./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL --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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:31:52,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:31:52,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:31:52,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:31:52,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:31:52,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:31:52,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:31:52,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:31:52,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:31:52,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:31:52,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:31:52,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:31:52,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:31:52,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:31:52,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:31:52,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:31:52,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:31:52,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:31:52,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:31:52,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:31:52,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:31:52,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:31:52,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:31:52,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:31:52,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:31:52,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:31:52,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:31:52,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:31:52,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:31:52,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:31:52,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:31:52,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:31:52,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:31:52,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:31:52,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:31:52,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:31:52,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:31:52,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:31:52,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:31:52,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:31:52,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:31:52,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:31:52,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:31:52,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:31:52,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:31:52,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:31:52,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:31:52,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:31:52,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:31:52,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:31:52,653 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:31:52,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:31:52,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:31:52,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:31:52,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:31:52,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:31:52,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:31:52,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:31:52,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:31:52,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:31:52,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:31:52,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:31:52,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:31:52,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:31:52,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:31:52,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:31:52,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:31:52,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:31:52,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:31:52,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:31:52,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:31:52,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:31:52,658 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:31:52,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:31:52,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:31:52,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:31:52,659 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_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2021-11-19 05:31:53,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:31:53,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:31:53,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:31:53,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:31:53,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:31:53,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2021-11-19 05:31:53,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/fd13f5c91/53d73fa2dbb34e6391b999b254634bc2/FLAG1d1ee237b [2021-11-19 05:31:53,679 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:31:53,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2021-11-19 05:31:53,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/fd13f5c91/53d73fa2dbb34e6391b999b254634bc2/FLAG1d1ee237b [2021-11-19 05:31:54,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/fd13f5c91/53d73fa2dbb34e6391b999b254634bc2 [2021-11-19 05:31:54,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:31:54,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:31:54,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:31:54,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:31:54,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:31:54,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c371ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54, skipping insertion in model container [2021-11-19 05:31:54,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:31:54,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:31:54,292 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_b70e2566-3994-4430-ba57-e19fa46c62eb/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2021-11-19 05:31:54,305 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:31:54,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:31:54,328 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_b70e2566-3994-4430-ba57-e19fa46c62eb/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2021-11-19 05:31:54,331 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:31:54,346 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:31:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54 WrapperNode [2021-11-19 05:31:54,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:31:54,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:31:54,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:31:54,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:31:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,385 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-11-19 05:31:54,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:31:54,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:31:54,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:31:54,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:31:54,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:31:54,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:31:54,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:31:54,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:31:54,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (1/1) ... [2021-11-19 05:31:54,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:31:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:31:54,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:31:54,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:31:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:31:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:31:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:31:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:31:54,595 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:31:54,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:31:54,743 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:31:54,750 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:31:54,751 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:31:54,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:31:54 BoogieIcfgContainer [2021-11-19 05:31:54,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:31:54,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:31:54,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:31:54,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:31:54,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:31:54" (1/3) ... [2021-11-19 05:31:54,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4285408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:31:54, skipping insertion in model container [2021-11-19 05:31:54,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:54" (2/3) ... [2021-11-19 05:31:54,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4285408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:31:54, skipping insertion in model container [2021-11-19 05:31:54,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:31:54" (3/3) ... [2021-11-19 05:31:54,769 INFO L111 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2021-11-19 05:31:54,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:31:54,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:31:54,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:31:54,869 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 [2021-11-19 05:31:54,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:31:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 05:31:54,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:54,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:31:54,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-11-19 05:31:54,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:54,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45930790] [2021-11-19 05:31:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:54,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:55,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:31:55,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45930790] [2021-11-19 05:31:55,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45930790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:31:55,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:31:55,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:31:55,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915394577] [2021-11-19 05:31:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:31:55,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:31:55,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:31:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:31:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:31:55,187 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-19 05:31:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:31:55,205 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-19 05:31:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:31:55,208 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 [2021-11-19 05:31:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:31:55,218 INFO L225 Difference]: With dead ends: 19 [2021-11-19 05:31:55,219 INFO L226 Difference]: Without dead ends: 7 [2021-11-19 05:31:55,223 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 [2021-11-19 05:31:55,228 INFO L933 BasicCegarLoop]: 10 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, 10 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 [2021-11-19 