./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 064927d7c1e3d8158c8524deee46f65d988c7936 .............................................................................................................................................................................................................................................................................................................................................................. 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_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 064927d7c1e3d8158c8524deee46f65d988c7936 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 15:00:16,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:00:16,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:00:16,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:00:16,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:00:16,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:00:16,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:00:16,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:00:16,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:00:16,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:00:16,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:00:16,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:00:16,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:00:16,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:00:16,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:00:16,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:00:16,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:00:16,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:00:16,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:00:16,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:00:16,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:00:16,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:00:16,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:00:16,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:00:16,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:00:16,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:00:16,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:00:16,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:00:16,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:00:16,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:00:16,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:00:16,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:00:16,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:00:16,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:00:16,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:00:16,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:00:16,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:00:16,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:00:16,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:00:16,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:00:16,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:00:16,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:00:16,667 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:00:16,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:00:16,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:00:16,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:00:16,669 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:00:16,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:00:16,669 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:00:16,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:00:16,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:00:16,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:00:16,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:00:16,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:00:16,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:00:16,670 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:00:16,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:00:16,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:00:16,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:00:16,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:00:16,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:00:16,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:00:16,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:00:16,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:00:16,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:00:16,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:00:16,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:00:16,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:00:16,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:00:16,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:00:16,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:00:16,673 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_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-12-07 15:00:16,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:00:16,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:00:16,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:00:16,793 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:00:16,793 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:00:16,793 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-12-07 15:00:16,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/ec389b77f/37f6fa835b994e5180c85363cf007769/FLAG1560727b3 [2019-12-07 15:00:17,266 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:00:17,266 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-12-07 15:00:17,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/ec389b77f/37f6fa835b994e5180c85363cf007769/FLAG1560727b3 [2019-12-07 15:00:17,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/ec389b77f/37f6fa835b994e5180c85363cf007769 [2019-12-07 15:00:17,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:00:17,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:00:17,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:00:17,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:00:17,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:00:17,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12624de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17, skipping insertion in model container [2019-12-07 15:00:17,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:00:17,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:00:17,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:00:17,471 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:00:17,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:00:17,503 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:00:17,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17 WrapperNode [2019-12-07 15:00:17,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:00:17,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:00:17,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:00:17,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:00:17,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:00:17,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:00:17,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:00:17,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:00:17,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... [2019-12-07 15:00:17,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:00:17,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:00:17,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:00:17,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:00:17,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 15:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:00:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:00:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:00:17,799 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:00:17,800 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:00:17,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:17 BoogieIcfgContainer [2019-12-07 15:00:17,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:00:17,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:00:17,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:00:17,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:00:17,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:00:17" (1/3) ... [2019-12-07 15:00:17,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38579880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:00:17, skipping insertion in model container [2019-12-07 15:00:17,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:17" (2/3) ... [2019-12-07 15:00:17,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38579880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:00:17, skipping insertion in model container [2019-12-07 15:00:17,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:17" (3/3) ... [2019-12-07 15:00:17,805 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-12-07 15:00:17,812 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:00:17,816 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:00:17,825 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:00:17,840 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:00:17,840 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:00:17,841 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:00:17,841 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:00:17,841 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:00:17,841 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:00:17,841 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:00:17,841 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:00:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 15:00:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:00:17,855 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:17,855 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:17,856 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 15:00:17,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:17,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160527675] [2019-12-07 15:00:17,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:17,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160527675] [2019-12-07 15:00:17,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:17,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:00:17,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76961697] [2019-12-07 15:00:17,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:00:17,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:17,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:00:17,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:00:17,966 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 15:00:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:17,979 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 15:00:17,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:00:17,980 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:00:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:17,987 INFO L225 Difference]: With dead ends: 62 [2019-12-07 15:00:17,987 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 15:00:17,989 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 [2019-12-07 15:00:18,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 15:00:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 15:00:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:00:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 15:00:18,013 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 15:00:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:18,014 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 15:00:18,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:00:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 15:00:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:00:18,015 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:18,015 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:18,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:18,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 