./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 4e7fbc69 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --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 6aed6bf8fc317bb16c8e659d3bca02b0f5b891a23be71ffc05a2c2525e16b6d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:52:06,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:52:06,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:52:06,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:52:06,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:52:06,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:52:06,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:52:06,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:52:06,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:52:06,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:52:06,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:52:06,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:52:06,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:52:06,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:52:06,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:52:06,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:52:06,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:52:06,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:52:06,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:52:06,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:52:06,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:52:06,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:52:06,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:52:06,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:52:06,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:52:06,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:52:06,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:52:06,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:52:06,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:52:06,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:52:06,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:52:06,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:52:06,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:52:06,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:52:06,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:52:06,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:52:06,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:52:06,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:52:06,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:52:06,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:52:06,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:52:06,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:52:06,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:52:06,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:52:06,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:52:06,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:52:06,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:52:06,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:52:06,573 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:52:06,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:52:06,574 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:52:06,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:52:06,575 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:52:06,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:52:06,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:52:06,575 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:52:06,575 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:52:06,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:52:06,576 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:52:06,576 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:52:06,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:52:06,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:52:06,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:52:06,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:52:06,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:52:06,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:52:06,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:52:06,579 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:52:06,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:52:06,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:52:06,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:52:06,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:06,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:52:06,580 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:52:06,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:52:06,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:52:06,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:52:06,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:52:06,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:52:06,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:52:06,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aed6bf8fc317bb16c8e659d3bca02b0f5b891a23be71ffc05a2c2525e16b6d8 [2022-11-23 14:52:06,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:52:06,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:52:06,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:52:06,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:52:06,904 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:52:06,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2022-11-23 14:52:10,150 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:52:10,422 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:52:10,422 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2022-11-23 14:52:10,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data/1f4f2d932/b18aca585e32414aa70170dec5515341/FLAG5467dbd60 [2022-11-23 14:52:10,454 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data/1f4f2d932/b18aca585e32414aa70170dec5515341 [2022-11-23 14:52:10,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:52:10,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:52:10,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:10,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:52:10,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:52:10,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbca3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10, skipping insertion in model container [2022-11-23 14:52:10,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:52:10,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:52:10,668 WARN L237 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1107,1120] [2022-11-23 14:52:10,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:52:10,763 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:52:10,776 WARN L237 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1107,1120] [2022-11-23 14:52:10,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:52:10,876 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:52:10,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10 WrapperNode [2022-11-23 14:52:10,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:10,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:52:10,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:52:10,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:52:10,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,943 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 263 [2022-11-23 14:52:10,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:52:10,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:52:10,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:52:10,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:52:10,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,979 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:10,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:52:10,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:52:10,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:52:10,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:52:10,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (1/1) ... [2022-11-23 