./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --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_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ................................................................................................................................................................................................................................... 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_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:16:41,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:16:41,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:16:41,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:16:41,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:16:41,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:16:41,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:16:41,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:16:41,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:16:41,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:16:41,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:16:41,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:16:41,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:16:41,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:16:41,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:16:41,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:16:41,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:16:41,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:16:41,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:16:41,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:16:41,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:16:41,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:16:41,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:16:41,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:16:41,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:16:41,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:16:41,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:16:41,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:16:41,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:16:41,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:16:41,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:16:41,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:16:41,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:16:41,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:16:41,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:16:41,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:16:41,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:16:41,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:16:41,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:16:41,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:16:41,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:16:41,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:16:41,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:16:41,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:16:41,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:16:41,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:16:41,508 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:16:41,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:16:41,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:16:41,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:16:41,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:16:41,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:16:41,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:16:41,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:16:41,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:16:41,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:16:41,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:16:41,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:16:41,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:16:41,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:16:41,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:16:41,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:16:41,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:16:41,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:16:41,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:16:41,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:16:41,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:16:41,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:16:41,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:16:41,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:16:41,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:16:41,515 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_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-11-29 21:16:41,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:16:41,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:16:41,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:16:41,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:16:41,851 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:16:41,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-29 21:16:41,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/3a8c5f86e/fbfbd2d7d319429594a3f4bfafd6d7c4/FLAG1b04d4c9e [2020-11-29 21:16:42,546 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:16:42,547 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-29 21:16:42,557 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/3a8c5f86e/fbfbd2d7d319429594a3f4bfafd6d7c4/FLAG1b04d4c9e [2020-11-29 21:16:42,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/3a8c5f86e/fbfbd2d7d319429594a3f4bfafd6d7c4 [2020-11-29 21:16:42,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:16:42,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:16:42,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:42,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:16:42,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:16:42,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:42" (1/1) ... [2020-11-29 21:16:42,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f05e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:42, skipping insertion in model container [2020-11-29 21:16:42,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:42" (1/1) ... [2020-11-29 21:16:42,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:16:42,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:16:43,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:43,216 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:16:43,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:43,255 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:16:43,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43 WrapperNode [2020-11-29 21:16:43,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:43,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:43,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:16:43,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:16:43,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:43,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:16:43,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:16:43,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:16:43,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... [2020-11-29 21:16:43,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:16:43,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:16:43,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:16:43,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:16:43,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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 21:16:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:16:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:16:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:16:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:16:43,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:16:43,845 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 21:16:43,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:43 BoogieIcfgContainer [2020-11-29 21:16:43,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:16:43,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:16:43,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:16:43,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:16:43,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:16:42" (1/3) ... [2020-11-29 21:16:43,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91b6ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:16:43, skipping insertion in model container [2020-11-29 21:16:43,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:43" (2/3) ... [2020-11-29 21:16:43,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91b6ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:16:43, skipping insertion in model container [2020-11-29 21:16:43,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:43" (3/3) ... [2020-11-29 21:16:43,856 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-11-29 21:16:43,866 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:16:43,869 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 21:16:43,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 21:16:43,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:16:43,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:16:43,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:16:43,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:16:43,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:16:43,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:16:43,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:16:43,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:16:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 21:16:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 21:16:43,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:16:43,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 21:16:43,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:16:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:43,940 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-29 21:16:43,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:43,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462132927] [2020-11-29 21:16:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:44,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:44,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:44,128 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:44,129 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:16:44,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:16:44,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:16:44 BoogieIcfgContainer [2020-11-29 21:16:44,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:16:44,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:16:44,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:16:44,159 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:16:44,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:43" (3/4) ... [2020-11-29 21:16:44,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:16:44,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:16:44,170 INFO L168 Benchmark]: Toolchain (without parser) took 1261.30 ms. Allocated memory is still 81.8 MB. Free memory was 50.9 MB in the beginning and 32.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:44,172 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:44,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.25 ms. Allocated memory is still 81.8 MB. Free memory was 50.7 MB in the beginning and 58.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:44,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.61 ms. Allocated memory is still 81.8 MB. Free memory was 58.4 MB in the beginning and 57.