./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.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_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/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_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/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_b6494352-d9e5-49b9-ab14-b054d92513bd/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 a17878a5128bf705eaf3e8cc839ad0f7d5b7dcfdf1e66ee241171f7fff28965b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:01:49,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:01:49,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:01:49,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:01:49,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:01:49,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:01:49,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:01:49,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:01:49,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:01:49,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:01:49,573 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:01:49,574 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:01:49,574 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:01:49,574 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:01:49,575 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:01:49,575 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:01:49,576 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:01:49,576 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:01:49,576 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:01:49,577 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:01:49,577 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:01:49,580 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:01:49,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:01:49,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:01:49,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:01:49,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:01:49,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:01:49,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:01:49,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:01:49,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:01:49,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:01:49,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:01:49,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:01:49,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:01:49,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:01:49,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:01:49,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:01:49,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:01:49,589 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:01:49,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:01:49,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:01:49,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:01:49,592 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:01:49,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:01:49,593 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_b6494352-d9e5-49b9-ab14-b054d92513bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17878a5128bf705eaf3e8cc839ad0f7d5b7dcfdf1e66ee241171f7fff28965b [2023-11-25 00:01:49,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:01:49,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:01:49,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:01:49,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:01:49,897 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:01:49,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2023-11-25 00:01:53,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:01:53,406 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:01:53,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2023-11-25 00:01:53,423 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data/940a75b3e/0095b9135c6d44e08dcf7144f27b5859/FLAGb3316bee5 [2023-11-25 00:01:53,446 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data/940a75b3e/0095b9135c6d44e08dcf7144f27b5859 [2023-11-25 00:01:53,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:01:53,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:01:53,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:01:53,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:01:53,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:01:53,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:53,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6950e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53, skipping insertion in model container [2023-11-25 00:01:53,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:53,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:01:53,700 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_b6494352-d9e5-49b9-ab14-b054d92513bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1244,1257] [2023-11-25 00:01:53,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:01:53,828 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:01:53,842 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_b6494352-d9e5-49b9-ab14-b054d92513bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1244,1257] [2023-11-25 00:01:53,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:01:53,918 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:01:53,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53 WrapperNode [2023-11-25 00:01:53,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:01:53,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:01:53,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:01:53,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:01:53,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:53,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,032 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 673 [2023-11-25 00:01:54,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:01:54,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:01:54,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:01:54,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:01:54,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:01:54,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:01:54,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:01:54,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:01:54,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (1/1) ... [2023-11-25 