./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 --- 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-2329fc7 [2022-12-14 05:37:27,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:37:27,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:37:27,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:37:27,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:37:27,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:37:27,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:37:27,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:37:27,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:37:27,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:37:27,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:37:27,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:37:27,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:37:27,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:37:27,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:37:27,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:37:27,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:37:27,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:37:27,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:37:27,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:37:27,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:37:27,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:37:27,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:37:27,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:37:27,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:37:27,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:37:27,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:37:27,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:37:27,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:37:27,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:37:27,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:37:27,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:37:27,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:37:27,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:37:27,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:37:27,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:37:27,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:37:27,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:37:27,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:37:27,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:37:27,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:37:27,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:37:27,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:37:27,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:37:27,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:37:27,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:37:27,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:37:27,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:37:27,671 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:37:27,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:37:27,672 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:37:27,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:37:27,672 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:37:27,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:37:27,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:37:27,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:37:27,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:37:27,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:37:27,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:37:27,673 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:37:27,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:37:27,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:37:27,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:37:27,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:37:27,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:37:27,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:37:27,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:37:27,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:37:27,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:37:27,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:37:27,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:37:27,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:37:27,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:37:27,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:37:27,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:37:27,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:37:27,677 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:37:27,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:37:27,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:37:27,678 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:37:27,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:37:27,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:37:27,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:37:27,679 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_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 [2022-12-14 05:37:27,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:37:27,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:37:27,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:37:27,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:37:27,871 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:37:27,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2022-12-14 05:37:30,354 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:37:30,505 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:37:30,506 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2022-12-14 05:37:30,510 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data/91a5f7d46/30f52177ad91468ba7b509c92b44be8c/FLAG90362819c [2022-12-14 05:37:30,927 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data/91a5f7d46/30f52177ad91468ba7b509c92b44be8c [2022-12-14 05:37:30,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:37:30,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:37:30,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:37:30,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:37:30,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:37:30,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:37:30" (1/1) ... [2022-12-14 05:37:30,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adc779a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:30, skipping insertion in model container [2022-12-14 05:37:30,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:37:30" (1/1) ... [2022-12-14 05:37:30,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:37:30,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:37:31,060 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_d49f662e-bf90-4304-ac05-fda1f074f304/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1764,1777] [2022-12-14 05:37:31,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:37:31,071 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:37:31,084 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_d49f662e-bf90-4304-ac05-fda1f074f304/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1764,1777] [2022-12-14 05:37:31,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:37:31,095 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:37:31,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31 WrapperNode [2022-12-14 05:37:31,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:37:31,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:37:31,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:37:31,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:37:31,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,120 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-12-14 05:37:31,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:37:31,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:37:31,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:37:31,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:37:31,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,135 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:37:31,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:37:31,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:37:31,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:37:31,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (1/1) ... [2022-12-14 05:37:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:37:31,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:31,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:37:31,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:37:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:37:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 05:37:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 05:37:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 05:37:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 05:37:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:37:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:37:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:37:31,265 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:37:31,267 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:37:31,353 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:37:31,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:37:31,386 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:37:31,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:31 BoogieIcfgContainer [2022-12-14 05:37:31,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:37:31,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:37:31,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:37:31,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:37:31,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:37:30" (1/3) ... [2022-12-14 