./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:50:27,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:50:27,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:50:27,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:50:27,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:50:27,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:50:27,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:50:27,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:50:27,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:50:27,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:50:27,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:50:27,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:50:27,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:50:27,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:50:27,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:50:27,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:50:27,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:50:27,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:50:27,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:50:27,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:50:27,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:50:27,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:50:27,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:50:27,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:50:27,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:50:27,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:50:27,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:50:27,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:50:27,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:50:27,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:50:27,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:50:27,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:50:27,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:50:27,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:50:27,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:50:27,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:50:27,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:50:27,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:50:27,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:50:27,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:50:27,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:50:27,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:50:27,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:50:27,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:50:27,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:50:27,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:50:27,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:50:27,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:50:27,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:50:27,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:50:27,557 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:50:27,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:50:27,559 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:50:27,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:50:27,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:50:27,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:50:27,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:50:27,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:50:27,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:50:27,561 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:50:27,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:50:27,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:50:27,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:50:27,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:50:27,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:50:27,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:50:27,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:50:27,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:50:27,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:50:27,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:50:27,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:50:27,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:50:27,565 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:50:27,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:50:27,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:50:27,566 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_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2022-11-16 11:50:27,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:50:27,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:50:27,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:50:27,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:50:27,994 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:50:27,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2022-11-16 11:50:28,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/cd8f2fab8/6f2a982d2de84ed3aceb40ba348237f1/FLAG818411944 [2022-11-16 11:50:28,662 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:50:28,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/sv-benchmarks/c/float-benchs/inv_square-1.c [2022-11-16 11:50:28,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/cd8f2fab8/6f2a982d2de84ed3aceb40ba348237f1/FLAG818411944 [2022-11-16 11:50:29,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/cd8f2fab8/6f2a982d2de84ed3aceb40ba348237f1 [2022-11-16 11:50:29,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:50:29,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:50:29,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:50:29,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:50:29,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:50:29,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b5d773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29, skipping insertion in model container [2022-11-16 11:50:29,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:50:29,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:50:29,276 WARN L229 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_c553f1ec-ed89-496a-9dfb-8a77bece873b/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-11-16 11:50:29,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:50:29,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:50:29,317 WARN L229 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_c553f1ec-ed89-496a-9dfb-8a77bece873b/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-11-16 11:50:29,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:50:29,344 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:50:29,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29 WrapperNode [2022-11-16 11:50:29,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:50:29,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:50:29,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:50:29,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:50:29,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,393 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-11-16 11:50:29,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:50:29,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:50:29,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:50:29,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:50:29,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:50:29,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:50:29,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:50:29,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:50:29,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (1/1) ... [2022-11-16 11:50:29,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:50:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:29,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:50:29,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:50:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:50:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:50:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:50:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:50:29,634 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:50:29,637 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:50:29,818 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:50:29,825 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:50:29,826 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:50:29,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:29 BoogieIcfgContainer [2022-11-16 11:50:29,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:50:29,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:50:29,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:50:29,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:50:29,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:50:29" (1/3) ... [2022-11-16 11:50:29,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ccbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:29, skipping insertion in model container [2022-11-16 11:50:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:29" (2/3) ... [2022-11-16 11:50:29,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ccbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:29, skipping insertion in model container [2022-11-16 11:50:29,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:29" (3/3) ... [2022-11-16 11:50:29,844 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2022-11-16 11:50:29,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:50:29,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:50:29,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:50:29,986 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31a4516a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:50:29,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:50:29,992 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) [2022-11-16 11:50:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:50:30,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:30,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:30,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-11-16 11:50:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631548250] [2022-11-16 11:50:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631548250] [2022-11-16 11:50:30,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631548250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:30,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:30,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:30,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856539819] [2022-11-16 11:50:30,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:30,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:50:30,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:50:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:50:30,341 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) [2022-11-16 11:50:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:30,358 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-16 11:50:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:50:30,361 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 [2022-11-16 11:50:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:30,373 INFO L225 Difference]: With dead ends: 23 [2022-11-16 11:50:30,373 INFO L226 Difference]: Without