15:00:18,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:18,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400810583] [2019-12-07 15:00:18,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:18,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400810583] [2019-12-07 15:00:18,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:18,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:00:18,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905421741] [2019-12-07 15:00:18,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:00:18,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:18,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:00:18,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:00:18,074 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-12-07 15:00:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:18,125 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-12-07 15:00:18,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:00:18,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 15:00:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:18,127 INFO L225 Difference]: With dead ends: 53 [2019-12-07 15:00:18,127 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 15:00:18,128 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 [2019-12-07 15:00:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 15:00:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-12-07 15:00:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:00:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 15:00:18,133 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 15:00:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:18,134 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 15:00:18,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:00:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 15:00:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:00:18,135 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:18,135 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:18,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-12-07 15:00:18,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:18,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807558001] [2019-12-07 15:00:18,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:18,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807558001] [2019-12-07 15:00:18,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:18,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:00:18,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209294283] [2019-12-07 15:00:18,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:00:18,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:00:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:00:18,172 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 15:00:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:18,204 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-12-07 15:00:18,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:00:18,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 15:00:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:18,205 INFO L225 Difference]: With dead ends: 55 [2019-12-07 15:00:18,205 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 15:00:18,205 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 [2019-12-07 15:00:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 15:00:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-12-07 15:00:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:00:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 15:00:18,209 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-12-07 15:00:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:18,209 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 15:00:18,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:00:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 15:00:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:00:18,210 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:18,210 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:18,210 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:18,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 15:00:18,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:18,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823362394] [2019-12-07 15:00:18,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:18,253 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:18,253 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:00:18,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:00:18 BoogieIcfgContainer [2019-12-07 15:00:18,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:00:18,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:00:18,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:00:18,273 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:00:18,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:17" (3/4) ... [2019-12-07 15:00:18,275 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:00:18,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:00:18,277 INFO L168 Benchmark]: Toolchain (without parser) took 992.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.5 MB). Free memory was 949.0 MB in the beginning and 994.7 MB in the end (delta: -45.7 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:18,278 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:18,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.5 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -122.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:18,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.89 ms. Allocated memory is still 1.1 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. [2019-12-07 15:00:18,279 INFO L168 Benchmark]: Boogie Preprocessor took 24.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:18,280 INFO L168 Benchmark]: RCFGBuilder took 238.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:18,280 INFO L168 Benchmark]: TraceAbstraction took 471.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 994.7 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:18,280 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.1 GB. Free memory is still 994.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:18,283 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 218.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.5 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -122.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.89 ms. Allocated memory is still 1.1 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. * Boogie Preprocessor took 24.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 238.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 471.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 994.7 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.1 GB. Free memory is still 994.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, 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, 0.0s 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 0.1.25-f470102 [2019-12-07 15:00:19,748 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-07 15:00:19,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:00:19,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:00:19,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:00:19,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:00:19,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:00:19,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:00:19,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:00:19,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:00:19,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:00:19,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:00:19,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:00:19,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:00:19,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:00:19,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:00:19,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:00:19,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:00:19,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:00:19,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:00:19,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:00:19,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:00:19,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:00:19,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:00:19,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:00:19,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:00:19,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:00:19,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:00:19,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:00:19,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:00:19,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:00:19,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:00:19,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:00:19,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:00:19,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:00:19,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:00:19,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:00:19,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:00:19,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:00:19,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 15:00:19,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:00:19,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:00:19,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:00:19,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:00:19,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:00:19,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:00:19,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:00:19,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:00:19,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:00:19,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:00:19,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:00:19,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:00:19,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:00:19,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:00:19,797 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 15:00:19,797 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:00:19,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:00:19,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:00:19,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:00:19,797 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_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-12-07 15:00:19,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:00:19,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:00:19,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:00:19,976 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:00:19,977 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:00:19,977 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-12-07 15:00:20,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/ece701598/33d6698ab83b4e09ab84ca5940a3b0a3/FLAG3d6ea9721 [2019-12-07 15:00:20,416 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:00:20,416 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-12-07 15:00:20,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/ece701598/33d6698ab83b4e09ab84ca5940a3b0a3/FLAG3d6ea9721 [2019-12-07 15:00:20,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/data/ece701598/33d6698ab83b4e09ab84ca5940a3b0a3 [2019-12-07 15:00:20,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:00:20,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:00:20,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:00:20,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:00:20,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:00:20,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:00:20" (1/1) ... [2019-12-07 15:00:20,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197b78eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:20, skipping