./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer --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 d9c72214a613f4a26e1c80cbce806993eed5c352 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer --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 d9c72214a613f4a26e1c80cbce806993eed5c352 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:04:00,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:04:00,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:04:00,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:04:00,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:04:00,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:04:00,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:04:00,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:04:00,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:04:00,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:04:00,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:04:00,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:04:00,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:04:00,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:04:00,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:04:00,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:04:00,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:04:00,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:04:00,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:04:00,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:04:00,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:04:00,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:04:00,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:04:00,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:04:00,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:04:00,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:04:00,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:04:00,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:04:00,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:04:00,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:04:00,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:04:00,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:04:00,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:04:00,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:04:00,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:04:00,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:04:00,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:04:00,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:04:00,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:04:00,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:04:00,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:04:00,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:04:00,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:04:00,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:04:00,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:04:00,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:04:00,298 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:04:00,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:04:00,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:04:00,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:04:00,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:04:00,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:04:00,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:04:00,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:04:00,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:04:00,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:04:00,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:04:00,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:04:00,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:04:00,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:04:00,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:04:00,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:04:00,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:04:00,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:04:00,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:04:00,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:04:00,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:04:00,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:04:00,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:04:00,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:04:00,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:04:00,308 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-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-11-29 19:04:00,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:04:00,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:04:00,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:04:00,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:04:00,674 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:04:00,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-11-29 19:04:00,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/b763223db/e306a90cb67a4b4286e0dbafb9994464/FLAG82266a728 [2020-11-29 19:04:01,339 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:04:01,340 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-11-29 19:04:01,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/b763223db/e306a90cb67a4b4286e0dbafb9994464/FLAG82266a728 [2020-11-29 19:04:01,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/b763223db/e306a90cb67a4b4286e0dbafb9994464 [2020-11-29 19:04:01,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:04:01,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:04:01,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:01,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:04:01,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:04:01,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:01" (1/1) ... [2020-11-29 19:04:01,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0326b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:01, skipping insertion in model container [2020-11-29 19:04:01,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:01" (1/1) ... [2020-11-29 19:04:01,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:04:01,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:04:02,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:02,041 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:04:02,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:02,112 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:04:02,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02 WrapperNode [2020-11-29 19:04:02,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:02,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:02,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:04:02,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:04:02,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:02,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:04:02,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:04:02,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:04:02,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... [2020-11-29 19:04:02,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:04:02,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:04:02,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:04:02,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:04:02,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:04:02,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:04:02,616 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 19:04:02,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:02 BoogieIcfgContainer [2020-11-29 19:04:02,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:04:02,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:04:02,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:04:02,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:04:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:04:01" (1/3) ... [2020-11-29 19:04:02,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc82063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:02, skipping insertion in model container [2020-11-29 19:04:02,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:02" (2/3) ... [2020-11-29 19:04:02,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc82063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:02, skipping insertion in model container [2020-11-29 19:04:02,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:02" (3/3) ... [2020-11-29 19:04:02,641 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-11-29 19:04:02,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:04:02,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:04:02,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:04:02,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:04:02,705 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:04:02,705 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:04:02,705 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:04:02,705 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:04:02,705 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:04:02,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:04:02,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:04:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 19:04:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:04:02,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:02,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:02,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:02,750 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-29 19:04:02,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:02,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234828446] [2020-11-29 19:04:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:02,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234828446] [2020-11-29 19:04:02,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:02,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:04:02,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445925900] [2020-11-29 19:04:02,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:04:02,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:03,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:04:03,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:04:03,007 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-29 19:04:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:03,031 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-29 19:04:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:04:03,033 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 19:04:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:03,046 INFO L225 Difference]: With dead ends: 25 [2020-11-29 19:04:03,046 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 19:04:03,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:04:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 19:04:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 19:04:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 19:04:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-29 19:04:03,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-29 19:04:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:03,106 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-29 19:04:03,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:04:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-29 19:04:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:04:03,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:03,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:03,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:04:03,109 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:03,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-29 19:04:03,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:03,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961931760] [2020-11-29 19:04:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:03,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:03,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:03,197 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:03,198 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:04:03,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:04:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:04:03 BoogieIcfgContainer [2020-11-29 19:04:03,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:04:03,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:04:03,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:04:03,229 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:04:03,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:02" (3/4) ... [2020-11-29 19:04:03,234 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:04:03,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:04:03,239 INFO L168 Benchmark]: Toolchain (without parser) took 1543.99 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 41.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,240 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:03,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.09 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 75.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 73.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,244 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 72.6 MB in the end (delta: 974.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:03,245 INFO L168 Benchmark]: RCFGBuilder took 434.83 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 61.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,247 INFO L168 Benchmark]: TraceAbstraction took 608.03 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 41.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,248 INFO L168 Benchmark]: Witness Printer took 6.54 ms. Allocated memory is still 98.6 MB. Free memory was 41.9 MB in the beginning and 41.6 MB in the end (delta: 316.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:03,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 420.09 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 75.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 73.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 72.6 MB in the end (delta: 974.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 434.83 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 61.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 608.03 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 41.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.54 ms. Allocated memory is still 98.6 MB. Free memory was 41.9 MB in the beginning and 41.6 MB in the end (delta: 316.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_5.