./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF --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 f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:52:26,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:52:26,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:52:26,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:52:26,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:52:26,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:52:26,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:52:26,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:52:26,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:52:26,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:52:26,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:52:26,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:52:26,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:52:26,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:52:26,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:52:26,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:52:26,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:52:26,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:52:26,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:52:26,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:52:26,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:52:26,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:52:26,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:52:26,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:52:26,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:52:26,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:52:26,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:52:26,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:52:26,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:52:26,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:52:26,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:52:26,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:52:26,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:52:26,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:52:26,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:52:26,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:52:26,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:52:26,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:52:26,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:52:26,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:52:26,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:52:26,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:52:26,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:52:26,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:52:26,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:52:26,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:52:26,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:52:26,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:52:26,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:52:26,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:52:26,656 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:52:26,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:52:26,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:52:26,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:52:26,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:52:26,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:52:26,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:52:26,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:52:26,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:52:26,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:52:26,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:52:26,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:52:26,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:52:26,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:52:26,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:52:26,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:52:26,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:26,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:52:26,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:52:26,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:52:26,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:52:26,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:52:26,666 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:52:26,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:52:26,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:52:26,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:52:26,667 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_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 [2021-11-20 05:52:27,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:52:27,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:52:27,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:52:27,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:52:27,057 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:52:27,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-20 05:52:27,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/c009885de/e686e8a40bfe429692faa15d140c43a2/FLAGa55a5f631 [2021-11-20 05:52:27,739 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:52:27,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-20 05:52:27,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/c009885de/e686e8a40bfe429692faa15d140c43a2/FLAGa55a5f631 [2021-11-20 05:52:28,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/c009885de/e686e8a40bfe429692faa15d140c43a2 [2021-11-20 05:52:28,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:52:28,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:52:28,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:28,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:52:28,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:52:28,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d598863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28, skipping insertion in model container [2021-11-20 05:52:28,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:52:28,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:28,384 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-20 05:52:28,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:28,399 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:52:28,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-20 05:52:28,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:28,445 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:52:28,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28 WrapperNode [2021-11-20 05:52:28,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:28,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:28,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:52:28,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:52:28,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,493 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 98 [2021-11-20 05:52:28,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:28,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:52:28,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:52:28,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:52:28,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:52:28,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:52:28,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:52:28,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:52:28,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (1/1) ... [2021-11-20 05:52:28,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:28,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:52:28,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:52:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:52:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:52:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:52:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 05:52:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:52:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 05:52:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:52:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:52:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:52:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:52:28,756 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:52:28,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:52:29,025 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:52:29,032 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:52:29,032 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:52:29,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:29 BoogieIcfgContainer [2021-11-20 05:52:29,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:52:29,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:52:29,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:52:29,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:52:29,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:28" (1/3) ... [2021-11-20 05:52:29,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c83d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:29, skipping insertion in model container [2021-11-20 05:52:29,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:28" (2/3) ... [2021-11-20 05:52:29,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c83d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:29, skipping insertion in model container [2021-11-20 05:52:29,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:29" (3/3) ... [2021-11-20 05:52:29,045 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-11-20 