00:01:54,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:01:54,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:01:54,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:01:54,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:01:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:01:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:01:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:01:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:01:54,397 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:01:54,399 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:01:55,347 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:01:56,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:01:56,338 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:01:56,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:01:56 BoogieIcfgContainer [2023-11-25 00:01:56,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:01:56,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:01:56,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:01:56,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:01:56,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:01:53" (1/3) ... [2023-11-25 00:01:56,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f7153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:01:56, skipping insertion in model container [2023-11-25 00:01:56,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:01:53" (2/3) ... [2023-11-25 00:01:56,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f7153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:01:56, skipping insertion in model container [2023-11-25 00:01:56,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:01:56" (3/3) ... [2023-11-25 00:01:56,349 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul4.c [2023-11-25 00:01:56,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:01:56,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:01:56,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:01:56,430 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;@398df231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:01:56,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:01:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:01:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:01:56,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:01:56,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:01:56,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:01:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:01:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash 24419416, now seen corresponding path program 1 times [2023-11-25 00:01:56,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:01:56,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734618698] [2023-11-25 00:01:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:01:56,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:01:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:01:57,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:01:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:01:57,667 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:01:57,669 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:01:57,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:01:57,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:01:57,682 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:01:57,690 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:01:57,737 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-25 00:01:57,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:01:57 BoogieIcfgContainer [2023-11-25 00:01:57,763 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:01:57,765 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:01:57,765 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:01:57,766 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:01:57,766 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:01:56" (3/4) ... [2023-11-25 00:01:57,770 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:01:57,772 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:01:57,773 INFO L158 Benchmark]: Toolchain (without parser) took 4322.42ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 140.8MB in the beginning and 68.9MB in the end (delta: 71.9MB). Peak memory consumption was 110.2MB. Max. memory is 16.1GB. [2023-11-25 00:01:57,773 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 142.6MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:01:57,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.90ms. Allocated memory is still 174.1MB. Free memory was 140.3MB in the beginning and 123.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-25 00:01:57,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.53ms. Allocated memory is still 174.1MB. Free memory was 123.6MB in the beginning and 114.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-25 00:01:57,777 INFO L158 Benchmark]: Boogie Preprocessor took 166.75ms. Allocated memory is still 174.1MB. Free memory was 113.4MB in the beginning and 109.1MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-25 00:01:57,782 INFO L158 Benchmark]: RCFGBuilder took 2138.35ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 109.1MB in the beginning and 97.3MB in the end (delta: 11.9MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2023-11-25 00:01:57,783 INFO L158 Benchmark]: TraceAbstraction took 1421.15ms. Allocated memory is still 209.7MB. Free memory was 96.2MB in the beginning and 70.0MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-25 00:01:57,784 INFO L158 Benchmark]: Witness Printer took 6.41ms. Allocated memory is still 209.7MB. Free memory was 70.0MB in the beginning and 68.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:01:57,792 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 142.6MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.90ms. Allocated memory is still 174.1MB. Free memory was 140.3MB in the beginning and 123.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.53ms. Allocated memory is still 174.1MB. Free memory was 123.6MB in the beginning and 114.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 166.75ms. Allocated memory is still 174.1MB. Free memory was 113.4MB in the beginning and 109.1MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2138.35ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 109.1MB in the beginning and 97.3MB in the end (delta: 11.9MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1421.15ms. Allocated memory is still 209.7MB. Free memory was 96.2MB in the beginning and 70.0MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 6.41ms. Allocated memory is still 209.7MB. Free memory was 70.0MB in the beginning and 68.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 110. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 32); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (32 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 64); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (64 - 1); [L35] const SORT_64 mask_SORT_64 = (SORT_64)-1 >> (sizeof(SORT_64) * 8 - 4); [L36] const SORT_64 msb_SORT_64 = (SORT_64)1 << (4 - 1); [L38] const SORT_66 mask_SORT_66 = (SORT_66)-1 >> (sizeof(SORT_66) * 8 - 60); [L39] const SORT_66 msb_SORT_66 = (SORT_66)1 << (60 - 1); [L41] const SORT_10 var_11 = 0; [L42] const SORT_1 var_14 = 0; [L43] const SORT_3 var_24 = 0; [L44] const SORT_1 var_51 = 1; [L45] const SORT_64 var_65 = 0; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_3 input_5; [L50] SORT_1 input_6; [L51] SORT_1 input_7; [L52] SORT_1 input_8; [L53] SORT_1 input_9; [L55] EXPR __VERIFIER_nondet_ulong() & mask_SORT_10 [L55] SORT_10 state_12 = __VERIFIER_nondet_ulong() & mask_SORT_10; [L56] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L56] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] EXPR __VERIFIER_nondet_ulong() & mask_SORT_10 [L57] SORT_10 state_18 = __VERIFIER_nondet_ulong() & mask_SORT_10; [L58] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L58] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L59] EXPR __VERIFIER_nondet_uint() & mask_SORT_3 [L59] SORT_3 state_25 = __VERIFIER_nondet_uint() & mask_SORT_3; [L60] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L60] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L61] EXPR __VERIFIER_nondet_uint() & mask_SORT_3 [L61] SORT_3 state_30 = __VERIFIER_nondet_uint() & mask_SORT_3; [L62] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L62] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L63] EXPR __VERIFIER_nondet_uint() & mask_SORT_3 [L63] SORT_3 state_37 = __VERIFIER_nondet_uint() & mask_SORT_3; [L64] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L64] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] EXPR __VERIFIER_nondet_uint() & mask_SORT_3 [L65] SORT_3 state_42 = __VERIFIER_nondet_uint() & mask_SORT_3; [L66] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L66] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L67] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L67] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L68] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L69] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L69] SORT_1 state_87 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L70] SORT_1 state_92 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_10 init_13_arg_1 = var_11; [L73] state_12 = init_13_arg_1 [L74] SORT_1 init_16_arg_1 = var_14; [L75] state_15 = init_16_arg_1 [L76] SORT_10 init_19_arg_1 = var_11; [L77] state_18 = init_19_arg_1 [L78] SORT_1 init_21_arg_1 = var_14; [L79] state_20 = init_21_arg_1 [L80] SORT_3 init_26_arg_1 = var_24; [L81] state_25 = init_26_arg_1 [L82] SORT_1 init_28_arg_1 = var_14; [L83] state_27 = init_28_arg_1 [L84] SORT_3 init_31_arg_1 = var_24; [L85] state_30 = init_31_arg_1 [L86] SORT_1 init_33_arg_1 = var_14; [L87] state_32 = init_33_arg_1 [L88] SORT_3 init_38_arg_1 = var_24; [L89] state_37 = init_38_arg_1 [L90] SORT_1 init_40_arg_1 = var_14; [L91] state_39 = init_40_arg_1 [L92] SORT_3 init_43_arg_1 = var_24; [L93] state_42 = init_43_arg_1 [L94] SORT_1 init_45_arg_1 = var_14; [L95] state_44 = init_45_arg_1 [L96] SORT_1 init_70_arg_1 = var_14; [L97] state_69 = init_70_arg_1 [L98] SORT_1 init_75_arg_1 = var_14; [L99] state_74 = init_75_arg_1 [L100] SORT_1 init_88_arg_1 = var_14; [L101] state_87 = init_88_arg_1 [L102] SORT_1 init_93_arg_1 = var_14; [L103] state_92 = init_93_arg_1 VAL [init_13_arg_1=0, init_16_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_70_arg_1=0, init_75_arg_1=0, init_88_arg_1=0, init_93_arg_1=0, mask_SORT_10=18446744073709551615, mask_SORT_1=1, mask_SORT_3=4294967295, mask_SORT_64=15, mask_SORT_66=1152921504606846975, msb_SORT_10=9223372036854775808, msb_SORT_1=1, msb_SORT_3=2147483648, msb_SORT_64=8, msb_SORT_66=576460752303423488, state_12=0, state_15=0, state_18=0, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_37=0, state_39=0, state_42=0, state_44=0, state_69=0, state_74=0, state_87=0, state_92=0, var_11=0, var_14=0, var_24=0, var_51=1, var_65=0] [L106] input_2 = __VERIFIER_nondet_uchar() [L107] input_4 = __VERIFIER_nondet_uint() [L108] input_5 = __VERIFIER_nondet_uint() [L109] input_6 = __VERIFIER_nondet_uchar() [L110] EXPR input_6 & mask_SORT_1 [L110] input_6 = input_6 & mask_SORT_1 [L111] input_7 = __VERIFIER_nondet_uchar() [L112] EXPR input_7 & mask_SORT_1 [L112] input_7 = input_7 & mask_SORT_1 [L113] input_8 = __VERIFIER_nondet_uchar() [L114] EXPR input_8 & mask_SORT_1 [L114] input_8 = input_8 & mask_SORT_1 [L115] input_9 = __VERIFIER_nondet_uchar() [L116] EXPR input_9 & mask_SORT_1 [L116] input_9 = input_9 & mask_SORT_1 [L119] SORT_1 var_17_arg_0 = state_15; [L120] SORT_10 var_17_arg_1 = state_12; [L121] SORT_10 var_17_arg_2 = var_11; [L122] SORT_10 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L123] EXPR var_17 & mask_SORT_10 [L123] var_17 = var_17 & mask_SORT_10 [L124] SORT_1 var_22_arg_0 = state_20; [L125] SORT_10 var_22_arg_1 = state_18; [L126] SORT_10 var_22_arg_2 = var_11; [L127] SORT_10 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L128] EXPR var_22 & mask_SORT_10 [L128] var_22 = var_22 & mask_SORT_10 [L129] SORT_10 var_23_arg_0 = var_17; [L130] SORT_10 var_23_arg_1 = var_22; [L131] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L132] SORT_1 var_29_arg_0 = state_27; [L133] SORT_3 var_29_arg_1 = state_25; [L134] SORT_3 var_29_arg_2 = var_24; [L135] SORT_3 var_29 = var_29_arg_0 ? var_29_arg_1 : var_29_arg_2; [L136] EXPR var_29 & mask_SORT_3 [L136] var_29 = var_29 & mask_SORT_3 [L137] SORT_1 var_34_arg_0 = state_32; [L138] SORT_3 var_34_arg_1 = state_30; [L139] SORT_3 var_34_arg_2 = var_24; [L140] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; [L141] EXPR var_34 & mask_SORT_3 [L141] var_34 = var_34 & mask_SORT_3 [L142] SORT_3 var_35_arg_0 = var_29; [L143] SORT_3 var_35_arg_1 = var_34; [L144] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L145] SORT_1 var_36_arg_0 = var_23; [L146] SORT_1 var_36_arg_1 = var_35; [L147] EXPR var_36_arg_0 & var_36_arg_1 [L147] SORT_1 var_36 = var_36_arg_0 & var_36_arg_1; [L148] SORT_1 var_41_arg_0 = state_39; [L149] SORT_3 var_41_arg_1 = state_37; [L150] SORT_3 var_41_arg_2 = var_24; [L151] SORT_3 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L152] EXPR var_41 & mask_SORT_3 [L152] var_41 = var_41 & mask_SORT_3 [L153] SORT_1 var_46_arg_0 = state_44; [L154] SORT_3 var_46_arg_1 = state_42; [L155] SORT_3 var_46_arg_2 = var_24; [L156] SORT_3 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L157] EXPR var_46 & mask_SORT_3 [L157] var_46 = var_46 & mask_SORT_3 [L158] SORT_3 var_47_arg_0 = var_41; [L159] SORT_3 var_47_arg_1 = var_46; [L160] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L161] SORT_1 var_48_arg_0 = var_36; [L162] SORT_1 var_48_arg_1 = var_47; [L163] EXPR var_48_arg_0 & var_48_arg_1 [L163] SORT_1 var_48 = var_48_arg_0 & var_48_arg_1; [L164] SORT_1 var_52_arg_0 = var_48; [L165] SORT_1 var_52 = ~var_52_arg_0; [L166] SORT_1 var_53_arg_0 = var_51; [L167] SORT_1 var_53_arg_1 = var_52; [L168] EXPR var_53_arg_0 & var_53_arg_1 [L168] SORT_1 var_53 = var_53_arg_0 & var_53_arg_1; [L169] EXPR var_53 & mask_SORT_1 [L169] var_53 = var_53 & mask_SORT_1 [L170] SORT_1 bad_54_arg_0 = var_53; [L171] CALL __VERIFIER_assert(!