./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36a0a55241cede481b157c1ab9f348d708a5b166 ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36a0a55241cede481b157c1ab9f348d708a5b166 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 02:22:43,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:22:43,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:22:43,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:22:43,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:22:43,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:22:43,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:22:43,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:22:43,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:22:43,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:22:43,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:22:43,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:22:43,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:22:43,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:22:43,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:22:43,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:22:43,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:22:43,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:22:43,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:22:43,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:22:43,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:22:43,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:22:43,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:22:43,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:22:43,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:22:43,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:22:43,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:22:43,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:22:43,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:22:43,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:22:43,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:22:43,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:22:43,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:22:43,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:22:43,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:22:43,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:22:43,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:22:43,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:22:43,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:22:43,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:22:43,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:22:43,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 02:22:43,433 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:22:43,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:22:43,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:22:43,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:22:43,435 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:22:43,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:22:43,436 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:22:43,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:22:43,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:22:43,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:22:43,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:22:43,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:22:43,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:22:43,437 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:22:43,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:22:43,438 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:22:43,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:22:43,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:22:43,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:22:43,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:22:43,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:22:43,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:22:43,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:22:43,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:22:43,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:22:43,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:22:43,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 02:22:43,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:22:43,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ce7457a2-3d22-429e-934d-01d874241717/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(__VERIFIER_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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-11-20 02:22:43,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:22:43,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:22:43,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:22:43,647 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:22:43,648 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:22:43,648 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-20 02:22:43,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/8bc9eb304/fc2e1b0f14b643a8b937cc72a55ca6f5/FLAGc89ae7c8b [2019-11-20 02:22:44,095 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:22:44,097 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-20 02:22:44,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/8bc9eb304/fc2e1b0f14b643a8b937cc72a55ca6f5/FLAGc89ae7c8b [2019-11-20 02:22:44,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/8bc9eb304/fc2e1b0f14b643a8b937cc72a55ca6f5 [2019-11-20 02:22:44,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:22:44,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:22:44,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:22:44,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:22:44,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:22:44,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332ee523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44, skipping insertion in model container [2019-11-20 02:22:44,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,492 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:22:44,505 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:22:44,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:22:44,668 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:22:44,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:22:44,789 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:22:44,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44 WrapperNode [2019-11-20 02:22:44,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:22:44,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:22:44,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:22:44,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:22:44,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:22:44,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:22:44,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:22:44,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:22:44,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... [2019-11-20 02:22:44,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:22:44,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:22:44,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:22:44,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:22:44,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/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 [2019-11-20 02:22:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 02:22:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 02:22:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:22:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:22:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 02:22:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:22:45,271 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:22:45,272 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 02:22:45,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:22:45 BoogieIcfgContainer [2019-11-20 02:22:45,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:22:45,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:22:45,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:22:45,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:22:45,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:22:44" (1/3) ... [2019-11-20 02:22:45,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28313e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:22:45, skipping insertion in model container [2019-11-20 02:22:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:44" (2/3) ... [2019-11-20 02:22:45,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28313e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:22:45, skipping insertion in model container [2019-11-20 02:22:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:22:45" (3/3) ... [2019-11-20 02:22:45,280 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-11-20 02:22:45,288 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:22:45,293 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:22:45,300 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:22:45,322 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:22:45,322 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:22:45,322 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:22:45,322 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:22:45,323 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:22:45,323 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:22:45,323 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:22:45,323 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:22:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 02:22:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 02:22:45,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:45,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:45,342 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:45,347 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 02:22:45,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:22:45,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040296171] [2019-11-20 02:22:45,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:22:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:45,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040296171] [2019-11-20 02:22:45,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:45,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 02:22:45,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374577792] [2019-11-20 02:22:45,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 02:22:45,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:22:45,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 02:22:45,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:22:45,475 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 02:22:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:45,494 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 02:22:45,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 02:22:45,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 02:22:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:45,506 INFO L225 Difference]: With dead ends: 62 [2019-11-20 02:22:45,506 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 02:22:45,509 INFO L630 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 [2019-11-20 02:22:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 02:22:45,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 02:22:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 02:22:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 02:22:45,543 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 02:22:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:45,544 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 02:22:45,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 02:22:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 02:22:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 02:22:45,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:45,545 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:45,545 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 