05:52:29,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:52:29,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:52:29,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:52:29,119 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:52:29,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:52:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:52:29,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:29,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:29,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:29,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -938930996, now seen corresponding path program 1 times [2021-11-20 05:52:29,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:29,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195182975] [2021-11-20 05:52:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:29,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:29,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195182975] [2021-11-20 05:52:29,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195182975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:29,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:29,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:52:29,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798837962] [2021-11-20 05:52:29,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:29,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:29,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:29,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:29,574 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:29,669 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2021-11-20 05:52:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:29,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 05:52:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:29,684 INFO L225 Difference]: With dead ends: 49 [2021-11-20 05:52:29,684 INFO L226 Difference]: Without dead ends: 33 [2021-11-20 05:52:29,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:29,695 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:29,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-20 05:52:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2021-11-20 05:52:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-20 05:52:29,776 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2021-11-20 05:52:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:29,777 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-20 05:52:29,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-20 05:52:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:52:29,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:29,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:29,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:52:29,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1250925041, now seen corresponding path program 1 times [2021-11-20 05:52:29,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:29,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093547735] [2021-11-20 05:52:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:29,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:29,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:29,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093547735] [2021-11-20 05:52:29,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093547735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:29,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:29,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:52:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348248094] [2021-11-20 05:52:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:29,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:29,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:29,907 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:29,981 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2021-11-20 05:52:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:29,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:52:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:29,984 INFO L225 Difference]: With dead ends: 44 [2021-11-20 05:52:29,984 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 05:52:29,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:29,987 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:29,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 71 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 05:52:29,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 20. [2021-11-20 05:52:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-11-20 05:52:29,996 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 15 [2021-11-20 05:52:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:29,997 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-11-20 05:52:29,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-11-20 05:52:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:52:29,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:29,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:29,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:52:30,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1796523982, now seen corresponding path program 1 times [2021-11-20 05:52:30,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:30,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867205993] [2021-11-20 05:52:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:30,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:30,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867205993] [2021-11-20 05:52:30,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867205993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:30,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:30,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:52:30,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332485716] [2021-11-20 05:52:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:30,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:30,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:30,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:30,104 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:30,197 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-11-20 05:52:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:30,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:52:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:30,206 INFO L225 Difference]: With dead ends: 41 [2021-11-20 05:52:30,206 INFO L226 Difference]: Without dead ends: 35 [2021-11-20 05:52:30,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:30,216 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:30,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 79 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-20 05:52:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2021-11-20 05:52:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-20 05:52:30,227 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 15 [2021-11-20 05:52:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:30,228 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-20 05:52:30,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-20 05:52:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:52:30,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:30,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:30,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:52:30,230 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1813534643, now seen corresponding path program 1 times [2021-11-20 05:52:30,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:30,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230773623] [2021-11-20 05:52:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:30,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:52:30,253 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:52:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:52:30,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:52:30,324 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:52:30,325 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:52:30,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:52:30,342 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-20 05:52:30,347 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:52:30,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:52:30 BoogieIcfgContainer [2021-11-20 05:52:30,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:52:30,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:52:30,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:52:30,411 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:52:30,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:29" (3/4) ... [2021-11-20 05:52:30,415 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:52:30,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:52:30,416 INFO L158 Benchmark]: Toolchain (without parser) took 2342.81ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 57.6MB in the beginning and 74.3MB in the end (delta: -16.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-20 05:52:30,416 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:52:30,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.54ms. Allocated memory is still 96.5MB. Free memory was 57.4MB in the beginning and 70.7MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:52:30,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.85ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 69.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:52:30,418 INFO L158 Benchmark]: Boogie Preprocessor took 54.06ms. Allocated memory is still 96.5MB. Free memory was 69.0MB in the beginning and 67.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:52:30,419 INFO L158 Benchmark]: RCFGBuilder took 485.66ms. Allocated memory is still 96.5MB. Free memory was 67.6MB in the beginning and 56.