./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN --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 c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- 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-6b4ec56 [2022-11-20 10:31:20,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:31:20,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:31:20,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:31:20,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:31:20,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:31:20,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:31:20,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:31:20,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:31:20,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:31:20,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:31:20,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:31:20,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:31:20,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:31:20,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:31:20,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:31:20,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:31:20,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:31:20,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:31:20,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:31:20,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:31:20,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:31:20,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:31:20,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:31:20,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:31:20,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:31:20,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:31:20,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:31:20,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:31:20,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:31:20,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:31:20,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:31:20,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:31:20,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:31:20,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:31:20,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:31:20,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:31:20,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:31:20,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:31:20,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:31:20,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:31:20,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:31:20,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:31:20,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:31:20,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:31:20,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:31:20,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:31:20,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:31:20,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:31:20,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:31:20,853 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:31:20,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:31:20,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:31:20,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:31:20,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:31:20,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:31:20,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:31:20,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:31:20,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:31:20,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:31:20,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:31:20,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:31:20,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:31:20,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:31:20,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:31:20,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:31:20,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:31:20,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:31:20,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:31:20,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:31:20,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:31:20,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:31:20,859 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:31:20,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:31:20,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:31:20,860 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2022-11-20 10:31:21,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:31:21,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:31:21,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:31:21,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:31:21,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:31:21,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-11-20 10:31:24,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:31:24,664 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:31:24,665 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-11-20 10:31:24,673 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data/b8d70b0ce/90f86949090d46e2be72fb32e413285e/FLAG41e8ca9e2 [2022-11-20 10:31:24,687 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data/b8d70b0ce/90f86949090d46e2be72fb32e413285e [2022-11-20 10:31:24,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:31:24,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:31:24,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:31:24,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:31:24,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:31:24,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0f8d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24, skipping insertion in model container [2022-11-20 10:31:24,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:31:24,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:31:24,882 WARN L237 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-11-20 10:31:24,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:24,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:31:24,913 WARN L237 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-11-20 10:31:24,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:24,927 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:31:24,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24 WrapperNode [2022-11-20 10:31:24,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:31:24,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:31:24,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:31:24,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:31:24,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,960 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-20 10:31:24,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:31:24,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:31:24,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:31:24,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:31:24,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:31:24,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:31:24,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:31:24,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:31:24,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (1/1) ... [2022-11-20 10:31:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:31:25,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:25,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:31:25,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:31:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:31:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 10:31:25,072 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 10:31:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 10:31:25,073 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 10:31:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:31:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:31:25,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:31:25,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:31:25,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:31:25,243 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:31:25,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:31:25,251 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:31:25,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:31:25 BoogieIcfgContainer [2022-11-20 10:31:25,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:31:25,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:31:25,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:31:25,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:31:25,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:31:24" (1/3) ... [2022-11-20 10:31:25,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593dc8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:31:25, skipping insertion in model container [2022-11-20 10:31:25,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:24" (2/3) ... [2022-11-20 10:31:25,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593dc8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:31:25, skipping insertion in model container [2022-11-20 10:31:25,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:31:25" (3/3) ... [2022-11-20 10:31:25,262 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2022-11-20 10:31:25,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:31:25,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:31:25,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:31:25,345 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;@12f3ffc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:31:25,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:31:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:31:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 10:31:25,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:25,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:25,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-11-20 10:31:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:25,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838771820] [2022-11-20 10:31:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:25,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:31:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:31:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:31:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:31:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:31:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:31:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:31:25,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:25,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838771820] [2022-11-20 10:31:25,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838771820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:25,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:25,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:31:25,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185608649] [2022-11-20 10:31:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:25,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:31:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:31:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:31:25,689 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:31:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:25,732 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-11-20 10:31:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:31:25,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-11-20 10:31:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:25,742 INFO L225 Difference]: With dead ends: 49 [2022-11-20 10:31:25,742 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 10:31:25,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:31:25,755 INFO L413 NwaCegarLoop]: 29 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, 29 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 [2022-11-20 10:31:25,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:31:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 10:31:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 10:31:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:31:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-20 10:31:25,801 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-11-20 10:31:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:25,802 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-20 10:31:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:31:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-20 10:31:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 10:31:25,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:25,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:25,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:31:25,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-11-20 10:31:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:25,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020815715] [2022-11-20 10:31:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:25,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:31:25,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:31:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:31:25,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:31:25,901 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:31:25,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:31:25,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:31:25,909 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 10:31:25,913 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:31:25,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:31:25 BoogieIcfgContainer [2022-11-20 10:31:25,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:31:25,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:31:25,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:31:25,944 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:31:25,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:31:25" (3/4) ... [2022-11-20 10:31:25,948 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:31:25,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:31:25,950 INFO L158 Benchmark]: Toolchain (without parser) took 1258.24ms. Allocated memory is still 211.8MB. Free memory was 178.7MB in the beginning and 124.9MB in the end (delta: 53.9MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-20 10:31:25,950 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:31:25,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.52ms. Allocated memory is still 211.8MB. Free memory was 178.0MB in the beginning and 167.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:31:25,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.98ms. Allocated memory is still 211.8MB. Free memory was 167.5MB in the beginning and 166.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:31:25,952 INFO L158 Benchmark]: Boogie Preprocessor took 21.96ms. Allocated memory is still 211.8MB. Free memory was 166.2MB in the beginning and 165.4MB in the end (delta: 781.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:31:25,953 INFO L158 Benchmark]: RCFGBuilder took 268.31ms. Allocated memory is still 211.8MB. Free memory was 165.4MB in the beginning and 154.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:31:25,954 INFO L158 Benchmark]: TraceAbstraction took 687.20ms. Allocated memory is still 211.8MB. Free memory was 154.2MB in the beginning and 124.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 10:31:25,954 INFO L158 Benchmark]: Witness Printer took 5.72ms. Allocated memory is still 211.8MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:31:25,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.52ms. Allocated memory is still 211.8MB. Free memory was 178.0MB in the beginning and 167.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.98ms. Allocated memory is still 211.8MB. Free memory was 167.5MB in the beginning and 166.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.96ms. Allocated memory is still 211.8MB. Free memory was 166.2MB in the beginning and 165.4MB in the end (delta: 781.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.31ms. Allocated memory is still 211.8MB. Free memory was 165.4MB in the beginning and 154.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 687.20ms. Allocated memory is still 211.8MB. Free memory was 154.2MB in the beginning and 124.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.72ms. Allocated memory is still 211.8MB. Free memory is still 124.9MB. 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 46. 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)=54] [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)=54, x=54] [L42] RET, EXPR f(IN) VAL [f(IN)=55, IN=54] [L42] CALL, EXPR fp(IN) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=54, x=54] [L42] RET, EXPR fp(IN) VAL [f(IN)=55, fp(IN)=59, IN=54] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=56] [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)=56, x=56] [L44] RET, EXPR f(x) VAL [f(x)=57, IN=54, x=56] [L44] CALL, EXPR fp(x) VAL [\old(x)=56] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=56, x=56] [L44] RET, EXPR fp(x) VAL [f(x)=57, fp(x)=60, IN=54, x=56] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=58] [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)=58, x=58] [L46] RET, EXPR f(x) VAL [f(x)=61, IN=54, x=58] [L46] CALL, EXPR fp(x) VAL [\old(x)=58] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=58, x=58] [L46] RET, EXPR fp(x) VAL [f(x)=61, fp(x)=53, IN=54, x=58] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=54] [L51] reach_error() VAL [IN=54] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 3, 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, 29 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, 29 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 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 [2022-11-20 10:31:25,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN --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 c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- 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-6b4ec56 [2022-11-20 10:31:28,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:31:28,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:31:28,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:31:28,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:31:28,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:31:28,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:31:28,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:31:28,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:31:28,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:31:28,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:31:28,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:31:28,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:31:28,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:31:28,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:31:28,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:31:28,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:31:28,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:31:28,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:31:28,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:31:28,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:31:28,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:31:28,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:31:28,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:31:28,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:31:28,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:31:28,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:31:28,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:31:28,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:31:28,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:31:28,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:31:28,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:31:28,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:31:28,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:31:28,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:31:28,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:31:28,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:31:28,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:31:28,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:31:28,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:31:28,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:31:28,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 10:31:28,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:31:28,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:31:28,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:31:28,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:31:28,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:31:28,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:31:28,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:31:28,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:31:28,793 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:31:28,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:31:28,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:31:28,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:31:28,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:31:28,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:31:28,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:31:28,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:31:28,796 