14:52:11,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:11,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:52:11,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:52:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:52:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:52:11,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:52:11,277 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:52:11,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:52:12,183 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:52:12,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:52:12,207 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:52:12,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:12 BoogieIcfgContainer [2022-11-23 14:52:12,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:52:12,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:52:12,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:52:12,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:52:12,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:52:10" (1/3) ... [2022-11-23 14:52:12,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1097ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:12, skipping insertion in model container [2022-11-23 14:52:12,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:10" (2/3) ... [2022-11-23 14:52:12,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1097ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:12, skipping insertion in model container [2022-11-23 14:52:12,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:12" (3/3) ... [2022-11-23 14:52:12,221 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul4.c [2022-11-23 14:52:12,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:52:12,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:52:12,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:52:12,303 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=LoopsAndPotentialCycles, 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;@50861b78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:52:12,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:52:12,307 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) [2022-11-23 14:52:12,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:52:12,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:52:12,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:52:12,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:52:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:52:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-23 14:52:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:52:12,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384092164] [2022-11-23 14:52:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:52:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:52:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:52:12,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:52:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:52:12,980 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:52:12,982 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:52:12,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:52:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:52:12,992 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:52:12,997 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:52:13,022 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 14:52:13,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:52:13 BoogieIcfgContainer [2022-11-23 14:52:13,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:52:13,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:52:13,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:52:13,033 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:52:13,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:12" (3/4) ... [2022-11-23 14:52:13,037 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:52:13,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:52:13,039 INFO L158 Benchmark]: Toolchain (without parser) took 2579.75ms. Allocated memory is still 161.5MB. Free memory was 130.1MB in the beginning and 82.9MB in the end (delta: 47.2MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-11-23 14:52:13,039 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 70.3MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:52:13,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.31ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 114.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:52:13,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.96ms. Allocated memory is still 161.5MB. Free memory was 114.6MB in the beginning and 111.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:52:13,041 INFO L158 Benchmark]: Boogie Preprocessor took 41.84ms. Allocated memory is still 161.5MB. Free memory was 111.2MB in the beginning and 109.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:52:13,042 INFO L158 Benchmark]: RCFGBuilder took 1224.07ms. Allocated memory is still 161.5MB. Free memory was 109.1MB in the beginning and 121.7MB in the end (delta: -12.6MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2022-11-23 14:52:13,043 INFO L158 Benchmark]: TraceAbstraction took 819.36ms. Allocated memory is still 161.5MB. Free memory was 120.7MB in the beginning and 82.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-23 14:52:13,043 INFO L158 Benchmark]: Witness Printer took 4.94ms. Allocated memory is still 161.5MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:52:13,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 70.3MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.31ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 114.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.96ms. Allocated memory is still 161.5MB. Free memory was 114.6MB in the beginning and 111.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.84ms. Allocated memory is still 161.5MB. Free memory was 111.2MB in the beginning and 109.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1224.07ms. Allocated memory is still 161.5MB. Free memory was 109.1MB in the beginning and 121.7MB in the end (delta: -12.6MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * TraceAbstraction took 819.36ms. Allocated memory is still 161.5MB. Free memory was 120.7MB in the beginning and 82.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.94ms. Allocated memory is still 161.5MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 164, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 32); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (32 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 64); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (64 - 1); [L34] const SORT_64 mask_SORT_64 = (SORT_64)-1 >> (sizeof(SORT_64) * 8 - 4); [L35] const SORT_64 msb_SORT_64 = (SORT_64)1 << (4 - 1); [L37] const SORT_66 mask_SORT_66 = (SORT_66)-1 >> (sizeof(SORT_66) * 8 - 60); [L38] const SORT_66 msb_SORT_66 = (SORT_66)1 << (60 - 1); [L40] const SORT_10 var_11 = 0; [L41] const SORT_1 var_14 = 0; [L42] const SORT_3 var_24 = 0; [L43] const SORT_1 var_51 = 1; [L44] const SORT_64 var_65 = 0; [L46] SORT_1 input_2; [L47] SORT_3 input_4; [L48] SORT_3 input_5; [L49] SORT_1 input_6; [L50] SORT_1 input_7; [L51] SORT_1 input_8; [L52] SORT_1 input_9; [L54] SORT_10 state_12 = __VERIFIER_nondet_ulong() & mask_SORT_10; [L55] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_10 state_18 = __VERIFIER_nondet_ulong() & mask_SORT_10; [L57] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L58] SORT_3 state_25 = __VERIFIER_nondet_uint() & mask_SORT_3; [L59] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L60] SORT_3 state_30 = __VERIFIER_nondet_uint() & mask_SORT_3; [L61] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L62] SORT_3 state_37 = __VERIFIER_nondet_uint() & mask_SORT_3; [L63] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L64] SORT_3 state_42 = __VERIFIER_nondet_uint() & mask_SORT_3; [L65] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L66] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L67] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 