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 05:52:30,420 INFO L158 Benchmark]: TraceAbstraction took 1372.82ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 56.1MB in the beginning and 75.1MB in the end (delta: -18.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-20 05:52:30,420 INFO L158 Benchmark]: Witness Printer took 4.82ms. Allocated memory is still 119.5MB. Free memory was 75.1MB in the beginning and 74.3MB in the end (delta: 800.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:52:30,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.54ms. Allocated memory is still 96.5MB. Free memory was 57.4MB in the beginning and 70.7MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.85ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 69.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.06ms. Allocated memory is still 96.5MB. Free memory was 69.0MB in the beginning and 67.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 485.66ms. Allocated memory is still 96.5MB. Free memory was 67.6MB in the beginning and 56.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1372.82ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 56.1MB in the beginning and 75.1MB in the end (delta: -18.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 4.82ms. Allocated memory is still 119.5MB. Free memory was 75.1MB in the beginning and 74.3MB in the end (delta: 800.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 96]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 83, overapproximation of to_real at line 46. Possible FailurePath: [L1] int __return_main; [L17] double __return_104; VAL [__return_104=0, __return_main=0] [L20] double main__a; [L21] double main__r; [L22] main__a = __VERIFIER_nondet_double() [L23] int main____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L24] COND TRUE main__a >= 20.0 VAL [__return_104=0, __return_main=0] [L26] COND TRUE main__a <= 30.0 [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_104=0, __return_main=0, main____CPAchecker_TMP_0=1] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] double __tmp_1; [L34] __tmp_1 = main__a [L35] double inv__A; [L36] inv__A = __tmp_1 [L37] double inv__xi; [L38] double inv__xsi; [L39] double inv__temp; [L40] signed int inv__cond; [L41] signed int inv__exp; [L42] union double_int inv__A_u; [L43] union double_int inv__xi_u; [L44] inv__A_u.d = inv__A [L45] EXPR inv__A_u.i [L45] inv__exp = ((signed int)(((inv__A_u.i) & 2146435072) >> 20)) - 1023 [L46] inv__xi_u.d = 1 [L47] inv__xi_u.i = (1023 - inv__exp) << 20 [L48] EXPR inv__xi_u.d [L48] inv__xi = inv__xi_u.d [L49] inv__cond = 1 VAL [__return_104=0, __return_main=0, __tmp_1=2145386497, inv__A=2145386497, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386501, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386497] [L51] COND TRUE !(inv__cond == 0) [L53] inv__xsi = (2 * inv__xi) - ((inv__A * inv__xi) * inv__xi) [L54] inv__temp = inv__xsi - inv__xi [L55] int inv____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0, __tmp_1=2145386497, inv__A=2145386497, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386501, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386497] [L56] COND FALSE !(inv__temp > 1.0E-10) VAL [__return_104=0, __return_main=0, __tmp_1=2145386497, inv__A=2145386497, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386501, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386497] [L67] COND FALSE !(inv__temp < -1.0E-10) [L73] inv____CPAchecker_TMP_0 = 0 VAL [__return_104=0, __return_main=0, __tmp_1=2145386497, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386501, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386497] [L61] inv__cond = inv____CPAchecker_TMP_0 [L62] inv__xi = inv__xsi VAL [__return_104=0, __return_main=0, __tmp_1=2145386497, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main__a=2145386497] [L51] COND FALSE !(!(inv__cond == 0)) [L80] __return_104 = inv__xi [L81] main__r = __return_104 [L82] int main____CPAchecker_TMP_1; VAL [__return_104=2145386499, __return_main=0, __tmp_1=2145386497, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main__a=2145386497, main__r=2145386499] [L83] COND FALSE !(main__r >= 0) VAL [__return_104=2145386499, __return_main=0, __tmp_1=2145386497, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main__a=2145386497, main__r=2145386499] [L108] main____CPAchecker_TMP_1 = 0 VAL [__return_104=2145386499, __return_main=0, __tmp_1=2145386497, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386497, main__r=2145386499] [L90] int __tmp_2; [L91] __tmp_2 = main____CPAchecker_TMP_1 [L92] int __VERIFIER_assert__cond; [L93] __VERIFIER_assert__cond = __tmp_2 VAL [__return_104=2145386499, __return_main=0, __tmp_1=2145386497, __tmp_2=0, __VERIFIER_assert__cond=0, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386497, main__r=2145386499] [L94] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_104=2145386499, __return_main=0, __tmp_1=2145386497, __tmp_2=0, __VERIFIER_assert__cond=0, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386497, main__r=2145386499] [L96] reach_error() VAL [__return_104=2145386499, __return_main=0, __tmp_1=2145386497, __tmp_2=0, __VERIFIER_assert__cond=0, inv____CPAchecker_TMP_0=0, inv__A=2145386497, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, inv__xsi=2145386499, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386497, main__r=2145386499] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 220 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 71 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:52:30,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF --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 f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:52:33,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:52:33,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:52:33,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:52:33,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:52:33,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:52:33,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:52:33,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:52:33,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:52:33,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:52:33,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:52:33,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:52:33,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:52:33,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:52:33,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:52:33,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:52:33,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:52:33,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:52:33,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:52:33,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:52:33,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:52:33,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:52:33,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:52:33,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:52:33,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:52:33,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:52:33,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:52:33,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:52:33,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:52:33,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:52:33,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:52:33,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:52:33,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:52:33,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:52:33,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:52:33,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:52:33,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:52:33,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:52:33,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:52:33,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:52:33,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:52:33,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 05:52:33,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:52:33,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:52:33,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:52:33,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:52:33,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:52:33,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:52:33,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:52:33,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:52:33,586 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:52:33,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:52:33,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:52:33,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:52:33,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:52:33,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:52:33,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:52:33,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:52:33,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:52:33,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:52:33,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:52:33,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:52:33,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:52:33,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:52:33,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:52:33,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:52:33,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:52:33,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:52:33,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:33,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:52:33,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:52:33,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:52:33,594 