./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-2.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_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/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_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/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_bbc9bfe9-1443-43d0-a943-40280c144609/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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb .................................................................................................................................................................................................................................................. 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_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/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_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/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_bbc9bfe9-1443-43d0-a943-40280c144609/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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb ................................................................................................................................................................................................................................................................................................................................................. 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 05:36:58,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:36:58,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:36:58,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:36:58,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:36:58,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:36:58,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:36:58,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:36:58,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:36:58,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:36:58,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:36:58,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:36:58,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:36:58,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:36:58,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:36:58,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:36:58,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:36:58,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:36:58,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:36:58,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:36:58,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:36:58,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:36:58,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:36:58,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:36:58,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:36:58,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:36:58,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:36:58,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:36:58,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:36:58,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:36:58,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:36:58,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:36:58,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:36:58,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:36:58,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:36:58,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:36:58,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:36:58,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:36:58,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:36:58,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:36:58,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:36:58,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:36:58,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:36:58,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:36:58,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:36:58,530 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:36:58,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:36:58,531 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:36:58,531 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:36:58,532 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:36:58,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:36:58,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:36:58,533 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:36:58,533 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:36:58,533 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:36:58,534 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:36:58,534 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:36:58,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:36:58,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:36:58,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:36:58,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:36:58,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:36:58,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:36:58,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:36:58,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:36:58,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:36:58,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:36:58,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:36:58,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:36:58,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:36:58,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:36:58,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:36:58,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:36:58,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:36:58,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:36:58,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:36:58,547 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:36:58,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:36:58,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:36:58,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:36:58,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:36:58,549 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_bbc9bfe9-1443-43d0-a943-40280c144609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2021-10-29 05:36:58,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:36:58,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:36:58,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:36:58,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:36:58,853 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:36:58,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-29 05:36:58,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/f9f68ed80/cd959d4d18eb4480ad518b385754f25e/FLAG9580866cc [2021-10-29 05:36:59,446 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:36:59,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-29 05:36:59,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/f9f68ed80/cd959d4d18eb4480ad518b385754f25e/FLAG9580866cc [2021-10-29 05:36:59,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/f9f68ed80/cd959d4d18eb4480ad518b385754f25e [2021-10-29 05:36:59,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:36:59,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:36:59,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:36:59,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:36:59,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:36:59,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:36:59" (1/1) ... [2021-10-29 05:36:59,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d496d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:59, skipping insertion in model container [2021-10-29 05:36:59,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:36:59" (1/1) ... [2021-10-29 05:36:59,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:36:59,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:37:00,026 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_bbc9bfe9-1443-43d0-a943-40280c144609/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-29 05:37:00,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:37:00,047 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:37:00,061 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_bbc9bfe9-1443-43d0-a943-40280c144609/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-29 05:37:00,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:37:00,078 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:37:00,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00 WrapperNode [2021-10-29 05:37:00,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:37:00,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:37:00,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:37:00,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:37:00,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:37:00,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:37:00,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:37:00,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:37:00,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:37:00,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:37:00,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:37:00,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:37:00,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (1/1) ... [2021-10-29 05:37:00,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:37:00,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:37:00,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:37:00,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:37:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:37:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:37:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:37:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:37:00,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:37:00,554 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:37:00,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:00 BoogieIcfgContainer [2021-10-29 05:37:00,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:37:00,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:37:00,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:37:00,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:37:00,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:36:59" (1/3) ... [2021-10-29 05:37:00,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431bf8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:37:00, skipping insertion in model container [2021-10-29 05:37:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:00" (2/3) ... [2021-10-29 05:37:00,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431bf8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:37:00, skipping insertion in model container [2021-10-29 05:37:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:00" (3/3) ... [2021-10-29 05:37:00,593 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-10-29 05:37:00,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:37:00,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:37:00,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:37:00,688 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 05:37:00,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:37:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2021-10-29 05:37:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:37:00,724 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:37:00,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:37:00,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:37:00,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:37:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1947436, now seen corresponding path program 1 times [2021-10-29 05:37:00,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:37:00,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924643572] [2021-10-29 05:37:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:37:00,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:37:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:37:00,929 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:37:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:37:01,003 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:37:01,005 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:37:01,006 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:37:01,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:37:01,013 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:37:01,016 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:37:01,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:37:01 BoogieIcfgContainer [2021-10-29 05:37:01,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:37:01,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:37:01,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:37:01,043 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:37:01,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:00" (3/4) ... [2021-10-29 05:37:01,047 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:37:01,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:37:01,052 INFO L168 Benchmark]: Toolchain (without parser) took 1210.20 ms. Allocated memory is still 104.9 MB. Free memory was 71.9 MB in the beginning and 54.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:01,053 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:01,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.38 ms. Allocated memory is still 104.9 MB. Free memory was 71.7 MB in the beginning and 81.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:01,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:01,057 INFO L168 Benchmark]: Boogie Preprocessor took 22.37 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:01,058 INFO L168 Benchmark]: RCFGBuilder took 429.33 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 68.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:01,059 INFO L168 Benchmark]: TraceAbstraction took 468.01 ms. Allocated memory is still 104.9 MB. Free memory was 67.7 MB in the beginning and 54.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:01,066 INFO L168 Benchmark]: Witness Printer took 6.29 ms. Allocated memory is still 104.9 MB. Free memory was 54.3 MB in the beginning and 54.0 MB in the end (delta: 385.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:01,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.38 ms. Allocated memory is still 104.9 MB. Free memory was 71.7 MB in the beginning and 81.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.37 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 429.33 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 68.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 468.01 ms. Allocated memory is still 104.9 MB. Free memory was 67.7 MB in the beginning and 54.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.29 ms. Allocated memory is still 104.9 MB. Free memory was 54.3 MB in the beginning and 54.0 MB in the end (delta: 385.1 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] COND TRUE x <= -1e-20f || x >= 1e-20f [L23] y = x * x [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=8occurred 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, 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 [2021-10-29 05:37:01,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/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 05:37:03,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:37:03,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:37:03,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:37:03,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:37:03,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:37:03,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:37:03,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:37:03,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:37:03,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:37:03,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:37:03,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:37:03,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:37:03,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:37:03,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:37:03,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:37:03,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:37:03,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:37:03,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:37:03,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:37:03,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:37:03,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:37:03,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:37:03,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:37:03,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:37:03,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:37:03,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:37:03,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:37:03,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:37:03,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:37:03,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:37:03,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:37:03,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:37:03,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:37:03,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:37:03,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:37:03,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:37:03,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:37:03,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:37:03,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:37:03,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:37:03,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:37:03,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:37:03,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:37:03,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:37:03,986 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:37:03,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:37:03,986 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:37:03,986 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:37:03,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:37:03,987 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:37:03,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:37:03,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:37:03,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:37:03,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:37:03,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:37:03,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:37:03,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:37:03,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:37:03,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:37:03,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:37:03,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:37:03,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:37:03,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:37:03,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:37:03,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:37:03,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:37:03,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:37:03,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:37:03,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:37:03,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:37:03,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:37:03,996 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:37:03,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:37:03,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:37:03,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:37:03,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:37:03,997 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_bbc9bfe9-1443-43d0-a943-40280c144609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2021-10-29 05:37:04,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:37:04,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:37:04,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:37:04,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:37:04,500 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:37:04,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-29 05:37:04,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/ad4bcb87f/5dd3b5772be84ab49546a72bd934f578/FLAG5f1fad887 [2021-10-29 05:37:05,204 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:37:05,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-29 05:37:05,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/ad4bcb87f/5dd3b5772be84ab49546a72bd934f578/FLAG5f1fad887 [2021-10-29 05:37:05,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/data/ad4bcb87f/5dd3b5772be84ab49546a72bd934f578 [2021-10-29 05:37:05,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:37:05,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:37:05,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:37:05,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:37:05,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:37:05,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a408827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05, skipping insertion in model container [2021-10-29 05:37:05,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:37:05,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:37:05,780 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_bbc9bfe9-1443-43d0-a943-40280c144609/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-29 05:37:05,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:37:05,807 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:37:05,843 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_bbc9bfe9-1443-43d0-a943-40280c144609/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-29 05:37:05,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:37:05,882 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:37:05,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05 WrapperNode [2021-10-29 05:37:05,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:37:05,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:37:05,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:37:05,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:37:05,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:37:05,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:37:05,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:37:05,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:37:05,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:37:05,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:37:05,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:37:05,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:37:05,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (1/1) ... [2021-10-29 05:37:05,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:37:05,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:37:06,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:37:06,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:37:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:37:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:37:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:37:08,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:37:08,320 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:37:08,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:08 BoogieIcfgContainer [2021-10-29 05:37:08,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:37:08,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:37:08,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:37:08,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:37:08,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:37:05" (1/3) ... [2021-10-29 05:37:08,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18465c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:37:08, skipping insertion in model container [2021-10-29 05:37:08,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:05" (2/3) ... [2021-10-29 05:37:08,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18465c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:37:08, skipping insertion in model container [2021-10-29 05:37:08,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:08" (3/3) ... [2021-10-29 05:37:08,332 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-10-29 05:37:08,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:37:08,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:37:08,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:37:08,419 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 05:37:08,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:37:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 05:37:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:37:08,443 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:37:08,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:37:08,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:37:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:37:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2021-10-29 05:37:08,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:37:08,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124739756] [2021-10-29 05:37:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:37:08,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:37:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:37:08,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:37:08,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:37:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:37:08,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:37:08,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:37:08,733 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 05:37:08,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:37:08,767 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 05:37:08,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:37:08,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124739756] [2021-10-29 05:37:08,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124739756] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:37:08,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:37:08,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:37:08,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405720899] [2021-10-29 05:37:08,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:37:08,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:37:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:37:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:37:08,809 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:37:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:37:08,827 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-29 05:37:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:37:08,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2021-10-29 05:37:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:37:08,839 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:37:08,839 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 05:37:08,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:37:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 05:37:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 05:37:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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 05:37:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-29 05:37:08,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-29 05:37:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:37:08,891 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-29 05:37:08,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:37:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-29 05:37:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:37:08,893 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:37:08,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:37:08,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:37:09,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:37:09,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:37:09,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:37:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2021-10-29 05:37:09,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:37:09,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825424468] [2021-10-29 05:37:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:37:09,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:37:09,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:37:09,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:37:09,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:37:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:37:09,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:37:09,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:37:11,918 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 05:37:11,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:37:13,584 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 05:37:13,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:37:13,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825424468] [2021-10-29 05:37:13,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825424468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:37:13,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:37:13,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [] total 7 [2021-10-29 05:37:13,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269485951] [2021-10-29 05:37:13,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:37:13,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:37:13,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:37:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:37:13,592 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:37:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:37:14,048 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-29 05:37:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:37:14,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:37:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:37:14,049 INFO L225 Difference]: With dead ends: 7 [2021-10-29 05:37:14,049 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:37:14,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:37:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:37:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:37:14,051 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 05:37:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:37:14,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-29 05:37:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:37:14,052 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:37:14,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:37:14,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:37:14,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:37:14,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:37:14,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:37:14,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:37:14,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:37:14,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:37:14,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:37:14,317 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:37:14,318 INFO L860 garLoopResultBuilder]: At program point L27(lines 15 28) the Hoare annotation is: true [2021-10-29 05:37:14,318 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-29 05:37:14,319 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-10-29 05:37:14,319 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-29 05:37:14,319 INFO L860 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2021-10-29 05:37:14,320 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:37:14,320 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:37:14,321 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:37:14,321 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-29 05:37:14,322 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-10-29 05:37:14,322 INFO L857 garLoopResultBuilder]: For program point L10(lines 22 26) no Hoare annotation was computed. [2021-10-29 05:37:14,326 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:37:14,328 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:37:14,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:37:14 BoogieIcfgContainer [2021-10-29 05:37:14,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:37:14,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:37:14,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:37:14,340 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:37:14,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:37:08" (3/4) ... [2021-10-29 05:37:14,345 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:37:14,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:37:14,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:37:14,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:37:14,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:37:14,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:37:14,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:37:14,430 INFO L168 Benchmark]: Toolchain (without parser) took 8839.04 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 30.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:14,431 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:14,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.93 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 45.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:14,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:14,437 INFO L168 Benchmark]: Boogie Preprocessor took 35.48 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 43.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:14,438 INFO L168 Benchmark]: RCFGBuilder took 2357.25 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 33.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:14,440 INFO L168 Benchmark]: TraceAbstraction took 6011.88 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 32.9 MB in the end (delta: 184.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:14,441 INFO L168 Benchmark]: Witness Printer took 88.79 ms. Allocated memory is still 62.9 MB. Free memory was 32.9 MB in the beginning and 30.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:14,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.93 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 45.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.48 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 43.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2357.25 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 33.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6011.88 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 32.9 MB in the end (delta: 184.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Witness Printer took 88.79 ms. Allocated memory is still 62.9 MB. Free memory was 32.9 MB in the beginning and 30.5 MB in the end (delta: 2.4 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: 13]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 6 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:37:14,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc9bfe9-1443-43d0-a943-40280c144609/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...