./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:21,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:21,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:09:21,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:21,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:21,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:21,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:21,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:21,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:21,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:21,611 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:21,612 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:21,613 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:21,613 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:21,614 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:21,614 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:21,615 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:21,616 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:21,616 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:21,617 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:21,618 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:21,619 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:21,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:21,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:21,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:21,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:21,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:21,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:21,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:21,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:21,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:21,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:21,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:21,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:21,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:21,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:21,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:21,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:21,628 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:21,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:21,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:21,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:21,630 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:21,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:21,631 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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b [2023-11-23 21:09:21,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:21,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:21,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:21,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:21,935 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:21,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-23 21:09:25,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:25,412 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:25,413 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-23 21:09:25,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data/d4e2f1d5e/fda39c12c6934e98baf86240aff049f4/FLAGf2a534be4 [2023-11-23 21:09:25,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data/d4e2f1d5e/fda39c12c6934e98baf86240aff049f4 [2023-11-23 21:09:25,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:25,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:25,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:25,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:25,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:25,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:25,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696cef8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25, skipping insertion in model container [2023-11-23 21:09:25,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:25,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:25,711 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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-23 21:09:25,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:25,813 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:25,827 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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-23 21:09:25,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:25,890 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:25,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25 WrapperNode [2023-11-23 21:09:25,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:25,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:25,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:25,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:25,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:25,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:25,998 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 412 [2023-11-23 21:09:26,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:26,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:26,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:26,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:26,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:26,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:26,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:26,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:26,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (1/1) ... [2023-11-23 21:09:26,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:26,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:26,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:26,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:26,402 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:26,404 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:27,105 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:27,742 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:27,743 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:09:27,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:27 BoogieIcfgContainer [2023-11-23 21:09:27,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:27,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:27,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:27,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:27,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:25" (1/3) ... [2023-11-23 21:09:27,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d504dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:27, skipping insertion in model container [2023-11-23 21:09:27,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:25" (2/3) ... [2023-11-23 21:09:27,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d504dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:27, skipping insertion in model container [2023-11-23 21:09:27,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:27" (3/3) ... [2023-11-23 21:09:27,756 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal51.c [2023-11-23 21:09:27,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:27,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:27,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:27,847 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;@6a164946, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:27,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:27,853 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 21:09:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:09:27,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:27,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:09:27,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:27,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 12244320, now seen corresponding path program 1 times [2023-11-23 21:09:27,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:27,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507903048] [2023-11-23 21:09:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:27,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:09:28,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:09:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:09:29,137 