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:52:33,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:52:33,595 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:52:33,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:52:33,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:52:33,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:52:33,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:52:33,596 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_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 [2021-11-20 05:52:34,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:52:34,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:52:34,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:52:34,107 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:52:34,108 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:52:34,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-20 05:52:34,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/cc7181812/cb05b4e290d841508b50ab60c310d55f/FLAGee2e7f872 [2021-11-20 05:52:34,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:52:34,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-20 05:52:34,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/cc7181812/cb05b4e290d841508b50ab60c310d55f/FLAGee2e7f872 [2021-11-20 05:52:35,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/data/cc7181812/cb05b4e290d841508b50ab60c310d55f [2021-11-20 05:52:35,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:52:35,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:52:35,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:35,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:52:35,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:52:35,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d929549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35, skipping insertion in model container [2021-11-20 05:52:35,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:52:35,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:35,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-20 05:52:35,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:35,536 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:52:35,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-20 05:52:35,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:35,609 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:52:35,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35 WrapperNode [2021-11-20 05:52:35,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:35,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:35,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:52:35,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:52:35,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,699 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 99 [2021-11-20 05:52:35,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:35,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:52:35,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:52:35,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:52:35,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:52:35,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:52:35,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:52:35,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:52:35,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (1/1) ... [2021-11-20 05:52:35,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:35,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:35,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:52:35,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:52:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:52:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-20 05:52:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-20 05:52:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:52:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:52:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:52:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:52:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:52:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:52:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:52:36,001 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:52:36,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:52:38,486 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:52:38,493 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:52:38,494 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:52:38,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:38 BoogieIcfgContainer [2021-11-20 05:52:38,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:52:38,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:52:38,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:52:38,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:52:38,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:35" (1/3) ... [2021-11-20 05:52:38,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe09d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:38, skipping insertion in model container [2021-11-20 05:52:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:35" (2/3) ... [2021-11-20 05:52:38,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe09d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:38, skipping insertion in model container [2021-11-20 05:52:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:38" (3/3) ... [2021-11-20 05:52:38,506 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-11-20 05:52:38,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:52:38,513 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:52:38,570 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:52:38,579 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:52:38,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:52:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:52:38,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:38,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:38,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash -938930996, now seen corresponding path program 1 times [2021-11-20 05:52:38,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:38,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787376736] [2021-11-20 05:52:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:38,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:38,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:38,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:52:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:38,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:52:38,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:38,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:39,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:39,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787376736] [2021-11-20 05:52:39,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787376736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:39,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:39,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:52:39,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101106663] [2021-11-20 05:52:39,059 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:39,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:39,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:39,104 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:41,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:41,519 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2021-11-20 05:52:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 05:52:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:41,530 INFO L225 Difference]: With dead ends: 32 [2021-11-20 05:52:41,530 INFO L226 Difference]: Without dead ends: 19 [2021-11-20 05:52:41,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:41,539 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:41,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 05:52:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-20 05:52:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-20 05:52:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-20 05:52:41,578 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2021-11-20 05:52:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:41,579 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-20 05:52:41,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-20 05:52:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:52:41,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:41,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:41,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:41,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:41,785 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1250925041, now seen corresponding path program 1 times [2021-11-20 05:52:41,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997774668] [2021-11-20 05:52:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:41,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:41,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:41,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:41,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:52:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:42,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:42,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:42,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:42,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:42,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997774668] [2021-11-20 