05:37:31,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421c655f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:31, skipping insertion in model container [2022-12-14 05:37:31,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:31" (2/3) ... [2022-12-14 05:37:31,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421c655f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:31, skipping insertion in model container [2022-12-14 05:37:31,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:31" (3/3) ... [2022-12-14 05:37:31,400 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2022-12-14 05:37:31,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:37:31,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:37:31,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:37:31,473 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=FINITE_AUTOMATA, 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;@7e7945c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:37:31,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:37:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-12-14 05:37:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 05:37:31,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:31,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:37:31,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1831614501, now seen corresponding path program 1 times [2022-12-14 05:37:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:31,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969173930] [2022-12-14 05:37:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:37:31,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:37:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:37:31,623 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 05:37:31,625 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:37:31,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:37:31,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:37:31,631 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 05:37:31,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:37:31,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:37:31 BoogieIcfgContainer [2022-12-14 05:37:31,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:37:31,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:37:31,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:37:31,653 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:37:31,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:31" (3/4) ... [2022-12-14 05:37:31,656 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 05:37:31,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:37:31,657 INFO L158 Benchmark]: Toolchain (without parser) took 727.18ms. Allocated memory is still 134.2MB. Free memory was 100.9MB in the beginning and 60.6MB in the end (delta: 40.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-12-14 05:37:31,658 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:37:31,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.40ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 90.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:37:31,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.72ms. Allocated memory is still 134.2MB. Free memory was 90.2MB in the beginning and 88.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:37:31,659 INFO L158 Benchmark]: Boogie Preprocessor took 15.52ms. Allocated memory is still 134.2MB. Free memory was 88.5MB in the beginning and 87.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:37:31,659 INFO L158 Benchmark]: RCFGBuilder took 252.14ms. Allocated memory is still 134.2MB. Free memory was 87.5MB in the beginning and 76.6MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 05:37:31,660 INFO L158 Benchmark]: TraceAbstraction took 260.09ms. Allocated memory is still 134.2MB. Free memory was 76.0MB in the beginning and 61.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:37:31,660 INFO L158 Benchmark]: Witness Printer took 3.61ms. Allocated memory is still 134.2MB. Free memory was 61.0MB in the beginning and 60.6MB in the end (delta: 334.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:37:31,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.40ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 90.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.72ms. Allocated memory is still 134.2MB. Free memory was 90.2MB in the beginning and 88.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.52ms. Allocated memory is still 134.2MB. Free memory was 88.5MB in the beginning and 87.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.14ms. Allocated memory is still 134.2MB. Free memory was 87.5MB in the beginning and 76.6MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 260.09ms. Allocated memory is still 134.2MB. Free memory was 76.0MB in the beginning and 61.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.61ms. Allocated memory is still 134.2MB. Free memory was 61.0MB in the beginning and 60.6MB in the end (delta: 334.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L42] CALL, EXPR f(IN) 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; [L42] RET, EXPR f(IN) VAL [f(IN)=56, IN=55] [L42] CALL, EXPR fp(IN) 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; [L42] RET, EXPR fp(IN) VAL [f(IN)=56, fp(IN)=59, IN=55] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=60] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [f(x)=53, IN=55, x=60] [L44] CALL, EXPR fp(x) VAL [\old(x)=60] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [f(x)=53, fp(x)=61, IN=55, x=60] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) 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; [L46] RET, EXPR f(x) VAL [f(x)=58, IN=55, x=54] [L46] CALL, EXPR fp(x) 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; [L46] RET, EXPR fp(x) VAL [f(x)=58, fp(x)=57, IN=55, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=55] [L51] reach_error() VAL [IN=55] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 05:37:31,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 --- 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-2329fc7 [2022-12-14 05:37:33,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:37:33,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:37:33,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:37:33,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:37:33,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:37:33,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:37:33,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:37:33,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:37:33,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:37:33,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:37:33,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:37:33,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:37:33,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:37:33,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:37:33,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:37:33,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:37:33,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:37:33,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:37:33,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:37:33,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:37:33,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:37:33,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:37:33,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:37:33,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:37:33,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:37:33,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:37:33,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:37:33,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:37:33,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:37:33,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:37:33,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:37:33,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:37:33,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:37:33,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:37:33,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:37:33,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:37:33,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:37:33,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:37:33,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:37:33,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:37:33,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 05:37:33,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:37:33,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:37:33,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:37:33,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:37:33,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:37:33,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:37:33,360 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:37:33,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:37:33,360 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:37:33,361 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:37:33,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:37:33,361 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:37:33,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:37:33,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:37:33,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:37:33,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:37:33,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:37:33,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:37:33,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:37:33,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:37:33,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:37:33,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:37:33,364 