state_87 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L69] SORT_1 state_92 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_10 init_13_arg_1 = var_11; [L72] state_12 = init_13_arg_1 [L73] SORT_1 init_16_arg_1 = var_14; [L74] state_15 = init_16_arg_1 [L75] SORT_10 init_19_arg_1 = var_11; [L76] state_18 = init_19_arg_1 [L77] SORT_1 init_21_arg_1 = var_14; [L78] state_20 = init_21_arg_1 [L79] SORT_3 init_26_arg_1 = var_24; [L80] state_25 = init_26_arg_1 [L81] SORT_1 init_28_arg_1 = var_14; [L82] state_27 = init_28_arg_1 [L83] SORT_3 init_31_arg_1 = var_24; [L84] state_30 = init_31_arg_1 [L85] SORT_1 init_33_arg_1 = var_14; [L86] state_32 = init_33_arg_1 [L87] SORT_3 init_38_arg_1 = var_24; [L88] state_37 = init_38_arg_1 [L89] SORT_1 init_40_arg_1 = var_14; [L90] state_39 = init_40_arg_1 [L91] SORT_3 init_43_arg_1 = var_24; [L92] state_42 = init_43_arg_1 [L93] SORT_1 init_45_arg_1 = var_14; [L94] state_44 = init_45_arg_1 [L95] SORT_1 init_70_arg_1 = var_14; [L96] state_69 = init_70_arg_1 [L97] SORT_1 init_75_arg_1 = var_14; [L98] state_74 = init_75_arg_1 [L99] SORT_1 init_88_arg_1 = var_14; [L100] state_87 = init_88_arg_1 [L101] SORT_1 init_93_arg_1 = var_14; [L102] 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_1=1, mask_SORT_10=18446744073709551615, mask_SORT_3=4294967295, mask_SORT_64=15, mask_SORT_66=18446744073709551615, msb_SORT_1=1, msb_SORT_10=9223372036854775808, 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] [L105] input_2 = __VERIFIER_nondet_uchar() [L106] input_4 = __VERIFIER_nondet_uint() [L107] input_5 = __VERIFIER_nondet_uint() [L108] input_6 = __VERIFIER_nondet_uchar() [L109] input_6 = input_6 & mask_SORT_1 [L110] input_7 = __VERIFIER_nondet_uchar() [L111] input_7 = input_7 & mask_SORT_1 [L112] input_8 = __VERIFIER_nondet_uchar() [L113] input_8 = input_8 & mask_SORT_1 [L114] input_9 = __VERIFIER_nondet_uchar() [L115] input_9 = input_9 & mask_SORT_1 [L118] SORT_1 var_17_arg_0 = state_15; [L119] SORT_10 var_17_arg_1 = state_12; [L120] SORT_10 var_17_arg_2 = var_11; [L121] SORT_10 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L122] var_17 = var_17 & mask_SORT_10 [L123] SORT_1 var_22_arg_0 = state_20; [L124] SORT_10 var_22_arg_1 = state_18; [L125] SORT_10 var_22_arg_2 = var_11; [L126] SORT_10 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L127] var_22 = var_22 & mask_SORT_10 [L128] SORT_10 var_23_arg_0 = var_17; [L129] SORT_10 var_23_arg_1 = var_22; [L130] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L131] SORT_1 var_29_arg_0 = state_27; [L132] SORT_3 var_29_arg_1 = state_25; [L133] SORT_3 var_29_arg_2 = var_24; [L134] SORT_3 var_29 = var_29_arg_0 ? var_29_arg_1 : var_29_arg_2; [L135] var_29 = var_29 & mask_SORT_3 [L136] SORT_1 var_34_arg_0 = state_32; [L137] SORT_3 var_34_arg_1 = state_30; [L138] SORT_3 var_34_arg_2 = var_24; [L139] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; [L140] var_34 = var_34 & mask_SORT_3 [L141] SORT_3 var_35_arg_0 = var_29; [L142] SORT_3 var_35_arg_1 = var_34; [L143] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L144] SORT_1 var_36_arg_0 = var_23; [L145] SORT_1 var_36_arg_1 = var_35; [L146] SORT_1 var_36 = var_36_arg_0 & var_36_arg_1; [L147] SORT_1 var_41_arg_0 = state_39; [L148] SORT_3 var_41_arg_1 = state_37; [L149] SORT_3 var_41_arg_2 = var_24; [L150] SORT_3 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L151] var_41 = var_41 & mask_SORT_3 [L152] SORT_1 var_46_arg_0 = state_44; [L153] SORT_3 var_46_arg_1 = state_42; [L154] SORT_3 var_46_arg_2 = var_24; [L155] SORT_3 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L156] var_46 = var_46 & mask_SORT_3 [L157] SORT_3 var_47_arg_0 = var_41; [L158] SORT_3 var_47_arg_1 = var_46; [L159] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L160] SORT_1 var_48_arg_0 = var_36; [L161] SORT_1 var_48_arg_1 = var_47; [L162] SORT_1 var_48 = var_48_arg_0 & var_48_arg_1; [L163] SORT_1 var_52_arg_0 = var_48; [L164] SORT_1 var_52 = ~var_52_arg_0; [L165] SORT_1 var_53_arg_0 = var_51; [L166] SORT_1 var_53_arg_1 = var_52; [L167] SORT_1 var_53 = var_53_arg_0 & var_53_arg_1; [L168] var_53 = var_53 & mask_SORT_1 [L169] SORT_1 bad_54_arg_0 = var_53; [L170] CALL __VERIFIER_assert(!(bad_54_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s 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 [2022-11-23 14:52:13,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --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 6aed6bf8fc317bb16c8e659d3bca02b0f5b891a23be71ffc05a2c2525e16b6d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:52:15,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:52:15,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:52:15,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:52:15,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:52:15,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:52:15,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:52:15,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:52:15,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:52:15,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:52:15,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:52:15,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:52:15,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:52:15,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:52:15,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:52:15,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:52:15,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:52:15,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:52:15,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:52:15,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:52:15,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:52:15,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:52:15,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:52:15,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:52:15,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:52:15,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:52:15,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:52:15,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:52:15,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:52:15,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:52:15,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:52:15,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:52:15,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:52:15,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:52:15,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:52:15,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:52:15,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:52:15,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:52:15,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:52:15,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:52:15,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:52:15,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 14:52:15,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:52:15,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:52:15,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:52:15,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:52:15,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:52:15,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:52:15,990 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:52:15,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:52:15,991 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:52:15,991 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:52:15,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:52:15,992 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:52:15,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:52:15,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:52:15,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:52:15,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:52:15,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:52:15,994 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:52:15,994 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:52:15,995 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:52:15,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:52:15,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:52:15,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:52:15,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:52:15,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:52:15,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:52:15,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:15,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:52:15,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:52:15,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:52:15,997 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:52:15,997 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:52:15,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:52:15,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:52:15,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:52:15,998 INFO L138 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aed6bf8fc317bb16c8e659d3bca02b0f5b891a23be71ffc05a2c2525e16b6d8 [2022-11-23 14:52:16,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:52:16,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:52:16,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:52:16,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:52:16,457 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:52:16,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2022-11-23 14:52:19,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:52:20,200 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:52:20,201 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c [2022-11-23 14:52:20,210 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data/4aa100f6f/46ecc74ed0ec41ba820df344464f2573/FLAG675e9208b [2022-11-23 14:52:20,225 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/data/4aa100f6f/46ecc74ed0ec41ba820df344464f2573 [2022-11-23 14:52:20,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:52:20,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:52:20,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:20,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:52:20,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:52:20,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c78d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20, skipping insertion in model container [2022-11-23 14:52:20,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:52:20,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:52:20,429 WARN L237 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1107,1120] [2022-11-23 14:52:20,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:52:20,548 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:52:20,570 WARN L237 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_1bfa5b80-936c-4341-a9d3-ebd310e6b583/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul4.c[1107,1120] [2022-11-23 14:52:20,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:52:20,695 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:52:20,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20 WrapperNode [2022-11-23 14:52:20,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:20,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:52:20,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:52:20,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:52:20,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,744 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 263 [2022-11-23 14:52:20,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:52:20,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:52:20,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:52:20,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:52:20,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:52:20,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:52:20,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:52:20,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:52:20,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (1/1) ... [2022-11-23 14:52:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:52:20,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:52:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:52:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:52:20,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:52:21,114 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:52:21,116 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:52:21,597 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:52:21,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:52:21,606 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:52:21,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:21 BoogieIcfgContainer [2022-11-23 14:52:21,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:52:21,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:52:21,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:52:21,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:52:21,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:52:20" (1/3) ... [2022-11-23 14:52:21,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7fc440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:21, skipping insertion in model container [2022-11-23 14:52:21,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:20" (2/3) ... [2022-11-23 14:52:21,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7fc440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:21, skipping insertion in model container [2022-11-23 14:52:21,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:21" (3/3) ... [2022-11-23 14:52:21,619 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul4.c [2022-11-23 14:52:21,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:52:21,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:52:21,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:52:21,705 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=LoopsAndPotentialCycles, 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;@73aa01cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:52:21,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:52:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-23 14:52:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:52:21,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:52:21,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:52:21,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:52:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:52:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 14:52:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:52:21,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061667800] [2022-11-23 14:52:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:52:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:52:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:52:21,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:52:21,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:52:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:52:21,931 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-23 14:52:21,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:52:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:52:22,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:52:22,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:52:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061667800] [2022-11-23 14:52:22,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061667800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:52:22,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:52:22,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:52:22,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761461889] [2022-11-23 14:52:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:52:22,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:52:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:52:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:52:22,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:52:22,649 