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:09:29,139 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:09:29,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:09:29,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:29,154 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:09:29,158 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:09:29,196 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 21:09:29,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:09:29 BoogieIcfgContainer [2023-11-23 21:09:29,215 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:09:29,217 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:09:29,218 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:09:29,218 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:09:29,219 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:27" (3/4) ... [2023-11-23 21:09:29,221 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:09:29,223 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:09:29,224 INFO L158 Benchmark]: Toolchain (without parser) took 3782.78ms. Allocated memory was 134.2MB in the beginning and 209.7MB in the end (delta: 75.5MB). Free memory was 70.3MB in the beginning and 115.3MB in the end (delta: -45.0MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2023-11-23 21:09:29,224 INFO L158 Benchmark]: CDTParser took 2.24ms. Allocated memory is still 134.2MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:09:29,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.57ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 70.2MB in the beginning and 135.0MB in the end (delta: -64.8MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-23 21:09:29,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.34ms. Allocated memory is still 169.9MB. Free memory was 135.0MB in the beginning and 126.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:09:29,232 INFO L158 Benchmark]: Boogie Preprocessor took 155.23ms. Allocated memory is still 169.9MB. Free memory was 126.1MB in the beginning and 122.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:09:29,233 INFO L158 Benchmark]: RCFGBuilder took 1580.20ms. Allocated memory is still 169.9MB. Free memory was 122.4MB in the beginning and 108.5MB in the end (delta: 13.9MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2023-11-23 21:09:29,234 INFO L158 Benchmark]: TraceAbstraction took 1466.84ms. Allocated memory was 169.9MB in the beginning and 209.7MB in the end (delta: 39.8MB). Free memory was 107.5MB in the beginning and 115.3MB in the end (delta: -7.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2023-11-23 21:09:29,235 INFO L158 Benchmark]: Witness Printer took 5.34ms. Allocated memory is still 209.7MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:09:29,245 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.24ms. Allocated memory is still 134.2MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.57ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 70.2MB in the beginning and 135.0MB in the end (delta: -64.8MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.34ms. Allocated memory is still 169.9MB. Free memory was 135.0MB in the beginning and 126.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 155.23ms. Allocated memory is still 169.9MB. Free memory was 126.1MB in the beginning and 122.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1580.20ms. Allocated memory is still 169.9MB. Free memory was 122.4MB in the beginning and 108.5MB in the end (delta: 13.9MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1466.84ms. Allocated memory was 169.9MB in the beginning and 209.7MB in the end (delta: 39.8MB). Free memory was 107.5MB in the beginning and 115.3MB in the end (delta: -7.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Witness Printer took 5.34ms. Allocated memory is still 209.7MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 97, overapproximation of bitwiseAnd at line 66. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L32] const SORT_27 mask_SORT_27 = (SORT_27)-1 >> (sizeof(SORT_27) * 8 - 2); [L33] const SORT_27 msb_SORT_27 = (SORT_27)1 << (2 - 1); [L35] const SORT_1 var_11 = 0; [L36] const SORT_5 var_15 = 0; [L37] const SORT_5 var_21 = 2; [L38] const SORT_5 var_24 = 1; [L39] const SORT_1 var_41 = 1; [L41] SORT_1 input_2; [L42] SORT_1 input_3; [L43] SORT_1 input_4; [L44] SORT_5 input_6; [L45] SORT_5 input_7; [L46] SORT_1 input_8; [L47] SORT_5 input_9; [L48] SORT_5 input_10; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L50] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L51] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L52] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L52] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L53] SORT_5 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L55] SORT_1 init_13_arg_1 = var_11; [L56] state_12 = init_13_arg_1 [L57] SORT_5 init_17_arg_1 = var_15; [L58] state_16 = init_17_arg_1 [L59] SORT_1 init_19_arg_1 = var_11; [L60] state_18 = init_19_arg_1 [L61] SORT_5 init_31_arg_1 = var_15; [L62] state_30 = init_31_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L65] input_2 = __VERIFIER_nondet_uchar() [L66] EXPR input_2 & mask_SORT_1 [L66] input_2 = input_2 & mask_SORT_1 [L67] input_3 = __VERIFIER_nondet_uchar() [L68] EXPR input_3 & mask_SORT_1 [L68] input_3 = input_3 & mask_SORT_1 [L69] input_4 = __VERIFIER_nondet_uchar() [L70] input_6 = __VERIFIER_nondet_uchar() [L71] input_7 = __VERIFIER_nondet_uchar() [L72] input_8 = __VERIFIER_nondet_uchar() [L73] input_9 = __VERIFIER_nondet_uchar() [L74] input_10 = __VERIFIER_nondet_uchar() [L77] SORT_1 var_14_arg_0 = state_12; [L78] SORT_1 var_14 = ~var_14_arg_0; [L79] SORT_1 var_20_arg_0 = state_18; [L80] SORT_5 var_20_arg_1 = state_16; [L81] SORT_5 var_20_arg_2 = input_7; [L82] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; [L83] EXPR var_20 & mask_SORT_5 [L83] var_20 = var_20 & mask_SORT_5 [L84] SORT_5 var_25_arg_0 = var_20; [L85] SORT_5 var_25_arg_1 = var_24; [L86] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L87] SORT_1 var_26_arg_0 = var_25; [L88] SORT_1 var_26 = ~var_26_arg_0; [L89] SORT_5 var_22_arg_0 = var_20; [L90] SORT_5 var_22_arg_1 = var_21; [L91] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L92] SORT_1 var_23_arg_0 = var_22; [L93] SORT_1 var_23 = ~var_23_arg_0; [L94] EXPR var_23 & mask_SORT_1 [L94] var_23 = var_23 & mask_SORT_1 [L95] SORT_1 var_28_arg_0 = var_26; [L96] SORT_1 var_28_arg_1 = var_23; [L97] EXPR ((SORT_27)var_28_arg_0 << 1) | var_28_arg_1 [L97] SORT_27 var_28 = ((SORT_27)var_28_arg_0 << 1) | var_28_arg_1; [L98] EXPR var_28 & mask_SORT_27 [L98] var_28 = var_28 & mask_SORT_27 [L99] SORT_27 var_29_arg_0 = var_28; [L100] SORT_1 var_29 = var_29_arg_0 == mask_SORT_27; [L101] SORT_1 var_32_arg_0 = state_18; [L102] SORT_5 var_32_arg_1 = state_30; [L103] SORT_5 var_32_arg_2 = input_7; [L104] SORT_5 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L105] EXPR var_32 & mask_SORT_5 [L105] var_32 = var_32 & mask_SORT_5 [L106] SORT_5 var_33_arg_0 = var_32; [L107] SORT_5 var_33_arg_1 = var_21; [L108] SORT_1 var_33 = var_33_arg_0 == var_33_arg_1; [L109] SORT_1 var_34_arg_0 = var_33; [L110] SORT_1 var_34 = ~var_34_arg_0; [L111] EXPR var_34 & mask_SORT_1 [L111] var_34 = var_34 & mask_SORT_1 [L112] SORT_1 var_35_arg_0 = var_26; [L113] SORT_1 var_35_arg_1 = var_34; [L114] EXPR ((SORT_27)var_35_arg_0 << 1) | var_35_arg_1 [L114] SORT_27 var_35 = ((SORT_27)var_35_arg_0 << 1) | var_35_arg_1; [L115] EXPR var_35 & mask_SORT_27 [L115] var_35 = var_35 & mask_SORT_27 [L116] SORT_27 var_36_arg_0 = var_35; [L117] SORT_1 var_36 = var_36_arg_0 == mask_SORT_27; [L118] SORT_1 var_37_arg_0 = var_29; [L119] SORT_1 var_37_arg_1 = var_36; [L120] SORT_1 var_37 = var_37_arg_0 == var_37_arg_1; [L121] SORT_1 var_38_arg_0 = var_14; [L122] SORT_1 var_38_arg_1 = var_37; [L123] EXPR var_38_arg_0 | var_38_arg_1 [L123] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L124] SORT_1 var_42_arg_0 = var_38; [L125] SORT_1 var_42 = ~var_42_arg_0; [L126] SORT_1 var_43_arg_0 = var_41; [L127] SORT_1 var_43_arg_1 = var_42; [L128] EXPR var_43_arg_0 & var_43_arg_1 [L128] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L129] EXPR var_43 & mask_SORT_1 [L129] var_43 = var_43 & mask_SORT_1 [L130] SORT_1 bad_44_arg_0 = var_43; [L131] CALL __VERIFIER_assert(!