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:24:50,089 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:24:50,089 INFO L158 Benchmark]: Toolchain (without parser) took 7144.90ms. Allocated memory was 86.0MB in the beginning and 182.5MB in the end (delta: 96.5MB). Free memory was 62.0MB in the beginning and 101.6MB in the end (delta: -39.6MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,090 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 34.8MB in the beginning and 34.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.53ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 49.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.30ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 46.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,091 INFO L158 Benchmark]: Boogie Preprocessor took 41.24ms. Allocated memory is still 86.0MB. Free memory was 46.8MB in the beginning and 45.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,092 INFO L158 Benchmark]: RCFGBuilder took 382.39ms. Allocated memory is still 86.0MB. Free memory was 45.3MB in the beginning and 50.2MB in the end (delta: -4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,092 INFO L158 Benchmark]: TraceAbstraction took 6270.90ms. Allocated memory was 86.0MB in the beginning and 182.5MB in the end (delta: 96.5MB). Free memory was 49.6MB in the beginning and 106.9MB in the end (delta: -57.3MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,092 INFO L158 Benchmark]: Witness Printer took 91.29ms. Allocated memory is still 182.5MB. Free memory was 106.9MB in the beginning and 101.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:24:50,094 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 34.8MB in the beginning and 34.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.53ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 49.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.30ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 46.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.24ms. Allocated memory is still 86.0MB. Free memory was 46.8MB in the beginning and 45.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.39ms. Allocated memory is still 86.0MB. Free memory was 45.3MB in the beginning and 50.2MB in the end (delta: -4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6270.90ms. Allocated memory was 86.0MB in the beginning and 182.5MB in the end (delta: 96.5MB). Free memory was 49.6MB in the beginning and 106.9MB in the end (delta: -57.3MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. * Witness Printer took 91.29ms. Allocated memory is still 182.5MB. Free memory was 106.9MB in the beginning and 101.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_45_arg_1~0#1 : bv8 :: ~zero_extend~32~8(ULTIMATE.start_main_~var_45_arg_1~0#1)[7:0] == ~state_17~0 && ~zero_extend~32~8(ULTIMATE.start_main_~var_45_arg_1~0#1)[7:0] == ~state_9~0) could not be translated * 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: 6.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 4 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 20, 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, 4 NumberOfFragments, 19 HoareAnnotationTreeSize, 1 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 93 ConstructedInterpolants, 36 QuantifiedInterpolants, 2490 SizeOfPredicates, 259 NumberOfNonLiveVariables, 869 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 0/54 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: 62]: Loop Invariant Derived loop invariant: ((1 == mask_SORT_1) && (var_14 == 1)) RESULT: Ultimate proved your program to be correct! [2023-12-02 17:24:50,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0ce638-7968-415e-a418-c5e0cf9c6b43/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE