./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:17:48,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:17:48,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:17:48,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:17:48,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:17:48,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:17:48,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:17:48,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:17:48,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:17:48,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:17:48,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:17:48,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:17:48,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:17:48,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:17:48,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:17:48,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:17:48,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:17:48,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:17:48,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:17:48,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:17:48,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:17:48,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:17:48,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:17:48,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:17:48,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:17:48,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:17:48,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:17:48,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:17:48,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:17:48,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:17:48,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:17:48,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:17:48,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:17:48,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:17:48,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:17:48,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:17:48,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:17:48,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:17:48,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:17:48,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:17:48,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:17:48,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:17:48,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:17:48,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:17:48,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:17:48,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:17:48,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:17:48,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:17:48,488 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:17:48,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:17:48,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:17:48,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:17:48,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:17:48,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:17:48,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:17:48,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:17:48,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:17:48,492 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:17:48,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:17:48,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:17:48,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:17:48,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:17:48,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:17:48,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:17:48,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:17:48,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:17:48,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:17:48,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:17:48,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:17:48,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:17:48,496 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:17:48,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:17:48,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:17:48,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:17:48,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2021-11-23 12:17:48,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:17:48,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:17:48,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:17:48,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:17:48,840 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:17:48,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-23 12:17:48,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/d7ac0c133/ad2e794988d24cb8bdc28f8e0131bb04/FLAGcfed9a342 [2021-11-23 12:17:49,523 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:17:49,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-23 12:17:49,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/d7ac0c133/ad2e794988d24cb8bdc28f8e0131bb04/FLAGcfed9a342 [2021-11-23 12:17:49,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/d7ac0c133/ad2e794988d24cb8bdc28f8e0131bb04 [2021-11-23 12:17:49,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:17:49,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:17:49,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:17:49,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:17:49,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:17:49,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:17:49" (1/1) ... [2021-11-23 12:17:49,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bdf546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:49, skipping insertion in model container [2021-11-23 12:17:49,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:17:49" (1/1) ... [2021-11-23 12:17:49,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:17:49,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:17:50,141 WARN L230 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_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-23 12:17:50,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:17:50,173 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:17:50,185 WARN L230 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_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-23 12:17:50,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:17:50,201 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:17:50,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50 WrapperNode [2021-11-23 12:17:50,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:17:50,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:17:50,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:17:50,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:17:50,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,244 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-11-23 12:17:50,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:17:50,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:17:50,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:17:50,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:17:50,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:17:50,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:17:50,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:17:50,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:17:50,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (1/1) ... [2021-11-23 12:17:50,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:17:50,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:17:50,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:17:50,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:17:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:17:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:17:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:17:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:17:50,475 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:17:50,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:17:50,628 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:17:50,635 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:17:50,636 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:17:50,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:50 BoogieIcfgContainer [2021-11-23 12:17:50,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:17:50,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:17:50,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:17:50,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:17:50,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:17:49" (1/3) ... [2021-11-23 12:17:50,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fcb113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:17:50, skipping insertion in model container [2021-11-23 12:17:50,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:50" (2/3) ... [2021-11-23 12:17:50,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fcb113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:17:50, skipping insertion in model container [2021-11-23 12:17:50,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:50" (3/3) ... [2021-11-23 12:17:50,654 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2021-11-23 12:17:50,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:17:50,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:17:50,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:17:50,719 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=PETRI_NET, 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 [2021-11-23 12:17:50,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:17:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-11-23 12:17:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:17:50,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:17:50,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:17:50,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:17:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:17:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2021-11-23 12:17:50,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:17:50,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038209319] [2021-11-23 12:17:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:17:50,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:17:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:17:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:17:50,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:17:50,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038209319] [2021-11-23 12:17:50,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038209319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:17:50,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:17:50,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:17:50,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263892060] [2021-11-23 12:17:50,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:17:50,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:17:50,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:17:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:17:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:17:50,952 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-23 12:17:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:17:50,969 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-23 12:17:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:17:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 [2021-11-23 12:17:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:17:50,981 INFO L225 Difference]: With dead ends: 23 [2021-11-23 12:17:50,981 INFO L226 Difference]: Without dead ends: 8 [2021-11-23 12:17:50,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:17:50,989 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:17:50,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:17:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-23 12:17:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-23 12:17:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-11-23 12:17:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-11-23 12:17:51,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-11-23 12:17:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:17:51,019 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-11-23 12:17:51,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-23 12:17:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-11-23 12:17:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:17:51,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:17:51,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:17:51,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:17:51,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:17:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:17:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2021-11-23 12:17:51,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:17:51,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206127686] [2021-11-23 12:17:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:17:51,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:17:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:17:51,047 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:17:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:17:51,084 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:17:51,085 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:17:51,087 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:17:51,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:17:51,094 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 12:17:51,098 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:17:51,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:17:51 BoogieIcfgContainer [2021-11-23 12:17:51,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:17:51,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:17:51,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:17:51,125 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:17:51,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:50" (3/4) ... [2021-11-23 12:17:51,130 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:17:51,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:17:51,131 INFO L158 Benchmark]: Toolchain (without parser) took 1228.38ms. Allocated memory is still 92.3MB. Free memory was 51.6MB in the beginning and 34.3MB in the end (delta: 17.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-23 12:17:51,132 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:51,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.17ms. Allocated memory is still 92.3MB. Free memory was 51.4MB in the beginning and 68.1MB in the end (delta: -16.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-23 12:17:51,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.35ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 66.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:17:51,134 INFO L158 Benchmark]: Boogie Preprocessor took 40.79ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 65.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:51,145 INFO L158 Benchmark]: RCFGBuilder took 352.68ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 56.8MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:17:51,146 INFO L158 Benchmark]: TraceAbstraction took 479.08ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 34.7MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 12:17:51,146 INFO L158 Benchmark]: Witness Printer took 5.62ms. Allocated memory is still 92.3MB. Free memory was 34.7MB in the beginning and 34.3MB in the end (delta: 448.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:51,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.17ms. Allocated memory is still 92.3MB. Free memory was 51.4MB in the beginning and 68.1MB in the end (delta: -16.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.35ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 66.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.79ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 65.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.68ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 56.8MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 479.08ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 34.7MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.62ms. Allocated memory is still 92.3MB. Free memory was 34.7MB in the beginning and 34.3MB in the end (delta: 448.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x != 0.f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-11-23 12:17:51,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:17:54,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:17:54,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:17:54,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:17:54,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:17:54,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:17:54,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:17:54,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:17:54,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:17:54,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:17:54,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:17:54,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:17:54,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:17:54,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:17:54,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:17:54,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:17:54,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:17:54,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:17:54,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:17:54,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:17:54,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:17:54,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:17:54,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:17:54,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:17:54,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:17:54,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:17:54,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:17:54,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:17:54,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:17:54,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:17:54,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:17:54,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:17:54,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:17:54,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:17:54,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:17:54,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:17:54,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:17:54,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:17:54,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:17:54,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:17:54,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:17:54,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:17:54,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:17:54,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:17:54,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:17:54,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:17:54,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:17:54,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:17:54,275 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:17:54,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:17:54,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:17:54,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:17:54,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:17:54,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:17:54,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:17:54,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:17:54,282 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:17:54,282 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:17:54,282 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:17:54,282 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:17:54,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:17:54,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:17:54,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:17:54,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:17:54,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:17:54,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:17:54,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:17:54,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:17:54,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:17:54,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:17:54,285 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:17:54,286 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:17:54,286 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:17:54,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:17:54,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:17:54,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:17:54,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:17:54,287 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_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2021-11-23 12:17:54,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:17:54,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:17:54,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:17:54,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:17:54,755 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:17:54,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-23 12:17:54,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/31ea422b2/303562cf6f6843a4b347bedac3a16605/FLAG863725647 [2021-11-23 12:17:55,359 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:17:55,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-23 12:17:55,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/31ea422b2/303562cf6f6843a4b347bedac3a16605/FLAG863725647 [2021-11-23 12:17:55,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/data/31ea422b2/303562cf6f6843a4b347bedac3a16605 [2021-11-23 12:17:55,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:17:55,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:17:55,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:17:55,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:17:55,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:17:55,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:17:55" (1/1) ... [2021-11-23 12:17:55,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49acf9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:55, skipping insertion in model container [2021-11-23 12:17:55,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:17:55" (1/1) ... [2021-11-23 12:17:55,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:17:55,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:17:55,987 WARN L230 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_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-23 12:17:56,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:17:56,027 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:17:56,051 WARN L230 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_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-23 12:17:56,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:17:56,074 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:17:56,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56 WrapperNode [2021-11-23 12:17:56,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:17:56,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:17:56,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:17:56,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:17:56,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,129 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2021-11-23 12:17:56,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:17:56,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:17:56,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:17:56,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:17:56,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:17:56,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:17:56,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:17:56,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:17:56,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (1/1) ... [2021-11-23 12:17:56,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:17:56,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:17:56,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:17:56,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:17:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:17:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:17:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:17:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:17:56,384 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:17:56,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:17:57,486 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:17:57,493 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:17:57,493 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:17:57,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:57 BoogieIcfgContainer [2021-11-23 12:17:57,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:17:57,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:17:57,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:17:57,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:17:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:17:55" (1/3) ... [2021-11-23 12:17:57,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aef416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:17:57, skipping insertion in model container [2021-11-23 12:17:57,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:56" (2/3) ... [2021-11-23 12:17:57,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aef416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:17:57, skipping insertion in model container [2021-11-23 12:17:57,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:57" (3/3) ... [2021-11-23 12:17:57,506 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2021-11-23 12:17:57,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:17:57,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:17:57,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:17:57,586 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=PETRI_NET, 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 [2021-11-23 12:17:57,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:17:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-11-23 12:17:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:17:57,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:17:57,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:17:57,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:17:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:17:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2021-11-23 12:17:57,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:17:57,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864102015] [2021-11-23 12:17:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:17:57,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:17:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:17:57,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:17:57,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:17:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:17:57,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 12:17:57,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:17:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:17:57,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:17:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:17:57,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:17:57,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864102015] [2021-11-23 12:17:57,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864102015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:17:57,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:17:57,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:17:57,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327756818] [2021-11-23 12:17:57,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:17:57,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:17:57,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:17:57,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:17:57,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:17:57,946 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-23 12:17:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:17:57,962 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-23 12:17:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:17:57,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 [2021-11-23 12:17:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:17:57,974 INFO L225 Difference]: With dead ends: 23 [2021-11-23 12:17:57,974 INFO L226 Difference]: Without dead ends: 8 [2021-11-23 12:17:57,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:17:57,983 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:17:57,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:17:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-23 12:17:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-23 12:17:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-11-23 12:17:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-11-23 12:17:58,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-11-23 12:17:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:17:58,021 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-11-23 12:17:58,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-23 12:17:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-11-23 12:17:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:17:58,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:17:58,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:17:58,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:17:58,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:17:58,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:17:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:17:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2021-11-23 12:17:58,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:17:58,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046444333] [2021-11-23 12:17:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:17:58,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:17:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:17:58,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:17:58,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:17:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:17:58,340 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:17:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:17:58,429 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-23 12:17:58,430 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:17:58,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:17:58,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:17:58,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:17:58,642 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 12:17:58,645 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:17:58,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:17:58 BoogieIcfgContainer [2021-11-23 12:17:58,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:17:58,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:17:58,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:17:58,672 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:17:58,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:57" (3/4) ... [2021-11-23 12:17:58,675 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 12:17:58,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:17:58,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:17:58,716 INFO L158 Benchmark]: Toolchain (without parser) took 2946.63ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 45.6MB in the end (delta: -11.2MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-11-23 12:17:58,716 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:58,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.61ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 38.9MB in the end (delta: -4.8MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-11-23 12:17:58,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.37ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 37.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:58,718 INFO L158 Benchmark]: Boogie Preprocessor took 56.13ms. Allocated memory is still 56.6MB. Free memory was 37.3MB in the beginning and 36.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:58,719 INFO L158 Benchmark]: RCFGBuilder took 1308.00ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 28.1MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 12:17:58,720 INFO L158 Benchmark]: TraceAbstraction took 1172.93ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.6MB in the beginning and 47.4MB in the end (delta: -19.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:17:58,721 INFO L158 Benchmark]: Witness Printer took 43.31ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 45.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:17:58,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.61ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 38.9MB in the end (delta: -4.8MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.37ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 37.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.13ms. Allocated memory is still 56.6MB. Free memory was 37.3MB in the beginning and 36.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1308.00ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 28.1MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1172.93ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.6MB in the beginning and 47.4MB in the end (delta: -19.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.31ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 45.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x != 0.f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 1 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-23 12:17:58,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78fe0ae9-cc2d-413b-9ff4-74db34de20a3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE