./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG --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 32bit --witnessprinter.graph.data.programhash bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 ................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG --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 32bit --witnessprinter.graph.data.programhash bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 .......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:49:16,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:49:16,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:49:16,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:49:16,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:49:16,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:49:16,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:49:16,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:49:16,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:49:16,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:49:16,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:49:16,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:49:16,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:49:16,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:49:16,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:49:16,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:49:16,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:49:16,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:49:16,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:49:16,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:49:16,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:49:16,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:49:16,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:49:16,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:49:16,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:49:16,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:49:16,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:49:16,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:49:16,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:49:16,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:49:16,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:49:16,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:49:16,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:49:16,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:49:16,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:49:16,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:49:16,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:49:16,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:49:16,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:49:16,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:49:16,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:49:16,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:49:16,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:49:16,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:49:16,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:49:16,564 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:49:16,564 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:49:16,565 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:49:16,565 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:49:16,565 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:49:16,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:49:16,577 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:49:16,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:49:16,579 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:49:16,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:49:16,580 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:49:16,580 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:49:16,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:49:16,581 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:49:16,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:49:16,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:49:16,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:49:16,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:49:16,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:49:16,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:49:16,583 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:49:16,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:49:16,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:49:16,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:49:16,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:49:16,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:49:16,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:49:16,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:16,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:49:16,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:49:16,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:49:16,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:49:16,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:49:16,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:49:16,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:49:16,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:49:16,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-10-29 05:49:16,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:49:16,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:49:16,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:49:17,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:49:17,001 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:49:17,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-10-29 05:49:17,101 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/5006134b0/1d2d2db6a1344c7aa581919712458afa/FLAG6d50aae49 [2021-10-29 05:49:17,713 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:49:17,716 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-10-29 05:49:17,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/5006134b0/1d2d2db6a1344c7aa581919712458afa/FLAG6d50aae49 [2021-10-29 05:49:18,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/5006134b0/1d2d2db6a1344c7aa581919712458afa [2021-10-29 05:49:18,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:49:18,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:49:18,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:18,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:49:18,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:49:18,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60244478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18, skipping insertion in model container [2021-10-29 05:49:18,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:49:18,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:49:18,348 WARN L228 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_72ccbee9-3a67-4298-a130-94affafea51a/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-10-29 05:49:18,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:18,370 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:49:18,393 WARN L228 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_72ccbee9-3a67-4298-a130-94affafea51a/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-10-29 05:49:18,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:18,412 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:49:18,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18 WrapperNode [2021-10-29 05:49:18,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:18,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:18,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:49:18,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:49:18,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:18,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:49:18,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:49:18,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:49:18,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:49:18,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:49:18,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:49:18,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:49:18,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (1/1) ... [2021-10-29 05:49:18,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:49:18,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:49:18,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:49:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:49:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:49:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:49:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:49:18,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:49:18,958 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:49:18,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:18 BoogieIcfgContainer [2021-10-29 05:49:18,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:49:18,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:49:18,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:49:18,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:49:18,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:49:18" (1/3) ... [2021-10-29 05:49:18,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30de16b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:18, skipping insertion in model container [2021-10-29 05:49:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:18" (2/3) ... [2021-10-29 05:49:18,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30de16b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:18, skipping insertion in model container [2021-10-29 05:49:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:18" (3/3) ... [2021-10-29 05:49:18,972 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-10-29 05:49:18,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:49:18,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:49:19,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:49:19,039 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:49:19,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:49:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-29 05:49:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:49:19,065 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:49:19,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:49:19,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:49:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:49:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 56187, now seen corresponding path program 1 times [2021-10-29 05:49:19,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:49:19,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553295789] [2021-10-29 05:49:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:49:19,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:49:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:49:19,238 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:49:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:49:19,316 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:49:19,320 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:49:19,322 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:49:19,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:49:19,333 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:49:19,336 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:49:19,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:49:19 BoogieIcfgContainer [2021-10-29 05:49:19,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:49:19,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:49:19,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:49:19,368 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:49:19,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:18" (3/4) ... [2021-10-29 05:49:19,373 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:49:19,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:49:19,381 INFO L168 Benchmark]: Toolchain (without parser) took 1269.76 ms. Allocated memory is still 96.5 MB. Free memory was 62.2 MB in the beginning and 45.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:19,382 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:19,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.32 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 73.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:19,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.64 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:19,386 INFO L168 Benchmark]: Boogie Preprocessor took 33.43 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 70.4 MB in the end (delta: 867.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:19,388 INFO L168 Benchmark]: RCFGBuilder took 467.08 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 59.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:19,394 INFO L168 Benchmark]: TraceAbstraction took 399.30 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 46.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:49:19,397 INFO L168 Benchmark]: Witness Printer took 7.24 ms. Allocated memory is still 96.5 MB. Free memory was 46.1 MB in the beginning and 45.7 MB in the end (delta: 402.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:49:19,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.32 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 73.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.64 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.43 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 70.4 MB in the end (delta: 867.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 467.08 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 59.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 399.30 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 46.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.24 ms. Allocated memory is still 96.5 MB. Free memory was 46.1 MB in the beginning and 45.7 MB in the end (delta: 402.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 26]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; [L15] int x = 2; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L10] d = 1.0 [L22] d += (x == 2) [L24] d += (x > 3) [L26] COND TRUE !(d == 2.0) [L26] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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 [2021-10-29 05:49:19,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:49:22,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:49:22,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:49:22,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:49:22,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:49:22,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:49:22,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:49:22,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:49:22,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:49:22,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:49:22,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:49:22,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:49:22,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:49:22,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:49:22,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:49:22,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:49:22,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:49:22,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:49:22,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:49:22,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:49:22,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:49:22,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:49:22,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:49:22,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:49:22,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:49:22,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:49:22,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:49:22,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:49:22,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:49:22,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:49:22,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:49:22,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:49:22,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:49:22,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:49:22,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:49:22,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:49:22,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:49:22,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:49:22,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:49:22,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:49:22,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:49:22,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:49:22,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:49:22,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:49:22,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:49:22,511 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:49:22,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:49:22,512 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:49:22,512 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:49:22,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:49:22,513 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:49:22,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:49:22,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:49:22,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:49:22,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:49:22,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:49:22,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:49:22,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:49:22,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:49:22,519 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:49:22,520 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:49:22,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:49:22,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:49:22,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:49:22,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:49:22,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:49:22,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:49:22,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:49:22,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:22,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:49:22,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:49:22,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:49:22,524 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:49:22,524 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:49:22,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:49:22,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:49:22,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:49:22,526 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_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-10-29 05:49:22,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:49:22,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:49:22,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:49:22,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:49:22,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:49:22,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-10-29 05:49:23,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/108730f1a/5dd138137ac94d8680c33ea6d6261cb1/FLAG48b761317 [2021-10-29 05:49:23,618 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:49:23,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-10-29 05:49:23,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/108730f1a/5dd138137ac94d8680c33ea6d6261cb1/FLAG48b761317 [2021-10-29 05:49:24,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/data/108730f1a/5dd138137ac94d8680c33ea6d6261cb1 [2021-10-29 05:49:24,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:49:24,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:49:24,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:24,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:49:24,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:49:24,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3213b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24, skipping insertion in model container [2021-10-29 05:49:24,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:49:24,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:49:24,258 WARN L228 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_72ccbee9-3a67-4298-a130-94affafea51a/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-10-29 05:49:24,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:24,279 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:49:24,334 WARN L228 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_72ccbee9-3a67-4298-a130-94affafea51a/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-10-29 05:49:24,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:49:24,377 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:49:24,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24 WrapperNode [2021-10-29 05:49:24,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:49:24,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:24,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:49:24,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:49:24,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:49:24,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:49:24,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:49:24,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:49:24,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:49:24,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:49:24,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:49:24,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:49:24,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (1/1) ... [2021-10-29 05:49:24,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:49:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:49:24,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:49:24,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:49:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:49:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:49:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:49:24,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:49:26,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:49:26,491 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:49:26,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:26 BoogieIcfgContainer [2021-10-29 05:49:26,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:49:26,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:49:26,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:49:26,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:49:26,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:49:24" (1/3) ... [2021-10-29 05:49:26,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae78cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:26, skipping insertion in model container [2021-10-29 05:49:26,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:49:24" (2/3) ... [2021-10-29 05:49:26,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae78cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:49:26, skipping insertion in model container [2021-10-29 05:49:26,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:26" (3/3) ... [2021-10-29 05:49:26,509 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-10-29 05:49:26,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:49:26,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:49:26,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:49:26,573 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:49:26,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:49:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-10-29 05:49:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:49:26,598 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:49:26,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:49:26,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:49:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:49:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-10-29 05:49:26,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:49:26,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389578028] [2021-10-29 05:49:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:49:26,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:49:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:49:26,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:49:26,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:49:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:49:27,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:49:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:49:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:49:27,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:49:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:49:42,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:49:42,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389578028] [2021-10-29 05:49:43,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389578028] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:49:43,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:49:43,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:49:43,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298896947] [2021-10-29 05:49:43,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:49:43,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:49:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:49:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:49:43,026 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2021-10-29 05:49:55,398 WARN L207 SmtUtils]: Spent 7.28 s on a formula simplification. DAG size of input: 32 DAG size of output: 20 [2021-10-29 05:50:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:50:00,416 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-29 05:50:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:50:00,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) Word has length 7 [2021-10-29 05:50:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:50:00,426 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:50:00,426 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:50:00,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:50:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:50:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:50:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-29 05:50:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:50:00,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-29 05:50:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:50:00,453 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:50:00,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2021-10-29 05:50:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:50:00,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:50:00,456 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:50:00,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 05:50:00,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:50:00,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:50:00,671 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:50:00,671 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:50:00,672 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:50:00,672 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:50:00,672 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-29 05:50:00,672 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-29 05:50:00,673 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-10-29 05:50:00,673 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-10-29 05:50:00,673 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2021-10-29 05:50:00,674 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 27) no Hoare annotation was computed. [2021-10-29 05:50:00,674 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 11) no Hoare annotation was computed. [2021-10-29 05:50:00,678 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:50:00,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:50:00,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:50:00 BoogieIcfgContainer [2021-10-29 05:50:00,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:50:00,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:50:00,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:50:00,686 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:50:00,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:49:26" (3/4) ... [2021-10-29 05:50:00,691 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:50:00,704 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-29 05:50:00,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:50:00,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:50:00,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:50:00,753 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:50:00,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:50:00,758 INFO L168 Benchmark]: Toolchain (without parser) took 36748.95 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.5 MB in the beginning and 44.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:00,758 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:50:00,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.80 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 43.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:00,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.32 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:50:00,765 INFO L168 Benchmark]: Boogie Preprocessor took 58.20 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 41.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:50:00,767 INFO L168 Benchmark]: RCFGBuilder took 2002.11 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 32.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:00,769 INFO L168 Benchmark]: TraceAbstraction took 34189.49 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 31.7 MB in the beginning and 47.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:00,769 INFO L168 Benchmark]: Witness Printer took 70.47 ms. Allocated memory is still 79.7 MB. Free memory was 46.5 MB in the beginning and 44.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:00,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.80 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 43.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.32 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.20 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 41.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2002.11 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 32.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34189.49 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 31.7 MB in the beginning and 47.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Witness Printer took 70.47 ms. Allocated memory is still 79.7 MB. Free memory was 46.5 MB in the beginning and 44.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 18 SDslu, 16 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 3 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:50:00,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ccbee9-3a67-4298-a130-94affafea51a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...