(bad_44_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:09:29,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:31,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:32,004 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 21:09:32,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:32,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:32,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:32,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:32,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:32,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:32,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:32,043 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:32,044 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:32,044 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:32,045 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:32,046 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:32,046 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:32,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:32,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:32,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:32,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:32,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:32,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:32,051 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:09:32,052 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:09:32,055 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:09:32,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:32,056 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:32,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:32,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:09:32,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:32,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:32,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:32,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:32,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:32,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:32,061 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:09:32,061 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:09:32,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:32,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:32,062 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:32,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:32,063 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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b [2023-11-23 21:09:32,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:32,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:32,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:32,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:32,479 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:32,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-23 21:09:35,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:36,006 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:36,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-23 21:09:36,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data/56b2b0011/1e3c8ffda11a4baaa0f6952fe9d29681/FLAG46366de2b [2023-11-23 21:09:36,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/data/56b2b0011/1e3c8ffda11a4baaa0f6952fe9d29681 [2023-11-23 21:09:36,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:36,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:36,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:36,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:36,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:36,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbd236f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36, skipping insertion in model container [2023-11-23 21:09:36,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:36,332 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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-23 21:09:36,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:36,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:36,455 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_61959b63-5dd6-45e6-97db-f1a6f8122d6f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-23 21:09:36,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:36,562 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:36,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36 WrapperNode [2023-11-23 21:09:36,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:36,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:36,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:36,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:36,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,623 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 212 [2023-11-23 21:09:36,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:36,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:36,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:36,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:36,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:36,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:36,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:36,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:36,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (1/1) ... [2023-11-23 21:09:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:36,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:36,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:36,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:09:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:36,878 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:36,881 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:37,242 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:37,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:37,342 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:09:37,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:37 BoogieIcfgContainer [2023-11-23 21:09:37,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:37,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:37,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:37,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:37,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:36" (1/3) ... [2023-11-23 21:09:37,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548fe8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:37, skipping insertion in model container [2023-11-23 21:09:37,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:36" (2/3) ... [2023-11-23 21:09:37,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548fe8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:37, skipping insertion in model container [2023-11-23 21:09:37,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:37" (3/3) ... [2023-11-23 21:09:37,351 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal51.c [2023-11-23 21:09:37,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:37,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:37,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:37,438 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;@672ba4a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:37,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:37,443 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 21:09:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:09:37,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:37,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:09:37,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:37,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-23 21:09:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:09:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614442651] [2023-11-23 21:09:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:37,480 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 21:09:37,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:09:37,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 21:09:37,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 21:09:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:37,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:09:37,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:37,937 