./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire --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 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:15,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:15,181 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:34:15,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:15,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:15,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:15,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:15,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:15,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:15,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:15,260 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:15,261 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:15,262 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:15,263 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:15,264 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:15,264 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:15,265 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:15,265 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:15,265 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:15,266 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:15,266 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:15,267 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:15,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:15,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:15,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:15,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:15,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:15,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:15,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:15,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:15,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:15,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:15,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:15,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:15,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:15,285 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:15,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:15,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:15,286 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:15,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:15,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:15,287 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:15,287 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:15,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:15,288 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 [2023-11-23 20:34:15,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:15,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:15,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:15,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:15,621 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:15,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2023-11-23 20:34:18,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:19,150 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:19,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2023-11-23 20:34:19,165 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data/2c72d8aca/a5a989bd3778407b8738e9f5023d2be2/FLAG52a1511e3 [2023-11-23 20:34:19,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data/2c72d8aca/a5a989bd3778407b8738e9f5023d2be2 [2023-11-23 20:34:19,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:19,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:19,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:19,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:19,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:19,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28554a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19, skipping insertion in model container [2023-11-23 20:34:19,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:19,464 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2023-11-23 20:34:19,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:19,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:19,626 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2023-11-23 20:34:19,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:19,722 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:19,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19 WrapperNode [2023-11-23 20:34:19,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:19,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:19,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:19,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:19,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,801 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 381 [2023-11-23 20:34:19,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:19,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:19,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:19,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:19,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:19,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:19,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:19,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:19,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:19,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:19,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:19,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:34:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:20,087 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:20,090 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:20,816 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:21,407 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:21,407 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:34:21,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:21 BoogieIcfgContainer [2023-11-23 20:34:21,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:21,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:21,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:21,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:21,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:19" (1/3) ... [2023-11-23 20:34:21,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed03a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:21, skipping insertion in model container [2023-11-23 20:34:21,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (2/3) ... [2023-11-23 20:34:21,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed03a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:21, skipping insertion in model container [2023-11-23 20:34:21,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:21" (3/3) ... [2023-11-23 20:34:21,422 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul2.c [2023-11-23 20:34:21,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:21,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:21,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:21,510 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;@1c2c0874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:21,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:21,516 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) [2023-11-23 20:34:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:34:21,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:21,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:34:21,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:21,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash 12919328, now seen corresponding path program 1 times [2023-11-23 20:34:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:21,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298228808] [2023-11-23 20:34:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:21,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:34:22,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:34:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:34:22,199 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:34:22,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:34:22,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:34:22,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:34:22,214 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:34:22,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:34:22,260 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 20:34:22,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:34:22 BoogieIcfgContainer [2023-11-23 20:34:22,277 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:34:22,279 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:34:22,279 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:34:22,280 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:34:22,280 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:21" (3/4) ... [2023-11-23 20:34:22,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:34:22,285 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:34:22,287 INFO L158 Benchmark]: Toolchain (without parser) took 3103.45ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 88.4MB in the beginning and 98.5MB in the end (delta: -10.2MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2023-11-23 20:34:22,288 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 100.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:34:22,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.44ms. Allocated memory is still 134.2MB. Free memory was 87.9MB in the beginning and 73.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:34:22,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.03ms. Allocated memory is still 134.2MB. Free memory was 73.7MB in the beginning and 68.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:34:22,295 INFO L158 Benchmark]: Boogie Preprocessor took 63.38ms. Allocated memory is still 134.2MB. Free memory was 68.1MB in the beginning and 65.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:34:22,296 INFO L158 Benchmark]: RCFGBuilder took 1541.72ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 65.3MB in the beginning and 139.4MB in the end (delta: -74.1MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2023-11-23 20:34:22,298 INFO L158 Benchmark]: TraceAbstraction took 864.29ms. Allocated memory is still 190.8MB. Free memory was 139.4MB in the beginning and 99.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-23 20:34:22,299 INFO L158 Benchmark]: Witness Printer took 6.43ms. Allocated memory is still 190.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:34:22,307 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 100.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.44ms. Allocated memory is still 134.2MB. Free memory was 87.9MB in the beginning and 73.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.03ms. Allocated memory is still 134.2MB. Free memory was 73.7MB in the beginning and 68.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.38ms. Allocated memory is still 134.2MB. Free memory was 68.1MB in the beginning and 65.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1541.72ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 65.3MB in the beginning and 139.4MB in the end (delta: -74.1MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * TraceAbstraction took 864.29ms. Allocated memory is still 190.8MB. Free memory was 139.4MB in the beginning and 99.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 6.43ms. Allocated memory is still 190.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 22]: 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 bitwiseAnd at line 76. Possible FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 64); [L31] const SORT_5 msb_SORT_5 = (SORT_5)1 << (64 - 1); [L33] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 128); [L34] const SORT_9 msb_SORT_9 = (SORT_9)1 << (128 - 1); [L36] const SORT_9 var_10 = 0; [L37] const SORT_1 var_18 = 1; [L38] const SORT_5 var_22 = 0; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_1 input_4; [L43] SORT_5 input_6; [L44] SORT_5 input_7; [L45] SORT_1 input_8; [L47] EXPR __VERIFIER_nondet_uint128() & mask_SORT_9 [L47] SORT_9 state_11 = __VERIFIER_nondet_uint128() & mask_SORT_9; [L48] EXPR __VERIFIER_nondet_uint128() & mask_SORT_9 [L48] SORT_9 state_13 = __VERIFIER_nondet_uint128() & mask_SORT_9; [L49] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 [L49] SORT_5 state_23 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L50] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 [L50] SORT_5 state_25 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L51] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L52] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 [L53] SORT_5 state_31 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L54] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 [L54] SORT_5 state_33 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L56] SORT_9 init_12_arg_1 = var_10; [L57] state_11 = init_12_arg_1 [L58] SORT_9 init_14_arg_1 = var_10; [L59] state_13 = init_14_arg_1 [L60] SORT_5 init_24_arg_1 = var_22; [L61] state_23 = init_24_arg_1 [L62] SORT_5 init_26_arg_1 = var_22; [L63] state_25 = init_26_arg_1 [L64] SORT_1 init_28_arg_1 = var_18; [L65] state_27 = init_28_arg_1 [L66] SORT_1 init_30_arg_1 = var_18; [L67] state_29 = init_30_arg_1 [L68] SORT_5 init_32_arg_1 = var_22; [L69] state_31 = init_32_arg_1 [L70] SORT_5 init_34_arg_1 = var_22; [L71] state_33 = init_34_arg_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, mask_SORT_1=1, mask_SORT_5=18446744073709551615, mask_SORT_9=340282366920938463463374607431768211455, msb_SORT_1=1, msb_SORT_5=9223372036854775808, msb_SORT_9=170141183460469231731687303715884105728, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L74] input_2 = __VERIFIER_nondet_uchar() [L75] input_3 = __VERIFIER_nondet_uchar() [L76] EXPR input_3 & mask_SORT_1 [L76] input_3 = input_3 & mask_SORT_1 [L77] input_4 = __VERIFIER_nondet_uchar() [L78] EXPR input_4 & mask_SORT_1 [L78] input_4 = input_4 & mask_SORT_1 [L79] input_6 = __VERIFIER_nondet_ulong() [L80] input_7 = __VERIFIER_nondet_ulong() [L81] input_8 = __VERIFIER_nondet_uchar() [L82] EXPR input_8 & mask_SORT_1 [L82] input_8 = input_8 & mask_SORT_1 [L85] SORT_9 var_15_arg_0 = state_11; [L86] SORT_9 var_15_arg_1 = state_13; [L87] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L88] SORT_1 var_19_arg_0 = var_15; [L89] SORT_1 var_19 = ~var_19_arg_0; [L90] SORT_1 var_20_arg_0 = var_18; [L91] SORT_1 var_20_arg_1 = var_19; [L92] EXPR var_20_arg_0 & var_20_arg_1 [L92] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L93] EXPR var_20 & mask_SORT_1 [L93] var_20 = var_20 & mask_SORT_1 [L94] SORT_1 bad_21_arg_0 = var_20; [L95] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L22] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L22] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 0.4s 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 [2023-11-23 