02:22:45,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:22:45,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592735991] [2019-11-20 02:22:45,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:22:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:45,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592735991] [2019-11-20 02:22:45,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:45,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 02:22:45,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940436001] [2019-11-20 02:22:45,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:22:45,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:22:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:22:45,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:22:45,618 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-20 02:22:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:45,696 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-20 02:22:45,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:22:45,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 02:22:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:45,699 INFO L225 Difference]: With dead ends: 53 [2019-11-20 02:22:45,699 INFO L226 Difference]: Without dead ends: 44 [2019-11-20 02:22:45,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:22:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-20 02:22:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-20 02:22:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:22:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 02:22:45,707 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 02:22:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:45,707 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 02:22:45,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:22:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 02:22:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:22:45,710 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:45,710 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:45,710 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:45,711 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-20 02:22:45,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:22:45,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384899665] [2019-11-20 02:22:45,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:22:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:45,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384899665] [2019-11-20 02:22:45,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:45,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 02:22:45,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995697100] [2019-11-20 02:22:45,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:22:45,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:22:45,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:22:45,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:22:45,794 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 02:22:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:45,841 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-20 02:22:45,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:22:45,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 02:22:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:45,843 INFO L225 Difference]: With dead ends: 55 [2019-11-20 02:22:45,843 INFO L226 Difference]: Without dead ends: 46 [2019-11-20 02:22:45,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:22:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-20 02:22:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-20 02:22:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:22:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 02:22:45,849 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-20 02:22:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:45,850 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 02:22:45,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:22:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 02:22:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:22:45,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:45,851 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:45,851 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 02:22:45,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:22:45,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110051716] [2019-11-20 02:22:45,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:22:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:22:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:22:45,929 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:22:45,929 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:22:45,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:22:45 BoogieIcfgContainer [2019-11-20 02:22:45,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:22:45,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:22:45,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:22:45,959 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:22:45,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:22:45" (3/4) ... [2019-11-20 02:22:45,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 02:22:45,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:22:45,966 INFO L168 Benchmark]: Toolchain (without parser) took 1487.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -109.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:45,966 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:22:45,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:45,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:22:45,968 INFO L168 Benchmark]: Boogie Preprocessor took 30.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:45,969 INFO L168 Benchmark]: RCFGBuilder took 411.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:45,969 INFO L168 Benchmark]: TraceAbstraction took 684.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:45,970 INFO L168 Benchmark]: Witness Printer took 5.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:22:45,972 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 411.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 684.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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 0.1.24-678e011 [2019-11-20 02:22:48,026 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-20 02:22:48,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:22:48,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:22:48,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:22:48,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:22:48,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:22:48,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:22:48,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:22:48,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:22:48,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:22:48,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:22:48,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:22:48,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:22:48,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:22:48,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:22:48,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:22:48,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:22:48,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:22:48,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:22:48,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:22:48,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:22:48,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:22:48,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:22:48,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:22:48,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:22:48,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:22:48,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:22:48,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:22:48,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:22:48,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:22:48,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 02:22:48,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:22:48,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:22:48,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:22:48,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:22:48,141 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:22:48,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:22:48,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:22:48,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:22:48,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:22:48,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:22:48,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:22:48,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:22:48,143 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 02:22:48,144 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 02:22:48,147 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:22:48,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:22:48,148 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:22:48,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:22:48,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:22:48,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:22:48,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:22:48,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:22:48,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:22:48,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:22:48,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:22:48,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:22:48,157 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 02:22:48,157 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 02:22:48,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:22:48,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 02:22:48,159 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ce7457a2-3d22-429e-934d-01d874241717/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(__VERIFIER_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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-11-20 02:22:48,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:22:48,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:22:48,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:22:48,488 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:22:48,488 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:22:48,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-20 02:22:48,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/6d40cfb52/16adfd903ae1401fa1d2473bde70d97f/FLAGc87aced6f [2019-11-20 02:22:49,068 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:22:49,068 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-20 02:22:49,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/6d40cfb52/16adfd903ae1401fa1d2473bde70d97f/FLAGc87aced6f [2019-11-20 02:22:49,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/data/6d40cfb52/16adfd903ae1401fa1d2473bde70d97f [2019-11-20 02:22:49,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:22:49,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:22:49,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:22:49,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:22:49,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:22:49,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59738a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49, skipping insertion in model container [2019-11-20 02:22:49,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,441 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:22:49,465 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:22:49,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:22:49,703 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:22:49,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:22:49,754 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:22:49,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49 WrapperNode [2019-11-20 02:22:49,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:22:49,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:22:49,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:22:49,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:22:49,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:22:49,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:22:49,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:22:49,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:22:49,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... [2019-11-20 02:22:49,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:22:49,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:22:49,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:22:49,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:22:49,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/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 [2019-11-20 02:22:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 02:22:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 02:22:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:22:49,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:22:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-20 02:22:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:22:50,521 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:22:50,521 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 02:22:50,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:22:50 BoogieIcfgContainer [2019-11-20 02:22:50,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:22:50,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:22:50,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:22:50,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:22:50,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:22:49" (1/3) ... [2019-11-20 02:22:50,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c8cd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:22:50, skipping insertion in model container [2019-11-20 02:22:50,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:22:49" (2/3) ... [2019-11-20 02:22:50,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c8cd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:22:50, skipping insertion in model container [2019-11-20 02:22:50,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:22:50" (3/3) ... [2019-11-20 02:22:50,531 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-11-20 02:22:50,541 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:22:50,548 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:22:50,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:22:50,582 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:22:50,582 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:22:50,582 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:22:50,582 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:22:50,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:22:50,583 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:22:50,583 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:22:50,583 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:22:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 02:22:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 02:22:50,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:50,603 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:50,603 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:50,608 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 02:22:50,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:50,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125185389] [2019-11-20 02:22:50,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/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 [2019-11-20 02:22:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:50,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 02:22:50,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:50,744 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:50,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125185389] [2019-11-20 02:22:50,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:50,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 02:22:50,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245720547] [2019-11-20 02:22:50,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 02:22:50,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:50,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 02:22:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:22:50,780 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 02:22:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:50,803 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 02:22:50,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 02:22:50,805 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 02:22:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:50,815 INFO L225 Difference]: With dead ends: 62 [2019-11-20 02:22:50,815 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 02:22:50,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:22:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 02:22:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 02:22:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 02:22:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 02:22:50,869 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 02:22:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:50,869 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 02:22:50,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 02:22:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 02:22:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 02:22:50,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:50,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:51,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 02:22:51,072 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 02:22:51,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:51,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923218790] [2019-11-20 02:22:51,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/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 [2019-11-20 02:22:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:51,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:22:51,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:51,190 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:51,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923218790] [2019-11-20 02:22:51,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:51,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:22:51,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550372081] [2019-11-20 02:22:51,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:22:51,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:51,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:22:51,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:22:51,225 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-20 02:22:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:51,432 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-20 02:22:51,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:22:51,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 02:22:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:51,434 INFO L225 Difference]: With dead ends: 68 [2019-11-20 02:22:51,435 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 02:22:51,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:22:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 02:22:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-20 02:22:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:22:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 02:22:51,445 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 02:22:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:51,446 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 02:22:51,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:22:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 02:22:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:22:51,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:51,447 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:51,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 02:22:51,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 02:22:51,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:51,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276795292] [2019-11-20 02:22:51,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/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 [2019-11-20 02:22:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:51,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 02:22:51,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:51,776 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:51,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276795292] [2019-11-20 02:22:51,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:51,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 02:22:51,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333350681] [2019-11-20 02:22:51,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:22:51,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:51,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:22:51,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:22:51,818 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 02:22:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:51,896 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-20 02:22:51,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:22:51,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 02:22:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:51,898 INFO L225 Difference]: With dead ends: 52 [2019-11-20 02:22:51,898 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 02:22:51,899 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:22:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 02:22:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-20 02:22:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 02:22:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-20 02:22:51,905 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-20 02:22:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:51,905 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-20 02:22:51,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:22:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-20 02:22:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 02:22:51,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:51,910 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:52,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 02:22:52,124 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:52,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-20 02:22:52,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:52,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404721508] [2019-11-20 02:22:52,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-20 02:22:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:52,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:22:52,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:52,238 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:52,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404721508] [2019-11-20 02:22:52,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:52,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:22:52,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819419594] [2019-11-20 02:22:52,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:22:52,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:52,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:22:52,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:22:52,263 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-20 02:22:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:52,384 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-20 02:22:52,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:22:52,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 