(bad_54_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, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-25 00:01:57,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/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_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/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_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/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_b6494352-d9e5-49b9-ab14-b054d92513bd/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 a17878a5128bf705eaf3e8cc839ad0f7d5b7dcfdf1e66ee241171f7fff28965b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:00,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:00,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-25 00:02:00,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:00,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:00,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:00,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:00,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:00,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:00,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:00,668 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:00,669 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:00,669 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:00,671 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:00,671 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:00,672 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:00,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:00,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:00,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:00,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:00,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:00,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:00,676 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:02:00,676 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:02:00,677 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:02:00,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:00,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:00,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:00,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:02:00,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:00,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:00,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:00,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:00,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:00,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:00,682 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:02:00,682 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:02:00,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:00,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:00,683 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:00,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:00,684 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_b6494352-d9e5-49b9-ab14-b054d92513bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17878a5128bf705eaf3e8cc839ad0f7d5b7dcfdf1e66ee241171f7fff28965b [2023-11-25 00:02:01,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:01,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:01,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:01,133 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:01,134 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:01,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2023-11-25 00:02:04,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:04,601 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:04,602 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2023-11-25 00:02:04,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data/ced36bd76/800d799f54ab47a990d413f7d722020b/FLAGefcce9355 [2023-11-25 00:02:04,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/data/ced36bd76/800d799f54ab47a990d413f7d722020b [2023-11-25 00:02:04,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:04,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:04,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:04,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:04,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:04,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:04" (1/1) ... [2023-11-25 00:02:04,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e32166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:04, skipping insertion in model container [2023-11-25 00:02:04,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:04" (1/1) ... [2023-11-25 00:02:04,709 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:04,938 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_b6494352-d9e5-49b9-ab14-b054d92513bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1244,1257] [2023-11-25 00:02:05,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:05,094 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:05,108 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_b6494352-d9e5-49b9-ab14-b054d92513bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1244,1257] [2023-11-25 00:02:05,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:05,163 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:05,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05 WrapperNode [2023-11-25 00:02:05,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:05,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:05,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:05,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:05,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,290 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 301 [2023-11-25 00:02:05,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:05,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:05,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:05,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:05,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:05,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:05,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:05,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:05,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (1/1) ... [2023-11-25 00:02:05,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:05,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:05,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:05,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:02:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:05,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:05,595 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:05,598 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:06,217 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:06,298 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:06,298 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:02:06,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:06 BoogieIcfgContainer [2023-11-25 00:02:06,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:06,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:06,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:06,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:06,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:04" (1/3) ... [2023-11-25 00:02:06,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48448c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:06, skipping insertion in model container [2023-11-25 00:02:06,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:05" (2/3) ... [2023-11-25 00:02:06,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48448c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:06, skipping insertion in model container [2023-11-25 00:02:06,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:06" (3/3) ... [2023-11-25 00:02:06,312 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul4.c [2023-11-25 00:02:06,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:06,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:02:06,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:06,410 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;@2b250196, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:06,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:02:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:02:06,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:06,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:02:06,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-25 00:02:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:02:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297208438] [2023-11-25 00:02:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:06,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:02:06,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:02:06,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:02:06,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-25 00:02:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:06,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-25 00:02:06,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:07,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:07,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:02:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297208438] [2023-11-25 00:02:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297208438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:07,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:07,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562782812] [2023-11-25 00:02:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:07,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:02:07,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:02:07,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:02:07,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:07,865 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:08,267 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-25 00:02:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-25 00:02:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:08,277 INFO L225 Difference]: With dead ends: 16 [2023-11-25 00:02:08,277 INFO L226 Difference]: Without dead ends: 9 [2023-11-25 00:02:08,279 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 [2023-11-25 00:02:08,283 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:08,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:02:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-25 00:02:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-25 00:02:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-25 00:02:08,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-25 00:02:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:08,317 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-25 00:02:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:02:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-25 00:02:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:02:08,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:08,319 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-25 00:02:08,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/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 [2023-11-25 00:02:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:02:08,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:08,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-25 00:02:08,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:02:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488035218] [2023-11-25 00:02:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:08,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:02:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:02:08,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:02:08,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-25 00:02:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:08,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 85 conjunts are in the unsatisfiable core [2023-11-25 00:02:08,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:13,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:40,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:02:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488035218] [2023-11-25 00:02:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488035218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599871410] [2023-11-25 00:02:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:40,768 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:02:40,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:02:40,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:02:40,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6494352-d9e5-49b9-ab14-b054d92513bd/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-25 00:02:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:41,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-25 00:02:41,286 INFO L285 TraceCheckSpWp]: Computing forward predicates...