20:34:22,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire --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 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:25,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:25,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 20:34:25,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:25,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:25,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:25,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:25,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:25,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:25,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:25,390 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:25,390 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:25,390 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:25,392 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:25,393 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:25,393 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:25,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:25,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:25,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:25,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:25,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:25,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:25,398 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:34:25,398 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:34:25,398 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:34:25,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:25,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:25,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:25,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:34:25,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:25,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:25,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:25,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:25,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:25,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:25,403 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:34:25,403 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:34:25,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:25,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:25,405 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:25,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:25,405 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 [2023-11-23 20:34:25,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:25,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:25,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:25,860 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:25,861 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:25,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2023-11-23 20:34:29,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:29,395 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:29,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2023-11-23 20:34:29,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data/cfc5fdfca/c85bfb3241034cdb9a183b9699946d56/FLAG82c33d3e0 [2023-11-23 20:34:29,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/data/cfc5fdfca/c85bfb3241034cdb9a183b9699946d56 [2023-11-23 20:34:29,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:29,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:29,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:29,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:29,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:29,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:29,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104e4758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29, skipping insertion in model container [2023-11-23 20:34:29,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:29,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:29,682 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2023-11-23 20:34:29,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:29,812 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:29,831 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_49382708-f9a6-4ff3-87cf-5fc789dc92c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2023-11-23 20:34:29,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:29,916 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:29,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29 WrapperNode [2023-11-23 20:34:29,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:29,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:29,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:29,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:29,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:29,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,003 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 207 [2023-11-23 20:34:30,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:30,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:30,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:30,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:30,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:30,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:30,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:30,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:30,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (1/1) ... [2023-11-23 20:34:30,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:30,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:30,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:30,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:34:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:30,295 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:30,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:31,867 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:31,917 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:31,917 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:34:31,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:31 BoogieIcfgContainer [2023-11-23 20:34:31,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:31,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:31,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:31,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:31,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:29" (1/3) ... [2023-11-23 20:34:31,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449ad928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:31, skipping insertion in model container [2023-11-23 20:34:31,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:29" (2/3) ... [2023-11-23 20:34:31,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449ad928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:31, skipping insertion in model container [2023-11-23 20:34:31,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:31" (3/3) ... [2023-11-23 20:34:31,928 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul2.c [2023-11-23 20:34:31,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:31,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:31,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:32,004 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;@5b254b30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:32,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:32,011 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) [2023-11-23 