02:22:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:52,388 INFO L225 Difference]: With dead ends: 61 [2019-11-20 02:22:52,388 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 02:22:52,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:22:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 02:22:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-20 02:22:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 02:22:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-20 02:22:52,403 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-20 02:22:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:52,404 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-20 02:22:52,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:22:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-20 02:22:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 02:22:52,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:52,405 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:52,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 02:22:52,606 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:52,607 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-20 02:22:52,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:52,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004684] [2019-11-20 02:22:52,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-20 02:22:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:52,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 02:22:52,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:52,706 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:52,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004684] [2019-11-20 02:22:52,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:52,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 02:22:52,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026637882] [2019-11-20 02:22:52,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:22:52,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:52,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:22:52,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:22:52,752 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-20 02:22:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:52,766 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-20 02:22:52,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 02:22:52,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 02:22:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:52,768 INFO L225 Difference]: With dead ends: 38 [2019-11-20 02:22:52,769 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 02:22:52,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:22:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 02:22:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 02:22:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 02:22:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-20 02:22:52,775 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-20 02:22:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:52,776 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-20 02:22:52,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:22:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-20 02:22:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 02:22:52,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:52,778 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:52,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-20 02:22:52,993 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:52,993 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-20 02:22:52,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:52,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947001390] [2019-11-20 02:22:52,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-20 02:22:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:53,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 02:22:53,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:53,156 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:53,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:22:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:53,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947001390] [2019-11-20 02:22:53,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:53,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-20 02:22:53,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795926419] [2019-11-20 02:22:53,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 02:22:53,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 02:22:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 02:22:53,226 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-20 02:22:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:53,356 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-20 02:22:53,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 02:22:53,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-20 02:22:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:53,358 INFO L225 Difference]: With dead ends: 40 [2019-11-20 02:22:53,358 INFO L226 Difference]: Without dead ends: 37 [2019-11-20 02:22:53,359 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-20 02:22:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-20 02:22:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-20 02:22:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 02:22:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-20 02:22:53,370 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-20 02:22:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:53,371 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-20 02:22:53,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 02:22:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-20 02:22:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 02:22:53,373 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:53,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:53,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-20 02:22:53,584 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:53,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-20 02:22:53,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:53,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593864938] [2019-11-20 02:22:53,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-20 02:22:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:22:53,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 02:22:53,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:22:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:53,748 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:22:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:22:53,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593864938] [2019-11-20 02:22:53,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:22:53,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 02:22:53,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131243643] [2019-11-20 02:22:53,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:22:53,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:22:53,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:22:53,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:22:53,787 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-20 02:22:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:22:53,846 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-20 02:22:53,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:22:53,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-20 02:22:53,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:22:53,852 INFO L225 Difference]: With dead ends: 43 [2019-11-20 02:22:53,852 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 02:22:53,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:22:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 02:22:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-20 02:22:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-20 02:22:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-20 02:22:53,858 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-20 02:22:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:22:53,859 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-20 02:22:53,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:22:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-20 02:22:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 02:22:53,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:22:53,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:22:54,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-20 02:22:54,064 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:22:54,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:22:54,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-20 02:22:54,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:22:54,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694345086] [2019-11-20 02:22:54,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-20 02:22:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:22:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:22:54,364 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 02:22:54,365 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:22:54,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-20 02:22:54,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:22:54 BoogieIcfgContainer [2019-11-20 02:22:54,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:22:54,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:22:54,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:22:54,649 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:22:54,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:22:50" (3/4) ... [2019-11-20 02:22:54,653 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 02:22:54,750 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce7457a2-3d22-429e-934d-01d874241717/bin/uautomizer/witness.graphml [2019-11-20 02:22:54,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:22:54,757 INFO L168 Benchmark]: Toolchain (without parser) took 5328.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 961.8 MB in the beginning and 921.0 MB in the end (delta: 40.8 MB). Peak memory consumption was 193.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:54,758 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:22:54,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.87 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:54,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -192.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:54,759 INFO L168 Benchmark]: Boogie Preprocessor took 47.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:22:54,760 INFO L168 Benchmark]: RCFGBuilder took 616.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:54,760 INFO L168 Benchmark]: TraceAbstraction took 4125.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.0 MB in the end (delta: 196.5 MB). Peak memory consumption was 196.5 MB. Max. memory is 11.5 GB. [2019-11-20 02:22:54,763 INFO L168 Benchmark]: Witness Printer took 101.58 ms. Allocated memory is still 1.2 GB. Free memory is still 921.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:22:54,766 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 330.87 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 101.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -192.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 616.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4125.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.0 MB in the end (delta: 196.5 MB). Peak memory consumption was 196.5 MB. Max. memory is 11.5 GB. * Witness Printer took 101.58 ms. Allocated memory is still 1.2 GB. Free memory is still 921.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L36] COND FALSE !(__fpclassify_float(x) == 0) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y [L41] return x < y ? x : y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L45] __uint32_t w; [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7783 SizeOfPredicates, 27 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...