05:52:42,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997774668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:42,990 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:42,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:52:42,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825196912] [2021-11-20 05:52:42,990 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:42,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:42,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:42,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:42,994 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:45,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:52:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:45,485 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-11-20 05:52:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:45,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:52:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:45,487 INFO L225 Difference]: With dead ends: 28 [2021-11-20 05:52:45,487 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 05:52:45,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:45,490 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:45,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 79 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 05:52:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 05:52:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-11-20 05:52:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-11-20 05:52:45,495 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 15 [2021-11-20 05:52:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:45,496 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-11-20 05:52:45,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-11-20 05:52:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:52:45,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:45,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:45,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:45,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:45,699 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1796523982, now seen corresponding path program 1 times [2021-11-20 05:52:45,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:45,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074209981] [2021-11-20 05:52:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:45,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:45,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:45,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:45,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:52:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:46,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:52:46,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:46,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:46,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074209981] [2021-11-20 05:52:46,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074209981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:46,779 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:46,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:52:46,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095221237] [2021-11-20 05:52:46,779 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:46,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:46,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:46,782 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:46,902 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2021-11-20 05:52:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:46,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:52:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:46,905 INFO L225 Difference]: With dead ends: 24 [2021-11-20 05:52:46,905 INFO L226 Difference]: Without dead ends: 20 [2021-11-20 05:52:46,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:46,907 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:46,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-20 05:52:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-20 05:52:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-20 05:52:46,915 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 15 [2021-11-20 05:52:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:46,916 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-20 05:52:46,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-20 05:52:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:52:46,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:46,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:46,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:47,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:47,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1813534643, now seen corresponding path program 1 times [2021-11-20 05:52:47,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325203129] [2021-11-20 05:52:47,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:47,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:47,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:47,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:47,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6efaa458-396a-47e2-84f6-d64d65e417d6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:52:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:48,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:52:48,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:48,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 108 [2021-11-20 05:53:55,039 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (let ((.cse1 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (and (= |c_ULTIMATE.start_main_~inv__temp~0#1| (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~inv__xsi~0#1| .cse0)) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse0) .cse0)) |c_ULTIMATE.start_main_~inv__xsi~0#1|) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-20 05:56:06,101 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (let ((.cse1 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (and (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse0) .cse0)) |c_ULTIMATE.start_main_~inv__xsi~0#1|) (not (fp.lt (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~inv__xsi~0#1| .cse0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))))) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-20 05:57:26,815 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))))) (= |c_ULTIMATE.start_main_~inv__xi~0#1| .cse0) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-20 05:58:47,715 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (= |c_ULTIMATE.start_main_~main__r~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))))) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-20 06:00:10,831 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse1) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (not (fp.lt (fp.sub roundNearestTiesToEven .cse0 .cse1) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0))))) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 30.0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2021-11-20 06:00:12,915 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse1) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (not (fp.lt (fp.sub roundNearestTiesToEven .cse0 .cse1) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0))))) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 30.0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2021-11-20 06:04:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-20 06:04:16,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:04:27,738 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~inv__A~0#1| |c_ULTIMATE.start_main_~inv__xi~0#1|) |c_ULTIMATE.start_main_~inv__xi~0#1|)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from false [2021-11-20 06:04:29,903 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~inv__A~0#1| |c_ULTIMATE.start_main_~inv__xi~0#1|) |c_ULTIMATE.start_main_~inv__xi~0#1|)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from true [2021-11-20 06:04:29,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 748 treesize of output 706 [2021-11-20 06:05:11,608 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_5| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_5|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) is different from true [2021-11-20 06:05:36,058 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_5| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_5|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) (not (fp.leq |c_ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)))) is different from true [2021-11-20 06:06:58,592 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__a~0#1| (_ FloatingPoint 11 53))) (or (not (fp.geq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0))) (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_5| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_5|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) (not (fp.leq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0))))) is different from false [2021-11-20 06:07:00,764 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__a~0#1| (_ FloatingPoint 11 53))) (or (not (fp.geq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0))) (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_5| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) (bvshl (bvadd (_ bv1023 32) (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_5|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) (not (fp.leq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0))))) is different from true