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:44,176 INFO L168 Benchmark]: Boogie Preprocessor took 19.08 ms. Allocated memory is still 81.8 MB. Free memory was 57.0 MB in the beginning and 55.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:44,177 INFO L168 Benchmark]: RCFGBuilder took 520.49 ms. Allocated memory is still 81.8 MB. Free memory was 55.8 MB in the beginning and 45.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:44,179 INFO L168 Benchmark]: TraceAbstraction took 307.54 ms. Allocated memory is still 81.8 MB. Free memory was 44.4 MB in the beginning and 33.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:44,179 INFO L168 Benchmark]: Witness Printer took 7.14 ms. Allocated memory is still 81.8 MB. Free memory was 33.2 MB in the beginning and 32.8 MB in the end (delta: 354.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:44,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.25 ms. Allocated memory is still 81.8 MB. Free memory was 50.7 MB in the beginning and 58.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.61 ms. Allocated memory is still 81.8 MB. Free memory was 58.4 MB in the beginning and 57.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.08 ms. Allocated memory is still 81.8 MB. Free memory was 57.0 MB in the beginning and 55.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 520.49 ms. Allocated memory is still 81.8 MB. Free memory was 55.8 MB in the beginning and 45.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 307.54 ms. Allocated memory is still 81.8 MB. Free memory was 44.4 MB in the beginning and 33.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.14 ms. Allocated memory is still 81.8 MB. Free memory was 33.2 MB in the beginning and 32.8 MB in the end (delta: 354.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L3] __assert_fail("0", "float-no-simp6.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:16:47,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:16:47,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:16:47,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:16:47,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:16:47,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:16:47,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:16:47,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:16:47,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:16:47,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:16:47,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:16:47,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:16:47,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:16:47,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:16:47,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:16:47,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:16:47,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:16:47,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:16:47,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:16:47,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:16:47,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:16:47,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:16:47,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:16:47,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:16:47,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:16:47,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:16:47,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:16:47,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:16:47,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:16:47,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:16:47,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:16:47,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:16:47,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:16:47,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:16:47,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:16:47,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:16:47,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:16:47,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:16:47,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:16:47,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:16:47,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:16:47,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 21:16:47,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:16:47,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:16:47,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:16:47,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:16:47,279 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:16:47,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:16:47,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:16:47,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:16:47,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:16:47,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:16:47,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:16:47,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:16:47,281 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 21:16:47,282 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 21:16:47,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:16:47,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:16:47,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:16:47,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:16:47,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:16:47,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:16:47,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:16:47,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:16:47,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:16:47,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:16:47,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:16:47,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:16:47,291 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 21:16:47,291 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 21:16:47,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:16:47,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:16:47,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 21:16:47,293 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_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-11-29 21:16:47,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:16:47,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:16:47,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:16:47,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:16:47,863 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:16:47,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-29 21:16:47,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/d0f48b5ca/f3167619e1fe47a6aa4f97edb5029029/FLAGf8100c9f1 [2020-11-29 21:16:48,510 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:16:48,511 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-29 21:16:48,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/d0f48b5ca/f3167619e1fe47a6aa4f97edb5029029/FLAGf8100c9f1 [2020-11-29 21:16:48,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/data/d0f48b5ca/f3167619e1fe47a6aa4f97edb5029029 [2020-11-29 21:16:48,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:16:48,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:16:48,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:48,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:16:48,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:16:48,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:48" (1/1) ... [2020-11-29 21:16:48,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5d6cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:48, skipping insertion in model container [2020-11-29 21:16:48,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:48" (1/1) ... [2020-11-29 21:16:48,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:16:48,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:16:49,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:49,187 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:16:49,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:49,231 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:16:49,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49 WrapperNode [2020-11-29 21:16:49,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:49,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:49,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:16:49,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:16:49,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:49,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:16:49,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:16:49,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:16:49,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... [2020-11-29 21:16:49,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:16:49,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:16:49,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:16:49,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:16:49,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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 21:16:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 21:16:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:16:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:16:49,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:16:50,797 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:16:50,797 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 21:16:50,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:50 BoogieIcfgContainer [2020-11-29 21:16:50,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:16:50,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:16:50,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:16:50,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:16:50,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:16:48" (1/3) ... [2020-11-29 21:16:50,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610012fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:16:50, skipping insertion in model container [2020-11-29 21:16:50,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:49" (2/3) ... [2020-11-29 21:16:50,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610012fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:16:50, skipping insertion in model container [2020-11-29 21:16:50,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:50" (3/3) ... [2020-11-29 21:16:50,808 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-11-29 21:16:50,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:16:50,827 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 21:16:50,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 21:16:50,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:16:50,900 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:16:50,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:16:50,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:16:50,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:16:50,900 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:16:50,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:16:50,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:16:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 21:16:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 21:16:50,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:16:50,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 21:16:50,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:16:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:50,926 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-29 21:16:50,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:16:50,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107924226] [2020-11-29 21:16:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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 