./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 ea6a8c5e704811f28f8e849441da11858e0e82f813a23a41c3470eda1c16b043 --- 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 12:18:27,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:18:27,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:18:27,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:18:27,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:18:27,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:18:27,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:18:27,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:18:27,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:18:27,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:18:27,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:18:27,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:18:27,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:18:27,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:18:27,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:18:27,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:18:27,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:18:27,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:18:27,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:18:27,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:18:27,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:18:27,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:18:27,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:18:27,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:18:27,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:18:27,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:18:27,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:18:27,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:18:27,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:18:27,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:18:27,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:18:27,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:18:27,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:18:27,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:18:27,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:18:27,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:18:27,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:18:27,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:18:27,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:18:27,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:18:27,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:18:27,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:18:27,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:18:27,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:18:27,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:18:27,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:18:27,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:18:27,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:18:27,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:18:27,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:18:27,495 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:18:27,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:18:27,496 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:18:27,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:18:27,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:18:27,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:18:27,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:18:27,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:18:27,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:18:27,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:18:27,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:18:27,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:18:27,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:18:27,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:18:27,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:18:27,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:18:27,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:27,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:18:27,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:18:27,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:18:27,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:18:27,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:18:27,502 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:18:27,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:18:27,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:18:27,503 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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea6a8c5e704811f28f8e849441da11858e0e82f813a23a41c3470eda1c16b043 [2022-11-16 12:18:27,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:18:27,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:18:27,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:18:27,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:18:27,848 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:18:27,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/floats-cdfpl/newton_2_2.i [2022-11-16 12:18:27,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/3214fb7f4/5c547bb3b45f4fc2b559e0d0cb75bd63/FLAGd97b3c3ce [2022-11-16 12:18:28,354 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:18:28,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/sv-benchmarks/c/floats-cdfpl/newton_2_2.i [2022-11-16 12:18:28,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/3214fb7f4/5c547bb3b45f4fc2b559e0d0cb75bd63/FLAGd97b3c3ce [2022-11-16 12:18:28,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/3214fb7f4/5c547bb3b45f4fc2b559e0d0cb75bd63 [2022-11-16 12:18:28,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:18:28,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:18:28,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:28,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:18:28,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:18:28,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:28" (1/1) ... [2022-11-16 12:18:28,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf67aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:28, skipping insertion in model container [2022-11-16 12:18:28,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:28" (1/1) ... [2022-11-16 12:18:28,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:18:28,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:18:28,988 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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/sv-benchmarks/c/floats-cdfpl/newton_2_2.i[1743,1756] [2022-11-16 12:18:28,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:28,999 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:18:29,017 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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/sv-benchmarks/c/floats-cdfpl/newton_2_2.i[1743,1756] [2022-11-16 12:18:29,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:29,030 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:18:29,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29 WrapperNode [2022-11-16 12:18:29,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:29,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:29,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:18:29,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:18:29,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,071 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-11-16 12:18:29,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:29,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:18:29,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:18:29,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:18:29,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:18:29,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:18:29,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:18:29,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:18:29,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (1/1) ... [2022-11-16 12:18:29,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:29,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:29,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:18:29,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:18:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:18:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:18:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:18:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 12:18:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 12:18:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:18:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:18:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:18:29,271 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:18:29,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:18:29,441 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:18:29,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:18:29,447 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:18:29,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:29 BoogieIcfgContainer [2022-11-16 12:18:29,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:18:29,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:18:29,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:18:29,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:18:29,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:28" (1/3) ... [2022-11-16 12:18:29,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a3d27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:29, skipping insertion in model container [2022-11-16 12:18:29,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:29" (2/3) ... [2022-11-16 12:18:29,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a3d27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:29, skipping insertion in model container [2022-11-16 12:18:29,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:29" (3/3) ... [2022-11-16 12:18:29,462 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_2.i [2022-11-16 12:18:29,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:18:29,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:18:29,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:18:29,536 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;@44343dd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:18:29,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:18:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:18:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:18:29,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:29,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:29,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-11-16 12:18:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:29,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140745586] [2022-11-16 12:18:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:18:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:18:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:18:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:18:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:18:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140745586] [2022-11-16 12:18:29,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140745586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:29,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:29,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:18:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953812985] [2022-11-16 12:18:29,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:29,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:18:29,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:18:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:18:29,879 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:18:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:29,901 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-16 12:18:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:18:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-11-16 12:18:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:29,917 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:18:29,918 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:18:29,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:18:29,925 INFO L413 NwaCegarLoop]: 24 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, 24 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 12:18:29,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:18:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:18:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:18:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:18:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-16 12:18:29,968 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-11-16 12:18:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:29,968 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-16 12:18:29,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:18:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-16 12:18:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:18:29,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:29,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:29,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:18:29,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:29,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-11-16 12:18:29,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:29,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185919161] [2022-11-16 12:18:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:18:29,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:18:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:18:30,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:18:30,039 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:18:30,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:18:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:18:30,046 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:18:30,050 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:18:30,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:18:30 BoogieIcfgContainer [2022-11-16 12:18:30,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:18:30,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:18:30,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:18:30,094 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:18:30,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:29" (3/4) ... [2022-11-16 12:18:30,098 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:18:30,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:18:30,100 INFO L158 Benchmark]: Toolchain (without parser) took 1348.24ms. Allocated memory is still 130.0MB. Free memory was 93.7MB in the beginning and 66.6MB in the end (delta: 27.1MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-16 12:18:30,101 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:18:30,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.44ms. Allocated memory is still 130.0MB. Free memory was 93.5MB in the beginning and 106.4MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:18:30,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.37ms. Allocated memory is still 130.0MB. Free memory was 106.4MB in the beginning and 104.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:18:30,106 INFO L158 Benchmark]: Boogie Preprocessor took 46.34ms. Allocated memory is still 130.0MB. Free memory was 104.7MB in the beginning and 103.8MB in the end (delta: 950.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:18:30,110 INFO L158 Benchmark]: RCFGBuilder took 329.88ms. Allocated memory is still 130.0MB. Free memory was 103.8MB in the beginning and 94.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:18:30,111 INFO L158 Benchmark]: TraceAbstraction took 640.29ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 67.0MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 12:18:30,114 INFO L158 Benchmark]: Witness Printer took 5.27ms. Allocated memory is still 130.0MB. Free memory was 67.0MB in the beginning and 66.6MB in the end (delta: 374.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:18:30,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.44ms. Allocated memory is still 130.0MB. Free memory was 93.5MB in the beginning and 106.4MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.37ms. Allocated memory is still 130.0MB. Free memory was 106.4MB in the beginning and 104.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.34ms. Allocated memory is still 130.0MB. Free memory was 104.7MB in the beginning and 103.8MB in the end (delta: 950.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.88ms. Allocated memory is still 130.0MB. Free memory was 103.8MB in the beginning and 94.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 640.29ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 67.0MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.27ms. Allocated memory is still 130.0MB. Free memory was 67.0MB in the beginning and 66.6MB in the end (delta: 374.9kB). 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: 51]: 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 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=53] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=53, x=53] [L42] RET, EXPR f(IN) VAL [f(IN)=54, IN=53] [L42] CALL, EXPR fp(IN) VAL [\old(x)=53] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=53, x=53] [L42] RET, EXPR fp(IN) VAL [f(IN)=54, fp(IN)=57, IN=53] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=55] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=55, x=55] [L44] RET, EXPR f(x) VAL [f(x)=56, IN=53, x=55] [L44] CALL, EXPR fp(x) VAL [\old(x)=55] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=55, x=55] [L44] RET, EXPR fp(x) VAL [f(x)=56, fp(x)=58, IN=53, x=55] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=53] [L51] reach_error() VAL [IN=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, 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, 24 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, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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 12:18:30,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 ea6a8c5e704811f28f8e849441da11858e0e82f813a23a41c3470eda1c16b043 --- 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 12:18:32,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:18:32,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:18:32,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:18:32,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:18:32,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:18:32,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:18:32,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:18:32,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:18:32,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:18:32,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:18:32,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:18:32,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:18:32,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:18:32,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:18:32,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:18:32,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:18:32,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:18:32,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:18:32,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:18:32,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:18:32,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:18:32,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:18:32,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:18:32,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:18:32,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:18:32,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:18:32,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:18:32,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:18:32,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:18:32,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:18:32,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:18:32,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:18:32,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:18:32,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:18:32,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:18:32,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:18:32,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:18:32,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:18:32,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:18:32,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:18:32,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:18:32,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:18:32,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:18:32,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:18:32,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:18:32,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:18:32,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:18:32,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:18:32,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:18:32,624 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:18:32,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:18:32,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:18:32,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:18:32,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:18:32,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:18:32,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:18:32,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:18:32,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:18:32,626 