dead ends: 8 [2022-11-16 11:50:30,377 INFO L412 NwaCegarLoop]: 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 [2022-11-16 11:50:30,383 INFO L413 NwaCegarLoop]: 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 [2022-11-16 11:50:30,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:50:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-16 11:50:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-16 11:50:30,422 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) [2022-11-16 11:50:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-11-16 11:50:30,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-11-16 11:50:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:30,426 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-11-16 11:50:30,427 INFO L496 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) [2022-11-16 11:50:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-11-16 11:50:30,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:50:30,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:30,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:50:30,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-11-16 11:50:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:30,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304498444] [2022-11-16 11:50:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:30,483 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:50:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:30,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:50:30,557 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:50:30,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:50:30,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:50:30,569 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:50:30,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:50:30,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:50:30 BoogieIcfgContainer [2022-11-16 11:50:30,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:50:30,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:50:30,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:50:30,597 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:50:30,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:29" (3/4) ... [2022-11-16 11:50:30,601 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:50:30,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:50:30,602 INFO L158 Benchmark]: Toolchain (without parser) took 1590.75ms. Allocated memory is still 136.3MB. Free memory was 107.6MB in the beginning and 77.1MB in the end (delta: 30.5MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-16 11:50:30,603 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:30,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.42ms. Allocated memory is still 136.3MB. Free memory was 107.6MB in the beginning and 112.3MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:50:30,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.51ms. Allocated memory is still 136.3MB. Free memory was 112.3MB in the beginning and 111.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:50:30,605 INFO L158 Benchmark]: Boogie Preprocessor took 40.42ms. Allocated memory is still 136.3MB. Free memory was 111.1MB in the beginning and 110.1MB in the end (delta: 967.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:30,606 INFO L158 Benchmark]: RCFGBuilder took 393.18ms. Allocated memory is still 136.3MB. Free memory was 109.9MB in the beginning and 100.6MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:50:30,606 INFO L158 Benchmark]: TraceAbstraction took 762.60ms. Allocated memory is still 136.3MB. Free memory was 100.2MB in the beginning and 77.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 11:50:30,607 INFO L158 Benchmark]: Witness Printer took 5.16ms. Allocated memory is still 136.3MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:30,610 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 96.5MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.42ms. Allocated memory is still 136.3MB. Free memory was 107.6MB in the beginning and 112.3MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.51ms. Allocated memory is still 136.3MB. Free memory was 112.3MB in the beginning and 111.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.42ms. Allocated memory is still 136.3MB. Free memory was 111.1MB in the beginning and 110.1MB in the end (delta: 967.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.18ms. Allocated memory is still 136.3MB. Free memory was 109.9MB in the beginning and 100.6MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 762.60ms. Allocated memory is still 136.3MB. Free memory was 100.2MB in the beginning and 77.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.16ms. Allocated memory is still 136.3MB. Free memory is still 77.1MB. 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 0.1s SatisfiabilityAnalysisTime, 0.1s 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 [2022-11-16 11:50:30,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:50:33,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:50:33,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:50:33,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:50:33,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:50:33,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:50:33,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:50:33,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:50:33,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:50:33,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:50:33,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:50:33,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:50:33,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:50:33,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:50:33,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:50:33,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:50:33,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:50:33,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:50:33,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:50:33,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:50:33,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:50:33,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:50:33,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:50:33,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:50:33,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:50:33,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:50:33,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:50:33,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:50:33,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:50:33,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:50:33,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:50:33,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:50:33,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:50:33,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:50:33,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:50:33,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:50:33,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:50:33,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:50:33,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:50:33,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:50:33,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:50:33,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 11:50:33,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:50:33,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:50:33,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:50:33,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:50:33,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:50:33,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:50:33,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:50:33,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:50:33,540 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:50:33,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:50:33,540 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:50:33,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:50:33,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:50:33,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:50:33,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:50:33,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:50:33,542 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:50:33,542 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:50:33,542 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:50:33,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:50:33,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:50:33,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:50:33,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:50:33,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:50:33,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:50:33,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:50:33,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:50:33,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:50:33,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:50:33,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:50:33,545 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:50:33,551 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:50:33,552 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:50:33,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:50:33,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:50:33,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:50:33,553 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_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2022-11-16 11:50:34,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:50:34,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:50:34,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:50:34,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:50:34,044 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:50:34,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2022-11-16 11:50:34,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/8bcca6c34/18a30031317a433aa39763b5950c6995/FLAGcc2cb2163 [2022-11-16 11:50:34,712 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:50:34,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/sv-benchmarks/c/float-benchs/inv_square-1.c [2022-11-16 11:50:34,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/8bcca6c34/18a30031317a433aa39763b5950c6995/FLAGcc2cb2163 [2022-11-16 11:50:35,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/data/8bcca6c34/18a30031317a433aa39763b5950c6995 [2022-11-16 11:50:35,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:50:35,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:50:35,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:50:35,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:50:35,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:50:35,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196a85fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35, skipping insertion in model container [2022-11-16 11:50:35,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:50:35,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:50:35,275 WARN L229 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_c553f1ec-ed89-496a-9dfb-8a77bece873b/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-11-16 