21:16:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:51,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:16:51,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:51,192 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 21:16:51,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:16:51,264 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 21:16:51,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107924226] [2020-11-29 21:16:51,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:16:51,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 21:16:51,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934123466] [2020-11-29 21:16:51,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:16:51,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:16:51,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:16:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:16:51,298 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-11-29 21:16:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:16:52,161 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-29 21:16:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:16:52,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-11-29 21:16:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:16:52,171 INFO L225 Difference]: With dead ends: 30 [2020-11-29 21:16:52,171 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 21:16:52,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:16:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 21:16:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 21:16:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 21:16:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-29 21:16:52,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-11-29 21:16:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:16:52,208 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-29 21:16:52,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:16:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-29 21:16:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 21:16:52,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:16:52,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:16:52,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 21:16:52,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:16:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-11-29 21:16:52,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:16:52,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753871488] [2020-11-29 21:16:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/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 21:16:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:52,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:16:52,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:52,859 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 21:16:52,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:16:52,929 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 21:16:52,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753871488] [2020-11-29 21:16:52,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:16:52,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 21:16:52,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129852181] [2020-11-29 21:16:52,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:16:52,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:16:52,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:16:52,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:16:52,934 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-11-29 21:16:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:16:53,390 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-11-29 21:16:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:16:53,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-29 21:16:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:16:53,392 INFO L225 Difference]: With dead ends: 11 [2020-11-29 21:16:53,392 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 21:16:53,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:16:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 21:16:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 21:16:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 21:16:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-11-29 21:16:53,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-11-29 21:16:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:16:53,395 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-11-29 21:16:53,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:16:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-11-29 21:16:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:16:53,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:16:53,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:53,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 21:16:53,603 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:16:53,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:53,605 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-11-29 21:16:53,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:16:53,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237104497] [2020-11-29 21:16:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 21:16:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:53,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:53,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:54,025 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 21:16:54,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:16:54,070 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 21:16:54,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237104497] [2020-11-29 21:16:54,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:16:54,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 21:16:54,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026382515] [2020-11-29 21:16:54,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:16:54,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:16:54,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:16:54,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:16:54,073 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2020-11-29 21:16:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:16:55,002 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-11-29 21:16:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:16:55,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-29 21:16:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:16:55,009 INFO L225 Difference]: With dead ends: 9 [2020-11-29 21:16:55,009 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:16:55,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:16:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:16:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:16:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:16:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:16:55,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-29 21:16:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:16:55,011 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:16:55,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:16:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:16:55,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:16:55,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 21:16:55,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:16:55,219 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:16:55,219 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 21:16:55,219 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,220 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-11-29 21:16:55,220 INFO L274 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2020-11-29 21:16:55,220 INFO L274 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2020-11-29 21:16:55,220 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,220 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,221 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,221 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,221 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:16:55,221 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,221 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,221 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:16:55,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:16:55,222 INFO L274 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2020-11-29 21:16:55,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 21:16:55,223 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-29 21:16:55,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:16:55 BoogieIcfgContainer [2020-11-29 21:16:55,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:16:55,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:16:55,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:16:55,247 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:16:55,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:50" (3/4) ... [2020-11-29 21:16:55,251 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:16:55,264 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 21:16:55,264 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:16:55,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:16:55,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:16:55,318 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6fedf121-2f52-47b7-a5d9-3e8854090c4e/bin/uautomizer/witness.graphml [2020-11-29 21:16:55,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:16:55,325 INFO L168 Benchmark]: Toolchain (without parser) took 6466.93 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 40.9 MB in the end (delta: -13.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:55,326 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.4 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:55,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.56 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 31.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:55,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.77 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.2 MB in the beginning and 44.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:55,333 INFO L168 Benchmark]: Boogie Preprocessor took 63.17 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 43.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:55,333 INFO L168 Benchmark]: RCFGBuilder took 1428.83 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 31.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:55,334 INFO L168 Benchmark]: TraceAbstraction took 4445.07 ms. Allocated memory is still 60.8 MB. Free memory was 31.3 MB in the beginning and 43.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:55,334 INFO L168 Benchmark]: Witness Printer took 76.27 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 40.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:55,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.4 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.56 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 31.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.77 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.2 MB in the beginning and 44.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.17 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 43.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1428.83 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 31.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4445.07 ms. Allocated memory is still 60.8 MB. Free memory was 31.3 MB in the beginning and 43.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 76.27 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 40.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 33 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...