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 21:09:37,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:37,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:09:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614442651] [2023-11-23 21:09:37,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614442651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:37,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:37,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:37,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552655030] [2023-11-23 21:09:37,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:09:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:09:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:09:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:09:37,996 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 21:09:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:38,073 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-23 21:09:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:09:38,076 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 21:09:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:38,084 INFO L225 Difference]: With dead ends: 16 [2023-11-23 21:09:38,084 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 21:09:38,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:38,092 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:38,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:09:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 21:09:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-23 21:09:38,124 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 21:09:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 21:09:38,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 21:09:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:38,128 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 21:09:38,128 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 21:09:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 21:09:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:09:38,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:38,129 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 21:09:38,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:38,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 21:09:38,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:38,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-23 21:09:38,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:09:38,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900454362] [2023-11-23 21:09:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:38,335 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 21:09:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:09:38,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 21:09:38,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 21:09:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:38,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-23 21:09:38,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:39,529 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 21:09:39,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:43,352 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 21:09:43,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:09:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900454362] [2023-11-23 21:09:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900454362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [600282525] [2023-11-23 21:09:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:09:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:09:43,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:09:43,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:09:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:43,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 21:09:43,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:44,236 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 21:09:44,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:49,857 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 21:09:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [600282525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712169985] [2023-11-23 21:09:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:49,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:49,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:09:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:50,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-23 21:09:50,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:50,898 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 21:09:50,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:09:56,822 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 21:09:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712169985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:09:56,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:09:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 4, 5, 5] total 11 [2023-11-23 21:09:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319389475] [2023-11-23 21:09:56,824 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:09:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:09:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:09:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:09:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:09:56,827 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 21:09:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:57,325 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-23 21:09:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:09:57,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:09:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:57,328 INFO L225 Difference]: With dead ends: 14 [2023-11-23 21:09:57,328 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 21:09:57,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:09:57,331 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:57,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 11 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:09:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 21:09:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-23 21:09:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:09:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-23 21:09:57,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-23 21:09:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:57,336 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-23 21:09:57,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 21:09:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-23 21:09:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:09:57,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:57,337 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-23 21:09:57,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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)] Ended with exit code 0 [2023-11-23 21:09:57,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:57,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:57,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:57,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:57,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-23 21:09:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:09:57,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919707946] [2023-11-23 21:09:57,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:09:57,944 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 21:09:57,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:09:57,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 21:09:57,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61959b63-5dd6-45e6-97db-f1a6f8122d6f/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 (6)] Waiting until timeout for monitored process [2023-11-23 21:09:58,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:09:58,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:09:58,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-23 21:09:58,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:02,207 INFO L327 TraceCheckSpWp]: Computing backward predicates...