05:31:55,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:31:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-19 05:31:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-19 05:31:55,268 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) [2021-11-19 05:31:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-19 05:31:55,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-19 05:31:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:31:55,271 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-19 05:31:55,271 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) [2021-11-19 05:31:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-19 05:31:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 05:31:55,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:55,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:31:55,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:31:55,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-11-19 05:31:55,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:55,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032369012] [2021-11-19 05:31:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:55,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:31:55,320 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:31:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:31:55,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:31:55,389 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:31:55,394 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:31:55,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:31:55,402 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:31:55,408 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:31:55,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:31:55 BoogieIcfgContainer [2021-11-19 05:31:55,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:31:55,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:31:55,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:31:55,458 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:31:55,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:31:54" (3/4) ... [2021-11-19 05:31:55,464 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:31:55,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:31:55,468 INFO L158 Benchmark]: Toolchain (without parser) took 1437.61ms. Allocated memory is still 119.5MB. Free memory was 79.7MB in the beginning and 59.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2021-11-19 05:31:55,468 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 119.5MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:55,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.57ms. Allocated memory is still 119.5MB. Free memory was 79.5MB in the beginning and 93.7MB in the end (delta: -14.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:31:55,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.98ms. Allocated memory is still 119.5MB. Free memory was 93.7MB in the beginning and 92.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:31:55,474 INFO L158 Benchmark]: Boogie Preprocessor took 23.45ms. Allocated memory is still 119.5MB. Free memory was 92.4MB in the beginning and 91.4MB in the end (delta: 988.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:31:55,480 INFO L158 Benchmark]: RCFGBuilder took 344.17ms. Allocated memory is still 119.5MB. Free memory was 91.4MB in the beginning and 82.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:31:55,481 INFO L158 Benchmark]: TraceAbstraction took 698.16ms. Allocated memory is still 119.5MB. Free memory was 81.9MB in the beginning and 60.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-19 05:31:55,482 INFO L158 Benchmark]: Witness Printer took 8.30ms. Allocated memory is still 119.5MB. Free memory was 60.2MB in the beginning and 59.9MB in the end (delta: 243.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:55,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 119.5MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.57ms. Allocated memory is still 119.5MB. Free memory was 79.5MB in the beginning and 93.7MB in the end (delta: -14.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.98ms. Allocated memory is still 119.5MB. Free memory was 93.7MB in the beginning and 92.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.45ms. Allocated memory is still 119.5MB. Free memory was 92.4MB in the beginning and 91.4MB in the end (delta: 988.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 344.17ms. Allocated memory is still 119.5MB. Free memory was 91.4MB in the beginning and 82.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 698.16ms. Allocated memory is still 119.5MB. Free memory was 81.9MB in the beginning and 60.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 8.30ms. Allocated memory is still 119.5MB. Free memory was 60.2MB in the beginning and 59.9MB in the end (delta: 243.5kB). 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: 11]: 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 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 10 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, 10 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=11occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-11-19 05:31:55,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/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 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_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL --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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:31:58,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:31:58,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:31:58,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:31:58,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:31:58,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:31:58,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:31:58,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:31:58,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:31:58,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:31:58,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:31:58,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:31:58,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:31:58,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:31:58,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:31:58,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:31:58,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:31:58,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:31:58,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:31:58,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:31:58,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:31:58,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:31:58,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:31:58,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:31:58,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:31:58,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:31:58,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:31:58,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:31:58,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:31:58,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:31:58,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:31:58,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:31:58,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:31:58,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:31:58,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:31:58,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:31:58,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:31:58,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:31:58,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:31:58,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:31:58,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:31:58,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:31:58,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:31:58,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:31:58,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:31:58,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:31:58,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:31:58,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:31:58,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:31:58,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:31:58,836 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:31:58,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:31:58,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:31:58,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:31:58,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:31:58,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:31:58,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:31:58,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:31:58,839 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:31:58,839 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:31:58,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:31:58,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:31:58,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:31:58,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:31:58,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:31:58,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:31:58,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:31:58,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:31:58,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:31:58,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:31:58,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:31:58,843 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:31:58,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:31:58,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:31:58,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:31:58,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:31:58,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:31:58,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:31:58,845 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_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2021-11-19 05:31:59,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:31:59,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:31:59,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:31:59,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:31:59,428 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:31:59,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2021-11-19 05:31:59,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/e979f4447/1da64126e36d4213a98f59e07e4b3d85/FLAGbde1849e4 [2021-11-19 05:32:00,143 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:32:00,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2021-11-19 05:32:00,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/e979f4447/1da64126e36d4213a98f59e07e4b3d85/FLAGbde1849e4 [2021-11-19 05:32:00,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/data/e979f4447/1da64126e36d4213a98f59e07e4b3d85 [2021-11-19 05:32:00,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:32:00,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:32:00,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:32:00,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:32:00,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:32:00,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff8d84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00, skipping insertion in model container [2021-11-19 05:32:00,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:32:00,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:32:00,700 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_b70e2566-3994-4430-ba57-e19fa46c62eb/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2021-11-19 05:32:00,714 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:32:00,728 