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_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 [2022-12-14 05:37:33,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:37:33,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:37:33,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:37:33,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:37:33,609 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:37:33,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2022-12-14 05:37:36,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:37:36,323 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:37:36,323 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2022-12-14 05:37:36,329 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data/a723d1857/5fa61c7577bd44e9a00430ce5b1c455d/FLAGbbaa4d299 [2022-12-14 05:37:36,343 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/data/a723d1857/5fa61c7577bd44e9a00430ce5b1c455d [2022-12-14 05:37:36,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:37:36,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:37:36,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:37:36,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:37:36,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:37:36,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd782ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36, skipping insertion in model container [2022-12-14 05:37:36,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:37:36,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:37:36,545 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_d49f662e-bf90-4304-ac05-fda1f074f304/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1764,1777] [2022-12-14 05:37:36,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:37:36,562 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:37:36,580 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_d49f662e-bf90-4304-ac05-fda1f074f304/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1764,1777] [2022-12-14 05:37:36,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:37:36,595 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:37:36,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36 WrapperNode [2022-12-14 05:37:36,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:37:36,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:37:36,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:37:36,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:37:36,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,633 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-14 05:37:36,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:37:36,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:37:36,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:37:36,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:37:36,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,659 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:37:36,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:37:36,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:37:36,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:37:36,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (1/1) ... [2022-12-14 05:37:36,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:37:36,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:36,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:37:36,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:37:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:37:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 05:37:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 05:37:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 05:37:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 05:37:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 05:37:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:37:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:37:36,805 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:37:36,807 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:37:47,083 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:37:47,090 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:37:47,090 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:37:47,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:47 BoogieIcfgContainer [2022-12-14 05:37:47,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:37:47,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:37:47,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:37:47,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:37:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:37:36" (1/3) ... [2022-12-14 05:37:47,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a451b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:47, skipping insertion in model container [2022-12-14 05:37:47,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:36" (2/3) ... [2022-12-14 05:37:47,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a451b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:47, skipping insertion in model container [2022-12-14 05:37:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:47" (3/3) ... [2022-12-14 05:37:47,102 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2022-12-14 05:37:47,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:37:47,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:37:47,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:37:47,162 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=FINITE_AUTOMATA, 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;@67bcd641, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:37:47,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:37:47,166 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) [2022-12-14 05:37:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 05:37:47,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:47,172 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] [2022-12-14 05:37:47,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-12-14 05:37:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:37:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931340864] [2022-12-14 05:37:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:47,188 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 [2022-12-14 05:37:47,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:37:47,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:37:47,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:37:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:50,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 05:37:50,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:37:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 05:37:50,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:37:50,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:37:50,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931340864] [2022-12-14 05:37:50,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931340864] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:37:50,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:37:50,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:37:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262810424] [2022-12-14 05:37:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:37:50,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:37:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:37:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:37:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:37:50,336 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) [2022-12-14 05:37:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:37:50,357 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-12-14 05:37:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:37:50,358 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 [2022-12-14 05:37:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:37:50,363 INFO L225 Difference]: With dead ends: 49 [2022-12-14 05:37:50,363 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 05:37:50,365 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 [2022-12-14 05:37:50,367 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 [2022-12-14 05:37:50,368 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] [2022-12-14 05:37:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 05:37:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 05:37:50,390 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) [2022-12-14 05:37:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-14 05:37:50,392 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-12-14 05:37:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-14 05:37:50,392 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) [2022-12-14 05:37:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 05:37:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 05:37:50,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:50,393 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] [2022-12-14 05:37:50,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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)] Forceful destruction successful, exit code 0 [2022-12-14 05:37:50,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:37:50,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:50,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-12-14 05:37:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:37:50,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832903648] [2022-12-14 05:37:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:50,601 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 [2022-12-14 05:37:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:37:50,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:37:50,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d49f662e-bf90-4304-ac05-fda1f074f304/bin/utaipan-gh47qXpMRh/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