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-23 14:52:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:52:23,210 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 14:52:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:52:23,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-23 14:52:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:52:23,220 INFO L225 Difference]: With dead ends: 20 [2022-11-23 14:52:23,220 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 14:52:23,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:52:23,226 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:52:23,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:52:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 14:52:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 14:52:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-23 14:52:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 14:52:23,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 14:52:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:52:23,263 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 14:52:23,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-23 14:52:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 14:52:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:52:23,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:52:23,264 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 14:52:23,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 14:52:23,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:52:23,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:52:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:52:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 14:52:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:52:23,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834877158] [2022-11-23 14:52:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:52:23,481 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 [2022-11-23 14:52:23,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:52:23,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:52:23,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:52:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:52:23,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-23 14:52:23,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:52:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:52:29,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:53:18,405 WARN L233 SmtUtils]: Spent 34.45s on a formula simplification. DAG size of input: 406 DAG size of output: 147 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:27,179 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 119 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:53:27,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:53:27,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834877158] [2022-11-23 14:53:27,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834877158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:53:27,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [578723784] [2022-11-23 14:53:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:27,448 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:53:27,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:53:27,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:53:27,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 14:53:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:27,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-23 14:53:27,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:53:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:53:30,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:53:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:53:51,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [578723784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:53:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393217051] [2022-11-23 14:53:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:51,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:53:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:53:51,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:53:51,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:53:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:51,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-23 14:53:51,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:53:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:53:54,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:54:09,596 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 190 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:54:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:54:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393217051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:54:13,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:54:13,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 22 [2022-11-23 14:54:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325498815] [2022-11-23 14:54:13,691 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:54:13,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 14:54:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:54:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 14:54:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=358, Unknown=1, NotChecked=0, Total=462 [2022-11-23 14:54:13,693 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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) [2022-11-23 14:54:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:15,240 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 14:54:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:54:15,242 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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 8 [2022-11-23 14:54:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:15,243 INFO L225 Difference]: With dead ends: 16 [2022-11-23 14:54:15,243 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 14:54:15,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 65.8s TimeCoverageRelationStatistics Valid=149, Invalid=450, Unknown=1, NotChecked=0, Total=600 [2022-11-23 14:54:15,245 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:15,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 28 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:54:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 14:54:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 14:54:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-23 14:54:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 14:54:15,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 14:54:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:54:15,251 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 14:54:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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) [2022-11-23 14:54:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 14:54:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:54:15,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:54:15,252 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 14:54:15,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:54:15,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 14:54:15,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:54:15,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:54:15,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:54:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:54:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 14:54:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:54:15,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535075108] [2022-11-23 14:54:15,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:54:15,865 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 [2022-11-23 14:54:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:54:15,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:54:15,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa5b80-936c-4341-a9d3-ebd310e6b583/bin/utaipan-Q6hlc19bkW/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