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:31:28,796 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:31:28,796 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:31:28,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:31:28,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:31:28,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:31:28,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:31:28,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:31:28,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:31:28,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:31:28,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:31:28,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:31:28,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:31:28,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:31:28,799 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:31:28,799 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:31:28,799 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:31:28,799 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:31:28,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:31:28,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:31:28,800 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2022-11-20 10:31:29,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:31:29,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:31:29,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:31:29,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:31:29,268 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:31:29,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-11-20 10:31:32,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:31:32,869 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:31:32,870 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-11-20 10:31:32,877 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data/d8b8beb80/8352642777a84c4e8ad700da418b4c4b/FLAGdd13c5260 [2022-11-20 10:31:32,896 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/data/d8b8beb80/8352642777a84c4e8ad700da418b4c4b [2022-11-20 10:31:32,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:31:32,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:31:32,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:31:32,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:31:32,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:31:32,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:31:32" (1/1) ... [2022-11-20 10:31:32,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7544d353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:32, skipping insertion in model container [2022-11-20 10:31:32,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:31:32" (1/1) ... [2022-11-20 10:31:32,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:31:32,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:31:33,160 WARN L237 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-11-20 10:31:33,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:33,191 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:31:33,228 WARN L237 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_b0780bbb-7b70-47eb-ada2-5fe334e97055/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-11-20 10:31:33,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:33,247 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:31:33,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33 WrapperNode [2022-11-20 10:31:33,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:31:33,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:31:33,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:31:33,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:31:33,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,301 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-11-20 10:31:33,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:31:33,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:31:33,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:31:33,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:31:33,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:31:33,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:31:33,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:31:33,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:31:33,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (1/1) ... [2022-11-20 10:31:33,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:31:33,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:33,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:31:33,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:31:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:31:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 10:31:33,455 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 10:31:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:31:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 10:31:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 10:31:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:31:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:31:33,571 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:31:33,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:31:42,929 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:31:42,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:31:42,938 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:31:42,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:31:42 BoogieIcfgContainer [2022-11-20 10:31:42,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:31:42,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:31:42,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:31:42,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:31:42,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:31:32" (1/3) ... [2022-11-20 10:31:42,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d191740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:31:42, skipping insertion in model container [2022-11-20 10:31:42,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:33" (2/3) ... [2022-11-20 10:31:42,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d191740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:31:42, skipping insertion in model container [2022-11-20 10:31:42,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:31:42" (3/3) ... [2022-11-20 10:31:42,951 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2022-11-20 10:31:42,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:31:42,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:31:43,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:31:43,042 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;@4ed0321, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:31:43,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:31:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:31:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 10:31:43,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:43,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:43,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-11-20 10:31:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:31:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002252505] [2022-11-20 10:31:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:43,083 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 [2022-11-20 10:31:43,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:31:43,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:31:43,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:31:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:46,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 10:31:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:31:46,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:31:46,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:31:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002252505] [2022-11-20 10:31:46,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002252505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:46,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:46,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:31:46,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192460573] [2022-11-20 10:31:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:31:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:31:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:31:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:31:47,041 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:31:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:47,064 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-11-20 10:31:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:31:47,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-11-20 10:31:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:47,073 INFO L225 Difference]: With dead ends: 49 [2022-11-20 10:31:47,074 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 10:31:47,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:31:47,089 INFO L413 NwaCegarLoop]: 29 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, 29 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 [2022-11-20 10:31:47,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:31:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 10:31:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 10:31:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:31:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-20 10:31:47,128 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-11-20 10:31:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-20 10:31:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:31:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-20 10:31:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 10:31:47,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:47,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:47,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:31:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:31:47,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-11-20 10:31:47,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:31:47,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173197693] [2022-11-20 10:31:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:47,355 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 [2022-11-20 10:31:47,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:31:47,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:31:47,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0780bbb-7b70-47eb-ada2-5fe334e97055/bin/uautomizer-ug76WZFUDN/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