insertion in model container [2019-12-07 15:00:20,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:00:20" (1/1) ... [2019-12-07 15:00:20,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:00:20,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:00:20,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:00:20,934 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:00:20,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:00:21,000 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:00:21,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21 WrapperNode [2019-12-07 15:00:21,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:00:21,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:00:21,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:00:21,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:00:21,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:00:21,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:00:21,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:00:21,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:00:21,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... [2019-12-07 15:00:21,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:00:21,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:00:21,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:00:21,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:00:21,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 15:00:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:00:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:00:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:00:21,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:00:21,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:00:21,341 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:00:21,341 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:00:21,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:21 BoogieIcfgContainer [2019-12-07 15:00:21,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:00:21,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:00:21,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:00:21,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:00:21,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:00:20" (1/3) ... [2019-12-07 15:00:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3032bec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:00:21, skipping insertion in model container [2019-12-07 15:00:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:21" (2/3) ... [2019-12-07 15:00:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3032bec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:00:21, skipping insertion in model container [2019-12-07 15:00:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:21" (3/3) ... [2019-12-07 15:00:21,346 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-12-07 15:00:21,352 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:00:21,357 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:00:21,364 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:00:21,378 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:00:21,378 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:00:21,378 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:00:21,378 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:00:21,379 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:00:21,379 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:00:21,379 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:00:21,379 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:00:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 15:00:21,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:00:21,391 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:21,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:21,392 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:21,396 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 15:00:21,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:21,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002871315] [2019-12-07 15:00:21,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:21,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:00:21,457 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:21,467 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:21,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002871315] [2019-12-07 15:00:21,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:21,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:00:21,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436243299] [2019-12-07 15:00:21,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:00:21,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:21,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:00:21,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:00:21,484 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 15:00:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:21,496 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 15:00:21,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:00:21,497 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:00:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:21,504 INFO L225 Difference]: With dead ends: 62 [2019-12-07 15:00:21,505 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 15:00:21,507 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 [2019-12-07 15:00:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 15:00:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 15:00:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:00:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 15:00:21,530 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 15:00:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:21,530 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 15:00:21,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:00:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 15:00:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:00:21,531 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:21,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:21,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:00:21,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 15:00:21,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:21,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215895438] [2019-12-07 15:00:21,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:21,858 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:00:21,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:21,879 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:21,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215895438] [2019-12-07 15:00:21,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:21,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:00:21,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971321758] [2019-12-07 15:00:21,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:00:21,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:00:21,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:00:21,895 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-12-07 15:00:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:22,013 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-12-07 15:00:22,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:00:22,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 15:00:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:22,014 INFO L225 Difference]: With dead ends: 68 [2019-12-07 15:00:22,014 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 15:00:22,015 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 [2019-12-07 15:00:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 15:00:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-12-07 15:00:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:00:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 15:00:22,020 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 15:00:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:22,020 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 15:00:22,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:00:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 15:00:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:00:22,021 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:22,021 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:22,222 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:00:22,222 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:22,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 15:00:22,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:22,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851091860] [2019-12-07 15:00:22,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:22,306 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:00:22,308 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:22,339 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:22,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:00:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:22,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851091860] [2019-12-07 15:00:22,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:22,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:00:22,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949153705] [2019-12-07 15:00:22,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:00:22,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:00:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:00:22,389 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-12-07 15:00:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:22,454 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-12-07 15:00:22,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:00:22,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-12-07 15:00:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:22,455 INFO L225 Difference]: With dead ends: 52 [2019-12-07 15:00:22,455 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 15:00:22,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:00:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 15:00:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 15:00:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 15:00:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-12-07 15:00:22,459 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-12-07 15:00:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:22,459 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-12-07 15:00:22,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:00:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-12-07 15:00:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:00:22,459 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:22,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:22,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:00:22,661 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:22,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-12-07 15:00:22,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:22,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855636954] [2019-12-07 15:00:22,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:22,783 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:00:22,784 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:22,794 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:22,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855636954] [2019-12-07 15:00:22,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:22,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:00:22,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805018538] [2019-12-07 15:00:22,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:00:22,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:22,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:00:22,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:00:22,807 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-12-07 15:00:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:22,936 