20:34:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:34:32,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:32,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:34:32,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:32,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-23 20:34:32,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:32,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828067885] [2023-11-23 20:34:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:32,056 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 [2023-11-23 20:34:32,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:32,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:34:32,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:34:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:32,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 20:34:32,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:32,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:32,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828067885] [2023-11-23 20:34:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828067885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:32,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:32,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442906525] [2023-11-23 20:34:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:32,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:32,700 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) [2023-11-23 20:34:34,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:34:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:34,568 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-23 20:34:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:34,571 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 [2023-11-23 20:34:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:34,578 INFO L225 Difference]: With dead ends: 16 [2023-11-23 20:34:34,578 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 20:34:34,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:34,584 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:34,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 20:34:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 20:34:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-23 20:34:34,614 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) [2023-11-23 20:34:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 20:34:34,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 20:34:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:34,616 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 20:34:34,617 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) [2023-11-23 20:34:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 20:34:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:34:34,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:34,618 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 20:34:34,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 20:34:34,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:34:34,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:34,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-23 20:34:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345517063] [2023-11-23 20:34:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:34,822 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 [2023-11-23 20:34:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:34,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:34:34,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49382708-f9a6-4ff3-87cf-5fc789dc92c8/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:34:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:35,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 20:34:35,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:36,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:01,740 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse2 (forall ((|v_ULTIMATE.start_main_~var_20_arg_0~0#1_13| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_20_arg_0~0#1_13|) (_ bv254 32))))))))) (.cse6 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_8~0#1|))) (let ((.cse3 (forall ((|v_ULTIMATE.start_main_~var_20_arg_0~0#1_13| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_20_arg_0~0#1_13|) (_ bv255 32)))))) (_ bv0 8)))) (.cse4 (not .cse6)) (.cse5 (or .cse2 .cse6)) (.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_27~0#1|))) (and (or (forall ((|v_ULTIMATE.start_main_~var_44_arg_1~0#1_13| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse1 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_44_arg_1~0#1_13|)))))) (_ bv0 8))) (and (or (and (or .cse2 (forall ((|ULTIMATE.start_main_~mask_SORT_9~0#1| (_ BitVec 128)) (|v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| (_ BitVec 128)) (|v_ULTIMATE.start_main_~var_41_arg_0~0#1_14| (_ BitVec 64)) (|ULTIMATE.start_main_~mask_SORT_5~0#1| (_ BitVec 64))) (not (= (bvand (bvmul |v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| ((_ zero_extend 64) (bvand |c_ULTIMATE.start_main_~state_23~0#1| |ULTIMATE.start_main_~mask_SORT_5~0#1|))) |ULTIMATE.start_main_~mask_SORT_9~0#1|) (bvand |ULTIMATE.start_main_~mask_SORT_9~0#1| (bvmul ((_ zero_extend 64) |v_ULTIMATE.start_main_~var_41_arg_0~0#1_14|) ((_ zero_extend 64) (bvand |c_ULTIMATE.start_main_~state_33~0#1| |ULTIMATE.start_main_~mask_SORT_5~0#1|)))))))) (or (forall ((|ULTIMATE.start_main_~mask_SORT_9~0#1| (_ BitVec 128)) (|v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| (_ BitVec 128)) (|v_ULTIMATE.start_main_~var_41_arg_0~0#1_14| (_ BitVec 64)) (|ULTIMATE.start_main_~mask_SORT_5~0#1| (_ BitVec 64))) (= (bvand (bvmul |v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| ((_ zero_extend 64) (bvand |c_ULTIMATE.start_main_~state_23~0#1| |ULTIMATE.start_main_~mask_SORT_5~0#1|))) |ULTIMATE.start_main_~mask_SORT_9~0#1|) (bvand |ULTIMATE.start_main_~mask_SORT_9~0#1| (bvmul ((_ zero_extend 64) |v_ULTIMATE.start_main_~var_41_arg_0~0#1_14|) ((_ zero_extend 64) (bvand |c_ULTIMATE.start_main_~state_33~0#1| |ULTIMATE.start_main_~mask_SORT_5~0#1|)))))) .cse3)) .cse4) .cse5)) (or (and (or (and (or .cse2 (forall ((|ULTIMATE.start_main_~mask_SORT_9~0#1| (_ BitVec 128)) (|v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| (_ BitVec 128)) (|ULTIMATE.start_main_~mask_SORT_5~0#1| (_ BitVec 64)) (|v_ULTIMATE.start_main_~var_45~0#1_13| (_ BitVec 128))) (not (= (bvand (bvmul |v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| ((_ zero_extend 64) (bvand |c_ULTIMATE.start_main_~state_23~0#1| |ULTIMATE.start_main_~mask_SORT_5~0#1|))) |ULTIMATE.start_main_~mask_SORT_9~0#1|) (bvand |ULTIMATE.start_main_~mask_SORT_9~0#1| |v_ULTIMATE.start_main_~var_45~0#1_13|))))) (or (forall ((|ULTIMATE.start_main_~mask_SORT_9~0#1| (_ BitVec 128)) (|v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| (_ BitVec 128)) (|ULTIMATE.start_main_~mask_SORT_5~0#1| (_ BitVec 64)) (|v_ULTIMATE.start_main_~var_45~0#1_13| (_ BitVec 128))) (= (bvand (bvmul |v_ULTIMATE.start_main_~var_38_arg_1~0#1_13| ((_ zero_extend 64) (bvand |c_ULTIMATE.start_main_~state_23~0#1| |ULTIMATE.start_main_~mask_SORT_5~0#1|))) |ULTIMATE.start_main_~mask_SORT_9~0#1|) (bvand |ULTIMATE.start_main_~mask_SORT_9~0#1| |v_ULTIMATE.start_main_~var_45~0#1_13|))) .cse3)) .cse4) .cse5) (forall ((|v_ULTIMATE.start_main_~var_44_arg_1~0#1_13| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse1 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_44_arg_1~0#1_13|)))))) (_ bv0 8))))))))) is different from true