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:18:32,627 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:18:32,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:18:32,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:18:32,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:18:32,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:18:32,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:18:32,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:18:32,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:18:32,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:32,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:18:32,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:18:32,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:18:32,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:18:32,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:18:32,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:18:32,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:18:32,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:18:32,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:18:32,630 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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea6a8c5e704811f28f8e849441da11858e0e82f813a23a41c3470eda1c16b043 [2022-11-16 12:18:33,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:18:33,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:18:33,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:18:33,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:18:33,086 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:18:33,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/floats-cdfpl/newton_2_2.i [2022-11-16 12:18:33,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/1634098c3/c448ff8cf48b4937ad74229d29c52539/FLAG11d497b36 [2022-11-16 12:18:33,763 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:18:33,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/sv-benchmarks/c/floats-cdfpl/newton_2_2.i [2022-11-16 12:18:33,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/1634098c3/c448ff8cf48b4937ad74229d29c52539/FLAG11d497b36 [2022-11-16 12:18:34,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/data/1634098c3/c448ff8cf48b4937ad74229d29c52539 [2022-11-16 12:18:34,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:18:34,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:18:34,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:34,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:18:34,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:18:34,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1c0170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34, skipping insertion in model container [2022-11-16 12:18:34,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:18:34,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:18:34,333 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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/sv-benchmarks/c/floats-cdfpl/newton_2_2.i[1743,1756] [2022-11-16 12:18:34,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:34,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:18:34,417 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_5b33393c-75f6-4c85-9b3c-8851898c9a7a/sv-benchmarks/c/floats-cdfpl/newton_2_2.i[1743,1756] [2022-11-16 12:18:34,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:34,431 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:18:34,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34 WrapperNode [2022-11-16 12:18:34,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:34,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:34,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:18:34,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:18:34,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,466 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-11-16 12:18:34,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:34,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:18:34,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:18:34,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:18:34,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:18:34,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:18:34,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:18:34,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:18:34,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (1/1) ... [2022-11-16 12:18:34,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:34,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:34,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:18:34,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:18:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:18:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:18:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:18:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:18:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 12:18:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 12:18:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:18:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:18:34,702 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:18:34,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:18:43,383 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:18:43,388 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:18:43,388 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:18:43,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:43 BoogieIcfgContainer [2022-11-16 12:18:43,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:18:43,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:18:43,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:18:43,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:18:43,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:34" (1/3) ... [2022-11-16 12:18:43,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a258dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:43, skipping insertion in model container [2022-11-16 12:18:43,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:34" (2/3) ... [2022-11-16 12:18:43,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a258dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:43, skipping insertion in model container [2022-11-16 12:18:43,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:43" (3/3) ... [2022-11-16 12:18:43,397 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_2.i [2022-11-16 12:18:43,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:18:43,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:18:43,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:18:43,483 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;@19605c09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:18:43,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:18:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:18:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:18:43,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:43,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:43,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-11-16 12:18:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:43,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263916417] [2022-11-16 12:18:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:43,533 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 12:18:43,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:43,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 12:18:43,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 12:18:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:18:46,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:18:46,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:46,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:46,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263916417] [2022-11-16 12:18:46,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263916417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:46,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:46,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:18:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545322188] [2022-11-16 12:18:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:46,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:18:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:18:46,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:18:46,407 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:18:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:46,432 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-16 12:18:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:18:46,435 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-11-16 12:18:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:46,442 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:18:46,443 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:18:46,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 12:18:46,460 INFO L413 NwaCegarLoop]: 24 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, 24 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 12:18:46,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:18:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:18:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:18:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:18:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-16 12:18:46,508 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-11-16 12:18:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:46,509 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-16 12:18:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:18:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-16 12:18:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:18:46,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:46,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:46,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 12:18:46,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 12:18:46,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-11-16 12:18:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:46,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590174017] [2022-11-16 12:18:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:46,733 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 12:18:46,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:46,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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 12:18:46,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b33393c-75f6-4c85-9b3c-8851898c9a7a/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