11:50:35,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:50:35,303 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:50:35,327 WARN L229 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_c553f1ec-ed89-496a-9dfb-8a77bece873b/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-11-16 11:50:35,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:50:35,352 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:50:35,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35 WrapperNode [2022-11-16 11:50:35,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:50:35,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:50:35,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:50:35,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:50:35,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,420 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-11-16 11:50:35,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:50:35,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:50:35,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:50:35,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:50:35,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:50:35,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:50:35,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:50:35,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:50:35,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (1/1) ... [2022-11-16 11:50:35,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:50:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:35,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:50:35,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:50:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:50:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:50:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:50:35,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:50:35,701 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:50:35,704 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:50:37,199 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:50:37,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:50:37,206 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:50:37,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:37 BoogieIcfgContainer [2022-11-16 11:50:37,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:50:37,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:50:37,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:50:37,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:50:37,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:50:35" (1/3) ... [2022-11-16 11:50:37,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328140f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:37, skipping insertion in model container [2022-11-16 11:50:37,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:35" (2/3) ... [2022-11-16 11:50:37,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328140f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:37, skipping insertion in model container [2022-11-16 11:50:37,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:37" (3/3) ... [2022-11-16 11:50:37,221 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2022-11-16 11:50:37,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:50:37,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:50:37,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:50:37,336 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ea3955f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:50:37,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:50:37,342 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) [2022-11-16 11:50:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:50:37,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:37,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:37,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:37,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-11-16 11:50:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:50:37,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210107192] [2022-11-16 11:50:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:37,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:50:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:50:37,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:50:37,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:50:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:37,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:50:37,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:37,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:37,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:50:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210107192] [2022-11-16 11:50:37,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210107192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:37,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:37,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929126429] [2022-11-16 11:50:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:50:37,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:50:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:50:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:50:37,639 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) [2022-11-16 11:50:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:37,656 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-16 11:50:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:50:37,659 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 [2022-11-16 11:50:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:37,669 INFO L225 Difference]: With dead ends: 23 [2022-11-16 11:50:37,669 INFO L226 Difference]: Without dead ends: 8 [2022-11-16 11:50:37,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:50:37,677 INFO L413 NwaCegarLoop]: 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 [2022-11-16 11:50:37,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:50:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-16 11:50:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-16 11:50:37,745 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) [2022-11-16 11:50:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-11-16 11:50:37,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-11-16 11:50:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:37,748 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-11-16 11:50:37,749 INFO L496 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) [2022-11-16 11:50:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-11-16 11:50:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:50:37,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:37,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:37,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 11:50:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:50:37,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-11-16 11:50:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:50:37,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669151676] [2022-11-16 11:50:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:50:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:50:37,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:50:37,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:50:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:38,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:50:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:38,245 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 11:50:38,246 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:50:38,248 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:50:38,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:38,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:50:38,456 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:50:38,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:50:38,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:50:38 BoogieIcfgContainer [2022-11-16 11:50:38,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:50:38,493 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:50:38,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:50:38,493 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:50:38,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:37" (3/4) ... [2022-11-16 11:50:38,497 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 11:50:38,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:50:38,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:50:38,539 INFO L158 Benchmark]: Toolchain (without parser) took 3481.23ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 33.0MB in the beginning and 57.7MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:38,539 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 54.5MB. Free memory is still 35.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:38,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.76ms. Allocated memory is still 54.5MB. Free memory was 32.6MB in the beginning and 38.0MB in the end (delta: -5.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:50:38,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.34ms. Allocated memory is still 54.5MB. Free memory was 38.0MB in the beginning and 36.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:38,541 INFO L158 Benchmark]: Boogie Preprocessor took 60.87ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 35.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:38,542 INFO L158 Benchmark]: RCFGBuilder took 1725.00ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 26.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:50:38,543 INFO L158 Benchmark]: TraceAbstraction took 1280.12ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 25.5MB in the beginning and 59.8MB in the end (delta: -34.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:50:38,543 INFO L158 Benchmark]: Witness Printer took 45.10ms. Allocated memory is still 77.6MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:50:38,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 54.5MB. Free memory is still 35.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.76ms. Allocated memory is still 54.5MB. Free memory was 32.6MB in the beginning and 38.0MB in the end (delta: -5.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.34ms. Allocated memory is still 54.5MB. Free memory was 38.0MB in the beginning and 36.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.87ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 35.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1725.00ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 26.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1280.12ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 25.5MB in the beginning and 59.8MB in the end (delta: -34.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 45.10ms. Allocated memory is still 77.6MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). 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, 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, 6 GetRequests, 6 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-11-16 11:50:38,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c553f1ec-ed89-496a-9dfb-8a77bece873b/bin/uautomizer-tPACEb0tL8/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