./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:54,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:54,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:56:54,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:54,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:54,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:54,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:54,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:54,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:54,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:54,583 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:54,584 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:54,585 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:54,586 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:54,587 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:54,587 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:54,588 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:54,588 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:54,589 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:54,589 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:54,589 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:54,590 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:54,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:54,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:54,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:54,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:54,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:54,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:54,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:54,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:54,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:54,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:54,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:54,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:54,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:54,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:54,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:54,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:54,604 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:54,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:54,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:54,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:54,605 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:54,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:54,606 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_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec [2023-11-24 23:56:54,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:54,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:54,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:54,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:54,996 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:54,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-24 23:56:58,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:58,404 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:58,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-24 23:56:58,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data/4619d4624/d2b6bdd976904cb0b9abe51aeb6c03ed/FLAG5b481f169 [2023-11-24 23:56:58,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data/4619d4624/d2b6bdd976904cb0b9abe51aeb6c03ed [2023-11-24 23:56:58,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:58,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:58,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:58,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:58,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:58,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:58" (1/1) ... [2023-11-24 23:56:58,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea2cdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:58, skipping insertion in model container [2023-11-24 23:56:58,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:58" (1/1) ... [2023-11-24 23:56:58,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:58,730 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_c411fcda-d049-441a-a8a9-0d836ddde8a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-24 23:56:59,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:59,077 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:59,091 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_c411fcda-d049-441a-a8a9-0d836ddde8a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-24 23:56:59,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:59,321 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:59,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59 WrapperNode [2023-11-24 23:56:59,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:59,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:59,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:59,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:59,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,647 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2540 [2023-11-24 23:56:59,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:59,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:59,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:59,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:59,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:59,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:59,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:59,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:59,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (1/1) ... [2023-11-24 23:56:59,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:00,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:57:00,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:57:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:57:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:57:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:57:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:57:00,411 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:57:00,413 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:57:02,791 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:57:07,650 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:57:07,651 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:57:07,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:07 BoogieIcfgContainer [2023-11-24 23:57:07,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:57:07,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:57:07,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:57:07,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:57:07,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:58" (1/3) ... [2023-11-24 23:57:07,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e83cca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:07, skipping insertion in model container [2023-11-24 23:57:07,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:59" (2/3) ... [2023-11-24 23:57:07,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e83cca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:07, skipping insertion in model container [2023-11-24 23:57:07,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:07" (3/3) ... [2023-11-24 23:57:07,662 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal2.c [2023-11-24 23:57:07,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:57:07,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:57:07,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:57:07,753 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;@33b08f32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:57:07,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:57:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:57:07,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:07,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:57:07,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:07,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash 67864109, now seen corresponding path program 1 times [2023-11-24 23:57:07,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:07,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597177832] [2023-11-24 23:57:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:57:08,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:57:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:57:09,036 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:57:09,038 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:57:09,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:57:09,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:57:09,048 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:57:09,055 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:57:09,128 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-24 23:57:09,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:57:09 BoogieIcfgContainer [2023-11-24 23:57:09,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:57:09,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:57:09,163 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:57:09,163 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:57:09,164 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:07" (3/4) ... [2023-11-24 23:57:09,168 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:57:09,170 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:57:09,171 INFO L158 Benchmark]: Toolchain (without parser) took 10731.33ms. Allocated memory was 165.7MB in the beginning and 555.7MB in the end (delta: 390.1MB). Free memory was 133.4MB in the beginning and 247.8MB in the end (delta: -114.4MB). Peak memory consumption was 279.0MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,172 INFO L158 Benchmark]: CDTParser took 1.28ms. Allocated memory is still 125.8MB. Free memory was 99.3MB in the beginning and 99.2MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:57:09,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 881.33ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 87.4MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,174 INFO L158 Benchmark]: Boogie Procedure Inliner took 324.46ms. Allocated memory is still 165.7MB. Free memory was 86.9MB in the beginning and 99.7MB in the end (delta: -12.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,180 INFO L158 Benchmark]: Boogie Preprocessor took 316.90ms. Allocated memory is still 165.7MB. Free memory was 99.7MB in the beginning and 97.2MB in the end (delta: 2.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,181 INFO L158 Benchmark]: RCFGBuilder took 7686.97ms. Allocated memory was 165.7MB in the beginning and 555.7MB in the end (delta: 390.1MB). Free memory was 97.2MB in the beginning and 352.6MB in the end (delta: -255.5MB). Peak memory consumption was 260.2MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,183 INFO L158 Benchmark]: TraceAbstraction took 1505.63ms. Allocated memory is still 555.7MB. Free memory was 352.6MB in the beginning and 247.8MB in the end (delta: 104.9MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,184 INFO L158 Benchmark]: Witness Printer took 7.03ms. Allocated memory is still 555.7MB. Free memory was 247.8MB in the beginning and 247.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:57:09,192 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28ms. Allocated memory is still 125.8MB. Free memory was 99.3MB in the beginning and 99.2MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 881.33ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 87.4MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 324.46ms. Allocated memory is still 165.7MB. Free memory was 86.9MB in the beginning and 99.7MB in the end (delta: -12.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 316.90ms. Allocated memory is still 165.7MB. Free memory was 99.7MB in the beginning and 97.2MB in the end (delta: 2.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * RCFGBuilder took 7686.97ms. Allocated memory was 165.7MB in the beginning and 555.7MB in the end (delta: 390.1MB). Free memory was 97.2MB in the beginning and 352.6MB in the end (delta: -255.5MB). Peak memory consumption was 260.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1505.63ms. Allocated memory is still 555.7MB. Free memory was 352.6MB in the beginning and 247.8MB in the end (delta: 104.9MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. * Witness Printer took 7.03ms. Allocated memory is still 555.7MB. Free memory was 247.8MB in the beginning and 247.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 270, overapproximation of bitwiseAnd at line 199. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 32); [L30] const SORT_6 msb_SORT_6 = (SORT_6)1 << (32 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L35] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 64); [L36] const SORT_14 msb_SORT_14 = (SORT_14)1 << (64 - 1); [L38] const SORT_121 mask_SORT_121 = (SORT_121)-1 >> (sizeof(SORT_121) * 8 - 2); [L39] const SORT_121 msb_SORT_121 = (SORT_121)1 << (2 - 1); [L41] const SORT_1 var_56 = 0; [L42] const SORT_6 var_60 = 0; [L43] const SORT_1 var_73 = 1; [L44] const SORT_14 var_77 = 0; [L45] const SORT_10 var_107 = 0; [L46] const SORT_10 var_116 = 2; [L47] const SORT_10 var_119 = 4; [L48] const SORT_10 var_126 = 1; [L49] const SORT_121 var_133 = 1; [L50] const SORT_121 var_136 = 3; [L51] const SORT_121 var_139 = 2; [L53] SORT_1 input_2; [L54] SORT_1 input_3; [L55] SORT_1 input_4; [L56] SORT_1 input_5; [L57] SORT_6 input_7; [L58] SORT_6 input_8; [L59] SORT_1 input_9; [L60] SORT_10 input_11; [L61] SORT_1 input_12; [L62] SORT_1 input_13; [L63] SORT_14 input_15; [L64] SORT_10 input_16; [L65] SORT_1 input_17; [L66] SORT_6 input_18; [L67] SORT_1 input_19; [L68] SORT_10 input_20; [L69] SORT_10 input_21; [L70] SORT_6 input_22; [L71] SORT_6 input_23; [L72] SORT_1 input_24; [L73] SORT_14 input_25; [L74] SORT_10 input_26; [L75] SORT_1 input_27; [L76] SORT_6 input_28; [L77] SORT_6 input_29; [L78] SORT_6 input_30; [L79] SORT_6 input_31; [L80] SORT_10 input_32; [L81] SORT_10 input_33; [L82] SORT_10 input_34; [L83] SORT_10 input_35; [L84] SORT_10 input_36; [L85] SORT_10 input_37; [L86] SORT_10 input_38; [L87] SORT_10 input_39; [L88] SORT_1 input_40; [L89] SORT_1 input_41; [L90] SORT_1 input_42; [L91] SORT_1 input_43; [L92] SORT_1 input_44; [L93] SORT_1 input_45; [L94] SORT_14 input_46; [L95] SORT_14 input_47; [L96] SORT_14 input_48; [L97] SORT_14 input_49; [L98] SORT_6 input_50; [L99] SORT_6 input_51; [L100] SORT_1 input_52; [L101] SORT_1 input_53; [L102] SORT_1 input_54; [L103] SORT_1 input_55; [L105] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L105] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L106] SORT_6 state_61 = __VERIFIER_nondet_uint() & mask_SORT_6; [L107] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L107] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L108] SORT_6 state_66 = __VERIFIER_nondet_uint() & mask_SORT_6; [L109] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L109] SORT_14 state_78 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L110] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L110] SORT_14 state_81 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L111] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L111] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L112] SORT_6 state_90 = __VERIFIER_nondet_uint() & mask_SORT_6; [L113] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L113] SORT_6 state_96 = __VERIFIER_nondet_uint() & mask_SORT_6; [L114] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L114] SORT_10 state_108 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L115] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L115] SORT_10 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L116] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L116] SORT_1 state_145 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L117] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L118] SORT_10 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L119] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L119] SORT_10 state_156 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L120] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L120] SORT_1 state_171 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L121] SORT_1 state_174 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L122] SORT_14 state_213 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L123] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L123] SORT_14 state_216 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L124] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L124] SORT_1 state_219 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L125] SORT_10 state_222 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L126] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L126] SORT_1 state_227 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L127] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L127] SORT_6 state_234 = __VERIFIER_nondet_uint() & mask_SORT_6; [L128] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L128] SORT_1 state_237 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L129] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L129] SORT_10 state_242 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L130] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L130] SORT_6 state_263 = __VERIFIER_nondet_uint() & mask_SORT_6; [L131] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L131] SORT_10 state_274 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L132] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L132] SORT_1 state_302 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L133] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L133] SORT_10 state_307 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L134] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L134] SORT_1 state_323 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L136] SORT_1 init_58_arg_1 = var_56; [L137] state_57 = init_58_arg_1 [L138] SORT_6 init_62_arg_1 = var_60; [L139] state_61 = init_62_arg_1 [L140] SORT_1 init_64_arg_1 = var_56; [L141] state_63 = init_64_arg_1 [L142] SORT_6 init_67_arg_1 = var_60; [L143] state_66 = init_67_arg_1 [L144] SORT_14 init_79_arg_1 = var_77; [L145] state_78 = init_79_arg_1 [L146] SORT_14 init_82_arg_1 = var_77; [L147] state_81 = init_82_arg_1 [L148] SORT_1 init_85_arg_1 = var_56; [L149] state_84 = init_85_arg_1 [L150] SORT_6 init_91_arg_1 = var_60; [L151] state_90 = init_91_arg_1 [L152] SORT_6 init_97_arg_1 = var_60; [L153] state_96 = init_97_arg_1 [L154] SORT_10 init_109_arg_1 = var_107; [L155] state_108 = init_109_arg_1 [L156] SORT_10 init_112_arg_1 = var_107; [L157] state_111 = init_112_arg_1 [L158] SORT_1 init_146_arg_1 = var_56; [L159] state_145 = init_146_arg_1 [L160] SORT_1 init_149_arg_1 = var_56; [L161] state_148 = init_149_arg_1 [L162] SORT_10 init_154_arg_1 = var_107; [L163] state_153 = init_154_arg_1 [L164] SORT_10 init_157_arg_1 = var_107; [L165] state_156 = init_157_arg_1 [L166] SORT_1 init_172_arg_1 = var_56; [L167] state_171 = init_172_arg_1 [L168] SORT_1 init_175_arg_1 = var_56; [L169] state_174 = init_175_arg_1 [L170] SORT_14 init_214_arg_1 = var_77; [L171] state_213 = init_214_arg_1 [L172] SORT_14 init_217_arg_1 = var_77; [L173] state_216 = init_217_arg_1 [L174] SORT_1 init_220_arg_1 = var_56; [L175] state_219 = init_220_arg_1 [L176] SORT_10 init_223_arg_1 = var_107; [L177] state_222 = init_223_arg_1 [L178] SORT_1 init_228_arg_1 = var_56; [L179] state_227 = init_228_arg_1 [L180] SORT_6 init_235_arg_1 = var_60; [L181] state_234 = init_235_arg_1 [L182] SORT_1 init_238_arg_1 = var_56; [L183] state_237 = init_238_arg_1 [L184] SORT_10 init_243_arg_1 = var_107; [L185] state_242 = init_243_arg_1 [L186] SORT_6 init_264_arg_1 = var_60; [L187] state_263 = init_264_arg_1 [L188] SORT_10 init_275_arg_1 = var_107; [L189] state_274 = init_275_arg_1 [L190] SORT_1 init_303_arg_1 = var_56; [L191] state_302 = init_303_arg_1 [L192] SORT_10 init_308_arg_1 = var_107; [L193] state_307 = init_308_arg_1 [L194] SORT_1 init_324_arg_1 = var_56; [L195] state_323 = init_324_arg_1 VAL [init_109_arg_1=0, init_112_arg_1=0, init_146_arg_1=0, init_149_arg_1=0, init_154_arg_1=0, init_157_arg_1=0, init_172_arg_1=0, init_175_arg_1=0, init_214_arg_1=0, init_217_arg_1=0, init_220_arg_1=0, init_223_arg_1=0, init_228_arg_1=0, init_235_arg_1=0, init_238_arg_1=0, init_243_arg_1=0, init_264_arg_1=0, init_275_arg_1=0, init_303_arg_1=0, init_308_arg_1=0, init_324_arg_1=0, init_58_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_67_arg_1=0, init_79_arg_1=0, init_82_arg_1=0, init_85_arg_1=0, init_91_arg_1=0, init_97_arg_1=0, mask_SORT_10=15, mask_SORT_121=3, mask_SORT_14=18446744073709551615, mask_SORT_1=1, mask_SORT_6=4294967295, msb_SORT_10=8, msb_SORT_121=2, msb_SORT_14=9223372036854775808, msb_SORT_1=1, msb_SORT_6=2147483648, state_108=0, state_111=0, state_145=0, state_148=0, state_153=0, state_156=0, state_171=0, state_174=0, state_213=0, state_216=0, state_219=0, state_222=0, state_227=0, state_234=0, state_237=0, state_242=0, state_263=0, state_274=0, state_302=0, state_307=0, state_323=0, state_57=0, state_61=0, state_63=0, state_66=0, state_78=0, state_81=0, state_84=0, state_90=0, state_96=0, var_107=0, var_116=2, var_119=4, var_126=1, var_133=1, var_136=3, var_139=2, var_56=0, var_60=0, var_73=1, var_77=0] [L198] input_2 = __VERIFIER_nondet_uchar() [L199] EXPR input_2 & mask_SORT_1 [L199] input_2 = input_2 & mask_SORT_1 [L200] input_3 = __VERIFIER_nondet_uchar() [L201] input_4 = __VERIFIER_nondet_uchar() [L202] input_5 = __VERIFIER_nondet_uchar() [L203] input_7 = __VERIFIER_nondet_uint() [L204] input_8 = __VERIFIER_nondet_uint() [L205] input_9 = __VERIFIER_nondet_uchar() [L206] EXPR input_9 & mask_SORT_1 [L206] input_9 = input_9 & mask_SORT_1 [L207] input_11 = __VERIFIER_nondet_uchar() [L208] input_12 = __VERIFIER_nondet_uchar() [L209] input_13 = __VERIFIER_nondet_uchar() [L210] input_15 = __VERIFIER_nondet_ulong() [L211] input_16 = __VERIFIER_nondet_uchar() [L212] input_17 = __VERIFIER_nondet_uchar() [L213] input_18 = __VERIFIER_nondet_uint() [L214] input_19 = __VERIFIER_nondet_uchar() [L215] input_20 = __VERIFIER_nondet_uchar() [L216] input_21 = __VERIFIER_nondet_uchar() [L217] input_22 = __VERIFIER_nondet_uint() [L218] input_23 = __VERIFIER_nondet_uint() [L219] input_24 = __VERIFIER_nondet_uchar() [L220] input_25 = __VERIFIER_nondet_ulong() [L221] input_26 = __VERIFIER_nondet_uchar() [L222] input_27 = __VERIFIER_nondet_uchar() [L223] input_28 = __VERIFIER_nondet_uint() [L224] input_29 = __VERIFIER_nondet_uint() [L225] input_30 = __VERIFIER_nondet_uint() [L226] input_31 = __VERIFIER_nondet_uint() [L227] input_32 = __VERIFIER_nondet_uchar() [L228] input_33 = __VERIFIER_nondet_uchar() [L229] input_34 = __VERIFIER_nondet_uchar() [L230] input_35 = __VERIFIER_nondet_uchar() [L231] input_36 = __VERIFIER_nondet_uchar() [L232] input_37 = __VERIFIER_nondet_uchar() [L233] input_38 = __VERIFIER_nondet_uchar() [L234] input_39 = __VERIFIER_nondet_uchar() [L235] input_40 = __VERIFIER_nondet_uchar() [L236] input_41 = __VERIFIER_nondet_uchar() [L237] input_42 = __VERIFIER_nondet_uchar() [L238] input_43 = __VERIFIER_nondet_uchar() [L239] input_44 = __VERIFIER_nondet_uchar() [L240] input_45 = __VERIFIER_nondet_uchar() [L241] input_46 = __VERIFIER_nondet_ulong() [L242] input_47 = __VERIFIER_nondet_ulong() [L243] input_48 = __VERIFIER_nondet_ulong() [L244] input_49 = __VERIFIER_nondet_ulong() [L245] input_50 = __VERIFIER_nondet_uint() [L246] input_51 = __VERIFIER_nondet_uint() [L247] input_52 = __VERIFIER_nondet_uchar() [L248] input_53 = __VERIFIER_nondet_uchar() [L249] input_54 = __VERIFIER_nondet_uchar() [L250] input_55 = __VERIFIER_nondet_uchar() [L253] SORT_1 var_59_arg_0 = state_57; [L254] SORT_1 var_59 = ~var_59_arg_0; [L255] SORT_1 var_65_arg_0 = state_63; [L256] SORT_6 var_65_arg_1 = state_61; [L257] SORT_6 var_65_arg_2 = input_18; [L258] SORT_6 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L259] EXPR var_65 & mask_SORT_6 [L259] var_65 = var_65 & mask_SORT_6 [L260] SORT_1 var_68_arg_0 = state_63; [L261] SORT_6 var_68_arg_1 = state_66; [L262] SORT_6 var_68_arg_2 = input_18; [L263] SORT_6 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L264] EXPR var_68 & mask_SORT_6 [L264] var_68 = var_68 & mask_SORT_6 [L265] SORT_6 var_69_arg_0 = var_65; [L266] SORT_6 var_69_arg_1 = var_68; [L267] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L268] SORT_1 var_70_arg_0 = var_59; [L269] SORT_1 var_70_arg_1 = var_69; [L270] EXPR var_70_arg_0 | var_70_arg_1 [L270] SORT_1 var_70 = var_70_arg_0 | var_70_arg_1; [L271] SORT_1 var_74_arg_0 = var_70; [L272] SORT_1 var_74 = ~var_74_arg_0; [L273] SORT_1 var_75_arg_0 = var_73; [L274] SORT_1 var_75_arg_1 = var_74; [L275] EXPR var_75_arg_0 & var_75_arg_1 [L275] SORT_1 var_75 = var_75_arg_0 & var_75_arg_1; [L276] EXPR var_75 & mask_SORT_1 [L276] var_75 = var_75 & mask_SORT_1 [L277] SORT_1 bad_76_arg_0 = var_75; [L278] CALL __VERIFIER_assert(!(bad_76_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: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:57:09,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:57:11,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:57:12,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-24 23:57:12,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:57:12,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:57:12,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:57:12,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:57:12,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:57:12,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:57:12,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:57:12,137 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:57:12,137 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:57:12,138 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:57:12,139 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:57:12,139 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:57:12,140 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:57:12,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:57:12,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:57:12,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:57:12,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:57:12,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:57:12,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:57:12,145 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:57:12,145 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:57:12,146 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:57:12,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:57:12,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:57:12,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:57:12,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:57:12,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:57:12,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:57:12,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:57:12,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:57:12,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:57:12,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:57:12,151 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:57:12,151 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:57:12,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:57:12,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:57:12,152 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:57:12,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:57:12,153 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_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec [2023-11-24 23:57:12,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:57:12,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:57:12,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:57:12,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:57:12,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:57:12,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-24 23:57:15,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:57:16,283 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:57:16,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-24 23:57:16,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data/b835784fe/8363e642d50044b78c0edec067388e79/FLAG887a6b56a [2023-11-24 23:57:16,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/data/b835784fe/8363e642d50044b78c0edec067388e79 [2023-11-24 23:57:16,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:57:16,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:57:16,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:57:16,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:57:16,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:57:16,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:57:16" (1/1) ... [2023-11-24 23:57:16,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7873bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:16, skipping insertion in model container [2023-11-24 23:57:16,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:57:16" (1/1) ... [2023-11-24 23:57:16,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:57:16,662 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_c411fcda-d049-441a-a8a9-0d836ddde8a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-24 23:57:16,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:57:16,989 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:57:17,002 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_c411fcda-d049-441a-a8a9-0d836ddde8a9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-24 23:57:17,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:57:17,160 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:57:17,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17 WrapperNode [2023-11-24 23:57:17,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:57:17,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:57:17,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:57:17,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:57:17,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,346 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1330 [2023-11-24 23:57:17,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:57:17,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:57:17,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:57:17,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:57:17,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:57:17,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:57:17,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:57:17,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:57:17,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:57:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:17,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:57:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:57:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:57:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:57:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:57:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:57:17,919 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:57:17,922 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:57:20,081 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:57:20,179 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:57:20,179 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:57:20,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:20 BoogieIcfgContainer [2023-11-24 23:57:20,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:57:20,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:57:20,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:57:20,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:57:20,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:57:16" (1/3) ... [2023-11-24 23:57:20,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3216c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:20, skipping insertion in model container [2023-11-24 23:57:20,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17" (2/3) ... [2023-11-24 23:57:20,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3216c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:20, skipping insertion in model container [2023-11-24 23:57:20,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:20" (3/3) ... [2023-11-24 23:57:20,194 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal2.c [2023-11-24 23:57:20,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:57:20,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:57:20,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:57:20,288 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;@69fd5583, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:57:20,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:57:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:57:20,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:20,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:57:20,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:20,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-24 23:57:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:57:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295096146] [2023-11-24 23:57:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:20,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:57:20,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:57:20,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:57:20,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:57:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:20,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 23:57:20,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:21,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:21,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:57:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295096146] [2023-11-24 23:57:21,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295096146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:21,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:21,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:57:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894222599] [2023-11-24 23:57:21,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:21,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:57:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:57:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:57:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:57:21,061 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:21,487 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-24 23:57:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:57:21,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:57:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:21,496 INFO L225 Difference]: With dead ends: 16 [2023-11-24 23:57:21,496 INFO L226 Difference]: Without dead ends: 9 [2023-11-24 23:57:21,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:21,503 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:21,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:57:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-24 23:57:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-24 23:57:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-24 23:57:21,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-24 23:57:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:21,537 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-24 23:57:21,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-24 23:57:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:57:21,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:21,538 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:57:21,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:21,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:57:21,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:21,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-24 23:57:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:57:21,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954724172] [2023-11-24 23:57:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:57:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:57:21,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:57:21,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 23:57:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:22,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-24 23:57:22,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:23,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:24,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:57:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954724172] [2023-11-24 23:57:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954724172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1472157414] [2023-11-24 23:57:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:24,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:57:24,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:57:24,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:57:24,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-24 23:57:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:25,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-24 23:57:25,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:25,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1472157414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089639476] [2023-11-24 23:57:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:26,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:26,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:26,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:26,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:57:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:27,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-24 23:57:27,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:28,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089639476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:29,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:57:29,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 14 [2023-11-24 23:57:29,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162349645] [2023-11-24 23:57:29,370 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:57:29,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 23:57:29,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:57:29,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 23:57:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:57:29,374 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:30,410 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-24 23:57:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:57:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:57:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:30,412 INFO L225 Difference]: With dead ends: 14 [2023-11-24 23:57:30,412 INFO L226 Difference]: Without dead ends: 12 [2023-11-24 23:57:30,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:57:30,415 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:30,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:57:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-24 23:57:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-24 23:57:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-24 23:57:30,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-24 23:57:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:30,422 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-24 23:57:30,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:30,423 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-24 23:57:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:57:30,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:30,423 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-24 23:57:30,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 23:57:30,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:30,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-24 23:57:31,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-24 23:57:31,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:57:31,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-24 23:57:31,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:57:31,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107663555] [2023-11-24 23:57:31,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:57:31,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:57:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:57:31,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:57:31,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411fcda-d049-441a-a8a9-0d836ddde8a9/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 23:57:34,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:57:34,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:57:34,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 498 conjunts are in the unsatisfiable core [2023-11-24 23:57:34,697 INFO L285 TraceCheckSpWp]: Computing forward predicates...