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-12-07 15:00:22,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:00:22,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 15:00:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:22,938 INFO L225 Difference]: With dead ends: 65 [2019-12-07 15:00:22,938 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 15:00:22,938 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 [2019-12-07 15:00:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 15:00:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-12-07 15:00:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 15:00:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-12-07 15:00:22,942 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-12-07 15:00:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:22,943 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-12-07 15:00:22,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:00:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-12-07 15:00:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:00:22,943 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:22,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:23,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:00:23,145 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:23,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-12-07 15:00:23,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:23,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253195185] [2019-12-07 15:00:23,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:23,258 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:00:23,259 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:23,271 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:23,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253195185] [2019-12-07 15:00:23,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:23,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 15:00:23,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787803459] [2019-12-07 15:00:23,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:00:23,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:23,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:00:23,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:00:23,302 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-12-07 15:00:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:23,311 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-12-07 15:00:23,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:00:23,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-07 15:00:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:23,312 INFO L225 Difference]: With dead ends: 40 [2019-12-07 15:00:23,312 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 15:00:23,313 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 [2019-12-07 15:00:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 15:00:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 15:00:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 15:00:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-12-07 15:00:23,316 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-12-07 15:00:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:23,316 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-12-07 15:00:23,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:00:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-12-07 15:00:23,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:00:23,317 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:23,317 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:23,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 15:00:23,519 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-12-07 15:00:23,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:23,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792315416] [2019-12-07 15:00:23,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:23,609 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:00:23,610 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:23,640 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:23,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:00:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:23,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792315416] [2019-12-07 15:00:23,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:23,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 15:00:23,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334563702] [2019-12-07 15:00:23,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:00:23,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:23,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:00:23,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:00:23,678 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-12-07 15:00:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:23,760 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-12-07 15:00:23,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:00:23,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-12-07 15:00:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:23,761 INFO L225 Difference]: With dead ends: 42 [2019-12-07 15:00:23,762 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 15:00:23,762 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 [2019-12-07 15:00:23,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 15:00:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-12-07 15:00:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 15:00:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-12-07 15:00:23,766 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-12-07 15:00:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:23,766 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-12-07 15:00:23,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:00:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-12-07 15:00:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:00:23,767 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:23,767 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:23,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 15:00:23,968 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:23,968 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-12-07 15:00:23,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:23,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862075020] [2019-12-07 15:00:23,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:24,036 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:00:24,038 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:24,064 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:00:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:24,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862075020] [2019-12-07 15:00:24,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:24,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 15:00:24,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205361864] [2019-12-07 15:00:24,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:00:24,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:00:24,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:00:24,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:00:24,117 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-12-07 15:00:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:24,180 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-12-07 15:00:24,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:00:24,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-07 15:00:24,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:00:24,181 INFO L225 Difference]: With dead ends: 45 [2019-12-07 15:00:24,181 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 15:00:24,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:00:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 15:00:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 15:00:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:00:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-12-07 15:00:24,185 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-12-07 15:00:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:00:24,185 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-12-07 15:00:24,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:00:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-12-07 15:00:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:00:24,186 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:00:24,186 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] [2019-12-07 15:00:24,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 15:00:24,388 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:00:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-12-07 15:00:24,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:00:24,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834362364] [2019-12-07 15:00:24,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/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 [2019-12-07 15:00:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:24,667 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 15:00:24,667 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:00:24,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 15:00:24,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:00:24 BoogieIcfgContainer [2019-12-07 15:00:24,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:00:24,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:00:24,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:00:24,914 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:00:24,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:21" (3/4) ... [2019-12-07 15:00:24,916 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:00:24,951 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_291ea1f0-231c-4dcb-8c3a-fffdbe247071/bin/uautomizer/witness.graphml [2019-12-07 15:00:24,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:00:24,953 INFO L168 Benchmark]: Toolchain (without parser) took 4154.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 952.4 MB in the beginning and 860.6 MB in the end (delta: 91.8 MB). Peak memory consumption was 211.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:24,953 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:24,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -156.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:24,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:24,954 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:24,954 INFO L168 Benchmark]: RCFGBuilder took 288.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:24,955 INFO L168 Benchmark]: TraceAbstraction took 3570.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 860.6 MB in the end (delta: 217.6 MB). Peak memory consumption was 217.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:24,955 INFO L168 Benchmark]: Witness Printer took 38.02 ms. Allocated memory is still 1.1 GB. Free memory is still 860.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:24,956 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -156.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 288.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3570.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 860.6 MB in the end (delta: 217.6 MB). Peak memory consumption was 217.6 MB. Max. memory is 11.5 GB. * Witness Printer took 38.02 ms. Allocated memory is still 1.1 GB. Free memory is still 860.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L46] COND FALSE !(__fpclassify_double(x) == 0) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y [L51] return x < y ? x : y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L55] __uint32_t msw; [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s 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, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10764 SizeOfPredicates, 27 NumberOfNonLiveVariables, 358 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...