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:04:06,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:04:06,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:04:06,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:04:06,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:04:06,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:04:06,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:04:06,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:04:06,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:04:06,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:04:06,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:04:06,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:04:06,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:04:06,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:04:06,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:04:06,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:04:06,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:04:06,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:04:06,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:04:06,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:04:06,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:04:06,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:04:06,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:04:06,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:04:06,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:04:06,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:04:06,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:04:06,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:04:06,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:04:06,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:04:06,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:04:06,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:04:06,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:04:06,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:04:06,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:04:06,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:04:06,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:04:06,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:04:06,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:04:06,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:04:06,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:04:06,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:04:06,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:04:06,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:04:06,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:04:06,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:04:06,823 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:04:06,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:04:06,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:04:06,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:04:06,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:04:06,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:04:06,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:04:06,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:04:06,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:04:06,827 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:04:06,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:04:06,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:04:06,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:04:06,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:04:06,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:04:06,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:04:06,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:04:06,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:04:06,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:04:06,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:04:06,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:04:06,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:04:06,831 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:04:06,831 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:04:06,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:04:06,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:04:06,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:04:06,832 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-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-11-29 19:04:07,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:04:07,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:04:07,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:04:07,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:04:07,347 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:04:07,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-11-29 19:04:07,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/08f832598/1bbc3efaeb7f4174961f91d720f99735/FLAG78099d9c3 [2020-11-29 19:04:08,264 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:04:08,265 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-11-29 19:04:08,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/08f832598/1bbc3efaeb7f4174961f91d720f99735/FLAG78099d9c3 [2020-11-29 19:04:08,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/data/08f832598/1bbc3efaeb7f4174961f91d720f99735 [2020-11-29 19:04:08,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:04:08,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:04:08,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:08,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:04:08,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:04:08,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63db9a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08, skipping insertion in model container [2020-11-29 19:04:08,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:04:08,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:04:08,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:08,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:04:08,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:08,893 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:04:08,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08 WrapperNode [2020-11-29 19:04:08,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:08,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:08,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:04:08,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:04:08,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:08,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:04:08,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:04:08,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:04:08,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:08,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:09,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:09,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:09,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... [2020-11-29 19:04:09,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:04:09,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:04:09,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:04:09,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:04:09,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:04:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:04:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:04:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:04:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:04:16,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:04:16,391 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 19:04:16,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:16 BoogieIcfgContainer [2020-11-29 19:04:16,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:04:16,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:04:16,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:04:16,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:04:16,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:04:08" (1/3) ... [2020-11-29 19:04:16,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667ff25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:16, skipping insertion in model container [2020-11-29 19:04:16,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:08" (2/3) ... [2020-11-29 19:04:16,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667ff25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:16, skipping insertion in model container [2020-11-29 19:04:16,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:16" (3/3) ... [2020-11-29 19:04:16,425 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-11-29 19:04:16,439 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:04:16,459 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:04:16,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:04:16,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:04:16,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:04:16,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:04:16,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:04:16,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:04:16,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:04:16,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:04:16,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:04:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 19:04:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:04:16,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:16,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:16,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:16,543 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-29 19:04:16,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:04:16,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583216362] [2020-11-29 19:04:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:04:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:18,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:04:18,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:18,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:04:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:18,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583216362] [2020-11-29 19:04:18,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:18,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:04:18,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104352782] [2020-11-29 19:04:18,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:04:18,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:04:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:04:18,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:04:18,217 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-29 19:04:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:18,236 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-29 19:04:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:04:18,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 19:04:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:18,248 INFO L225 Difference]: With dead ends: 25 [2020-11-29 19:04:18,249 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 19:04:18,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:04:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 19:04:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 19:04:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 19:04:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-29 19:04:18,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-29 19:04:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:18,293 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-29 19:04:18,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:04:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-29 19:04:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:04:18,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:18,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:18,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:04:18,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-29 19:04:18,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:04:18,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625730502] [2020-11-29 19:04:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:04:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:46,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,931 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:04:58,931 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:04:59,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:04:59,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:04:59 BoogieIcfgContainer [2020-11-29 19:04:59,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:04:59,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:04:59,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:04:59,159 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:04:59,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:16" (3/4) ... [2020-11-29 19:04:59,161 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:04:59,212 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_82b286f6-ab89-4764-9960-1b7ec5d5a224/bin/uautomizer/witness.graphml [2020-11-29 19:04:59,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:04:59,217 INFO L168 Benchmark]: Toolchain (without parser) took 50635.94 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 44.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,218 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:59,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.67 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 32.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.36 ms. Allocated memory is still 62.9 MB. Free memory was 32.0 MB in the beginning and 30.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,221 INFO L168 Benchmark]: Boogie Preprocessor took 70.19 ms. Allocated memory is still 62.9 MB. Free memory was 30.6 MB in the beginning and 29.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:59,223 INFO L168 Benchmark]: RCFGBuilder took 7360.68 ms. Allocated memory is still 62.9 MB. Free memory was 29.2 MB in the beginning and 35.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,225 INFO L168 Benchmark]: TraceAbstraction took 42740.99 ms. Allocated memory is still 62.9 MB. Free memory was 34.5 MB in the beginning and 27.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,226 INFO L168 Benchmark]: Witness Printer took 55.56 ms. Allocated memory is still 62.9 MB. Free memory was 27.7 MB in the beginning and 44.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.67 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 32.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.36 ms. Allocated memory is still 62.9 MB. Free memory was 32.0 MB in the beginning and 30.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.19 ms. Allocated memory is still 62.9 MB. Free memory was 30.6 MB in the beginning and 29.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7360.68 ms. Allocated memory is still 62.9 MB. Free memory was 29.2 MB in the beginning and 35.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 42740.99 ms. Allocated memory is still 62.9 MB. Free memory was 34.5 MB in the beginning and 27.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Witness Printer took 55.56 ms. Allocated memory is still 62.9 MB. Free memory was 27.7 MB in the beginning and 44.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_5.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 29.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...