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:32:00,745 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_b70e2566-3994-4430-ba57-e19fa46c62eb/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2021-11-19 05:32:00,750 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:32:00,769 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:32:00,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00 WrapperNode [2021-11-19 05:32:00,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:32:00,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:32:00,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:32:00,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:32:00,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,872 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-11-19 05:32:00,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:32:00,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:32:00,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:32:00,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:32:00,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:32:00,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:32:00,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:32:00,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:32:00,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (1/1) ... [2021-11-19 05:32:00,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:32:00,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:32:00,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:32:00,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:32:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:32:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:32:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:32:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:32:01,118 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:32:01,120 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:32:01,842 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:32:01,848 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:32:01,848 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:32:01,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:01 BoogieIcfgContainer [2021-11-19 05:32:01,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:32:01,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:32:01,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:32:01,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:32:01,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:32:00" (1/3) ... [2021-11-19 05:32:01,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb25411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:01, skipping insertion in model container [2021-11-19 05:32:01,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:00" (2/3) ... [2021-11-19 05:32:01,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb25411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:01, skipping insertion in model container [2021-11-19 05:32:01,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:01" (3/3) ... [2021-11-19 05:32:01,883 INFO L111 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2021-11-19 05:32:01,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:32:01,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:32:01,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:32:01,958 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 [2021-11-19 05:32:01,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:32:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:32:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 05:32:01,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:01,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:32:01,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:32:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-11-19 05:32:02,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:32:02,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721719746] [2021-11-19 05:32:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:02,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:32:02,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:32:02,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:32:02,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:32:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:02,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:32:02,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:32:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:02,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:32:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:02,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:32:02,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721719746] [2021-11-19 05:32:02,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721719746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:02,340 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:02,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:32:02,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656538809] [2021-11-19 05:32:02,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:02,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:32:02,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:32:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:32:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:32:02,389 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-19 05:32:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:02,407 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-19 05:32:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:32:02,412 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 [2021-11-19 05:32:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:02,423 INFO L225 Difference]: With dead ends: 19 [2021-11-19 05:32:02,423 INFO L226 Difference]: Without dead ends: 7 [2021-11-19 05:32:02,428 INFO L932 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 [2021-11-19 05:32:02,436 INFO L933 BasicCegarLoop]: 10 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, 10 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 [2021-11-19 05:32:02,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:32:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-19 05:32:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-19 05:32:02,478 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) [2021-11-19 05:32:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-19 05:32:02,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-19 05:32:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:02,481 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-19 05:32:02,482 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) [2021-11-19 05:32:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-19 05:32:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 05:32:02,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:02,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:32:02,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:32:02,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:32:02,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:32:02,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:02,702 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-11-19 05:32:02,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:32:02,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870091699] [2021-11-19 05:32:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:02,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:32:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:32:02,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:32:02,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:32:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:32:02,823 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:32:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:32:02,926 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 05:32:02,927 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:32:02,929 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:32:02,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 05:32:03,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:32:03,135 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:32:03,139 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:32:03,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:32:03 BoogieIcfgContainer [2021-11-19 05:32:03,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:32:03,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:32:03,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:32:03,177 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:32:03,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:01" (3/4) ... [2021-11-19 05:32:03,180 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:32:03,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:32:03,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:32:03,235 INFO L158 Benchmark]: Toolchain (without parser) took 2764.65ms. Allocated memory is still 88.1MB. Free memory was 68.7MB in the beginning and 70.9MB in the end (delta: -2.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-11-19 05:32:03,236 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 54.5MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:32:03,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.37ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 58.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:32:03,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.29ms. Allocated memory is still 88.1MB. Free memory was 58.3MB in the beginning and 71.7MB in the end (delta: -13.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:32:03,239 INFO L158 Benchmark]: Boogie Preprocessor took 54.31ms. Allocated memory is still 88.1MB. Free memory was 71.7MB in the beginning and 70.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:32:03,240 INFO L158 Benchmark]: RCFGBuilder took 920.14ms. Allocated memory is still 88.1MB. Free memory was 70.7MB in the beginning and 62.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:32:03,240 INFO L158 Benchmark]: TraceAbstraction took 1297.54ms. Allocated memory is still 88.1MB. Free memory was 61.8MB in the beginning and 39.2MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-19 05:32:03,241 INFO L158 Benchmark]: Witness Printer took 57.00ms. Allocated memory is still 88.1MB. Free memory was 39.0MB in the beginning and 70.9MB in the end (delta: -31.9MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-19 05:32:03,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 54.5MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.37ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 58.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.29ms. Allocated memory is still 88.1MB. Free memory was 58.3MB in the beginning and 71.7MB in the end (delta: -13.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.31ms. Allocated memory is still 88.1MB. Free memory was 71.7MB in the beginning and 70.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 920.14ms. Allocated memory is still 88.1MB. Free memory was 70.7MB in the beginning and 62.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1297.54ms. Allocated memory is still 88.1MB. Free memory was 61.8MB in the beginning and 39.2MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 57.00ms. Allocated memory is still 88.1MB. Free memory was 39.0MB in the beginning and 70.9MB in the end (delta: -31.9MB). Peak memory consumption was 6.2MB. 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: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, 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, 10 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, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 23 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! [2021-11-19 05:32:03,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70e2566-3994-4430-ba57-e19fa46c62eb/bin/uautomizer-ZXIjhQolGL/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE