./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................................................................................. 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_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/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 6f57b560c2271100a3cc213cf38aa06905e4b86e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 02:50:11,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:50:11,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:50:11,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:50:11,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:50:11,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:50:11,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:50:11,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:50:11,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:50:11,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:50:11,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:50:11,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:50:11,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:50:11,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:50:11,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:50:11,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:50:11,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:50:11,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:50:11,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:50:11,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:50:11,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:50:11,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:50:11,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:50:11,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:50:11,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:50:11,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:50:11,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:50:11,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:50:11,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:50:11,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:50:11,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:50:11,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:50:11,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:50:11,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:50:11,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:50:11,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:50:11,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:50:11,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:50:11,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:50:11,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:50:11,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:50:11,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 02:50:11,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:50:11,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:50:11,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:50:11,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:50:11,548 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:50:11,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:50:11,548 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:50:11,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:50:11,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:50:11,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:50:11,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:50:11,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:50:11,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:50:11,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:50:11,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:50:11,551 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:50:11,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:50:11,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:50:11,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:50:11,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:50:11,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:50:11,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:50:11,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:50:11,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:50:11,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:50:11,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:50:11,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 02:50:11,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:50:11,554 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_390a78d1-f009-475c-a0c1-cae1eb02ed8a/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-20 02:50:11,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:50:11,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:50:11,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:50:11,741 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:50:11,742 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:50:11,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-20 02:50:11,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/9c5b0074f/25f5e3d4b7344fd0bc632619944c1347/FLAG3e76a4216 [2019-11-20 02:50:12,184 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:50:12,185 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-20 02:50:12,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/9c5b0074f/25f5e3d4b7344fd0bc632619944c1347/FLAG3e76a4216 [2019-11-20 02:50:12,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/9c5b0074f/25f5e3d4b7344fd0bc632619944c1347 [2019-11-20 02:50:12,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:50:12,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:50:12,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:50:12,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:50:12,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:50:12,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9d64dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12, skipping insertion in model container [2019-11-20 02:50:12,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,619 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:50:12,634 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:50:12,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:50:12,862 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:50:12,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:50:12,936 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:50:12,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12 WrapperNode [2019-11-20 02:50:12,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:50:12,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:50:12,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:50:12,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:50:12,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:50:12,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:50:12,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:50:12,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:50:12,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:12,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:13,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:13,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:13,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... [2019-11-20 02:50:13,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:50:13,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:50:13,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:50:13,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:50:13,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:50:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 02:50:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 02:50:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:50:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:50:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 02:50:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:50:13,624 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:50:13,624 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 02:50:13,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:50:13 BoogieIcfgContainer [2019-11-20 02:50:13,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:50:13,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:50:13,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:50:13,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:50:13,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:50:12" (1/3) ... [2019-11-20 02:50:13,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c04bc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:50:13, skipping insertion in model container [2019-11-20 02:50:13,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:12" (2/3) ... [2019-11-20 02:50:13,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c04bc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:50:13, skipping insertion in model container [2019-11-20 02:50:13,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:50:13" (3/3) ... [2019-11-20 02:50:13,638 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-20 02:50:13,646 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:50:13,651 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:50:13,658 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:50:13,677 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:50:13,677 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:50:13,677 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:50:13,677 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:50:13,678 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:50:13,678 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:50:13,678 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:50:13,678 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:50:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 02:50:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 02:50:13,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:13,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:13,698 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:13,703 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 02:50:13,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:50:13,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860257337] [2019-11-20 02:50:13,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:50:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:13,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860257337] [2019-11-20 02:50:13,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:13,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 02:50:13,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196151305] [2019-11-20 02:50:13,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 02:50:13,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:50:13,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 02:50:13,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:50:13,826 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 02:50:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:13,843 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 02:50:13,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 02:50:13,845 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 02:50:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:13,854 INFO L225 Difference]: With dead ends: 62 [2019-11-20 02:50:13,854 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 02:50:13,857 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:50:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 02:50:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 02:50:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 02:50:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 02:50:13,885 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 02:50:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:13,885 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 02:50:13,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 02:50:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 02:50:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 02:50:13,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:13,887 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:13,887 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:13,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 02:50:13,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:50:13,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953371725] [2019-11-20 02:50:13,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:50:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:13,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953371725] [2019-11-20 02:50:13,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:13,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 02:50:13,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830480961] [2019-11-20 02:50:13,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:50:13,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:50:13,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:50:13,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:50:13,963 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-20 02:50:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:14,060 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-20 02:50:14,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:50:14,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 02:50:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:14,063 INFO L225 Difference]: With dead ends: 53 [2019-11-20 02:50:14,063 INFO L226 Difference]: Without dead ends: 44 [2019-11-20 02:50:14,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:50:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-20 02:50:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-20 02:50:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:50:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 02:50:14,075 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 02:50:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:14,076 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 02:50:14,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:50:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 02:50:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:50:14,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:14,078 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:14,079 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:14,081 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-20 02:50:14,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:50:14,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330341976] [2019-11-20 02:50:14,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:50:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:14,165 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330341976] [2019-11-20 02:50:14,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:14,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 02:50:14,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172858105] [2019-11-20 02:50:14,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:50:14,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:50:14,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:50:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:50:14,166 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 02:50:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:14,229 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-20 02:50:14,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:50:14,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 02:50:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:14,231 INFO L225 Difference]: With dead ends: 55 [2019-11-20 02:50:14,231 INFO L226 Difference]: Without dead ends: 46 [2019-11-20 02:50:14,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:50:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-20 02:50:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-20 02:50:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:50:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 02:50:14,236 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-20 02:50:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:14,237 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 02:50:14,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:50:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 02:50:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:50:14,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:14,238 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:14,238 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 02:50:14,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:50:14,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925319193] [2019-11-20 02:50:14,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:50:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:50:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:50:14,294 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:50:14,294 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:50:14,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:50:14 BoogieIcfgContainer [2019-11-20 02:50:14,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:50:14,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:50:14,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:50:14,319 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:50:14,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:50:13" (3/4) ... [2019-11-20 02:50:14,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 02:50:14,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:50:14,324 INFO L168 Benchmark]: Toolchain (without parser) took 1726.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -101.5 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:14,325 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:50:14,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:14,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:14,326 INFO L168 Benchmark]: Boogie Preprocessor took 29.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:50:14,327 INFO L168 Benchmark]: RCFGBuilder took 614.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:14,328 INFO L168 Benchmark]: TraceAbstraction took 692.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:14,328 INFO L168 Benchmark]: Witness Printer took 3.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:50:14,331 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 614.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 692.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 02:50:16,085 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-20 02:50:16,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:50:16,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:50:16,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:50:16,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:50:16,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:50:16,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:50:16,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:50:16,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:50:16,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:50:16,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:50:16,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:50:16,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:50:16,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:50:16,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:50:16,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:50:16,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:50:16,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:50:16,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:50:16,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:50:16,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:50:16,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:50:16,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:50:16,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:50:16,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:50:16,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:50:16,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:50:16,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:50:16,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:50:16,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:50:16,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:50:16,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:50:16,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:50:16,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:50:16,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:50:16,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:50:16,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:50:16,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:50:16,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 02:50:16,147 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:50:16,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:50:16,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:50:16,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:50:16,149 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:50:16,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:50:16,149 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:50:16,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:50:16,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:50:16,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:50:16,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:50:16,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:50:16,151 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 02:50:16,151 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 02:50:16,151 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:50:16,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:50:16,152 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:50:16,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:50:16,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:50:16,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:50:16,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:50:16,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:50:16,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:50:16,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:50:16,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:50:16,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:50:16,154 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 02:50:16,154 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 02:50:16,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:50:16,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 02:50:16,155 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_390a78d1-f009-475c-a0c1-cae1eb02ed8a/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-20 02:50:16,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:50:16,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:50:16,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:50:16,530 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:50:16,531 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:50:16,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-20 02:50:16,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/dc14565e4/7ae1daeaf3ac4365b4a3cfc900a2c3df/FLAGd099bc24f [2019-11-20 02:50:16,935 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:50:16,938 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-20 02:50:16,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/dc14565e4/7ae1daeaf3ac4365b4a3cfc900a2c3df/FLAGd099bc24f [2019-11-20 02:50:17,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/data/dc14565e4/7ae1daeaf3ac4365b4a3cfc900a2c3df [2019-11-20 02:50:17,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:50:17,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:50:17,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:50:17,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:50:17,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:50:17,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8b3269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17, skipping insertion in model container [2019-11-20 02:50:17,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,326 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:50:17,350 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:50:17,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:50:17,564 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:50:17,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:50:17,643 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:50:17,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17 WrapperNode [2019-11-20 02:50:17,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:50:17,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:50:17,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:50:17,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:50:17,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:50:17,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:50:17,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:50:17,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:50:17,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... [2019-11-20 02:50:17,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:50:17,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:50:17,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:50:17,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:50:17,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:50:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-20 02:50:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 02:50:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 02:50:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:50:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:50:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:50:18,353 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:50:18,354 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 02:50:18,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:50:18 BoogieIcfgContainer [2019-11-20 02:50:18,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:50:18,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:50:18,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:50:18,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:50:18,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:50:17" (1/3) ... [2019-11-20 02:50:18,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269ccafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:50:18, skipping insertion in model container [2019-11-20 02:50:18,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:50:17" (2/3) ... [2019-11-20 02:50:18,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269ccafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:50:18, skipping insertion in model container [2019-11-20 02:50:18,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:50:18" (3/3) ... [2019-11-20 02:50:18,361 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-20 02:50:18,367 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:50:18,373 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:50:18,384 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:50:18,406 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:50:18,406 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:50:18,406 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:50:18,406 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:50:18,407 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:50:18,407 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:50:18,407 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:50:18,407 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:50:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 02:50:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 02:50:18,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:18,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:18,427 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:18,433 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 02:50:18,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:18,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485076081] [2019-11-20 02:50:18,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:18,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 02:50:18,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:18,536 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:18,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485076081] [2019-11-20 02:50:18,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:18,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 02:50:18,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491828362] [2019-11-20 02:50:18,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 02:50:18,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:18,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 02:50:18,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:50:18,563 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 02:50:18,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:18,587 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 02:50:18,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 02:50:18,588 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 02:50:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:18,602 INFO L225 Difference]: With dead ends: 62 [2019-11-20 02:50:18,602 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 02:50:18,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:50:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 02:50:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 02:50:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 02:50:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 02:50:18,649 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 02:50:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:18,649 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 02:50:18,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 02:50:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 02:50:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 02:50:18,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:18,650 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:18,851 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 02:50:18,851 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 02:50:18,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:18,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034193506] [2019-11-20 02:50:18,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:18,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:50:18,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:18,947 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:18,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034193506] [2019-11-20 02:50:18,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:18,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:50:18,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497001100] [2019-11-20 02:50:18,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:50:18,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:50:18,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:50:18,975 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-20 02:50:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:19,103 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-20 02:50:19,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:50:19,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 02:50:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:19,105 INFO L225 Difference]: With dead ends: 68 [2019-11-20 02:50:19,105 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 02:50:19,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:50:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 02:50:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-20 02:50:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:50:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 02:50:19,113 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 02:50:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:19,114 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 02:50:19,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:50:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 02:50:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:50:19,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:19,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:19,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 02:50:19,338 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:19,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 02:50:19,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:19,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535836687] [2019-11-20 02:50:19,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:19,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 02:50:19,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:19,476 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:19,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535836687] [2019-11-20 02:50:19,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:19,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:50:19,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301910648] [2019-11-20 02:50:19,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:50:19,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:19,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:50:19,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:50:19,511 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-20 02:50:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:19,614 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-20 02:50:19,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:50:19,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-20 02:50:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:19,616 INFO L225 Difference]: With dead ends: 52 [2019-11-20 02:50:19,616 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 02:50:19,617 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 [2019-11-20 02:50:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 02:50:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 02:50:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 02:50:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-20 02:50:19,622 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-20 02:50:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:19,622 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-20 02:50:19,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:50:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-20 02:50:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 02:50:19,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:19,624 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:19,843 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 02:50:19,844 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-20 02:50:19,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:19,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617011144] [2019-11-20 02:50:19,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:19,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:50:19,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:19,982 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:20,000 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617011144] [2019-11-20 02:50:20,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:20,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:50:20,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338503006] [2019-11-20 02:50:20,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:50:20,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:20,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:50:20,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:50:20,002 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-20 02:50:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:20,098 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-20 02:50:20,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:50:20,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 02:50:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:20,100 INFO L225 Difference]: With dead ends: 65 [2019-11-20 02:50:20,100 INFO L226 Difference]: Without dead ends: 56 [2019-11-20 02:50:20,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:50:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-20 02:50:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-20 02:50:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 02:50:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-20 02:50:20,107 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-20 02:50:20,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:20,107 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-20 02:50:20,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:50:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-20 02:50:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 02:50:20,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:20,108 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:20,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 02:50:20,330 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-20 02:50:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:20,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684531401] [2019-11-20 02:50:20,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:20,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 02:50:20,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:20,491 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:20,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684531401] [2019-11-20 02:50:20,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:20,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 02:50:20,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819542302] [2019-11-20 02:50:20,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:50:20,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:20,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:50:20,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:50:20,532 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-20 02:50:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:20,548 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-20 02:50:20,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 02:50:20,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 02:50:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:20,550 INFO L225 Difference]: With dead ends: 40 [2019-11-20 02:50:20,550 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 02:50:20,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:50:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 02:50:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-20 02:50:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 02:50:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-20 02:50:20,555 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-20 02:50:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:20,555 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-20 02:50:20,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:50:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-20 02:50:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 02:50:20,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:20,556 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:20,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-20 02:50:20,757 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:20,758 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-20 02:50:20,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:20,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803481153] [2019-11-20 02:50:20,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:20,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 02:50:20,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:20,919 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:20,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:50:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:20,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803481153] [2019-11-20 02:50:20,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:20,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-20 02:50:20,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872597759] [2019-11-20 02:50:20,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 02:50:20,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:20,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 02:50:20,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 02:50:20,992 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-20 02:50:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:21,155 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-20 02:50:21,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 02:50:21,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-20 02:50:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:21,157 INFO L225 Difference]: With dead ends: 42 [2019-11-20 02:50:21,157 INFO L226 Difference]: Without dead ends: 39 [2019-11-20 02:50:21,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-20 02:50:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-20 02:50:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-20 02:50:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 02:50:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-20 02:50:21,166 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-20 02:50:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:21,167 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-20 02:50:21,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 02:50:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-20 02:50:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 02:50:21,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:21,168 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:21,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-20 02:50:21,369 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-20 02:50:21,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:21,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124218849] [2019-11-20 02:50:21,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:50:21,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 02:50:21,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:50:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:21,519 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:50:21,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:50:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:50:21,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124218849] [2019-11-20 02:50:21,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:50:21,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 02:50:21,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866649988] [2019-11-20 02:50:21,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 02:50:21,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:50:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 02:50:21,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:50:21,645 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-20 02:50:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:50:21,813 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-20 02:50:21,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:50:21,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-20 02:50:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:50:21,817 INFO L225 Difference]: With dead ends: 45 [2019-11-20 02:50:21,817 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 02:50:21,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-20 02:50:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 02:50:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-20 02:50:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 02:50:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-20 02:50:21,822 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-20 02:50:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:50:21,823 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-20 02:50:21,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 02:50:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-20 02:50:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 02:50:21,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:50:21,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:50:22,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-20 02:50:22,025 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:50:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:50:22,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-20 02:50:22,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:50:22,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146512018] [2019-11-20 02:50:22,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-20 02:50:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:50:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:50:22,411 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 02:50:22,411 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:50:22,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-20 02:50:22,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:50:22 BoogieIcfgContainer [2019-11-20 02:50:22,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:50:22,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:50:22,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:50:22,645 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:50:22,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:50:18" (3/4) ... [2019-11-20 02:50:22,647 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 02:50:22,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_390a78d1-f009-475c-a0c1-cae1eb02ed8a/bin/uautomizer/witness.graphml [2019-11-20 02:50:22,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:50:22,697 INFO L168 Benchmark]: Toolchain (without parser) took 5383.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 961.8 MB in the beginning and 861.0 MB in the end (delta: 100.8 MB). Peak memory consumption was 218.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:22,697 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:50:22,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.50 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 945.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:22,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:22,699 INFO L168 Benchmark]: Boogie Preprocessor took 40.76 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. [2019-11-20 02:50:22,699 INFO L168 Benchmark]: RCFGBuilder took 555.94 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:22,700 INFO L168 Benchmark]: TraceAbstraction took 4288.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 867.6 MB in the end (delta: 213.9 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:22,700 INFO L168 Benchmark]: Witness Printer took 50.62 ms. Allocated memory is still 1.1 GB. Free memory was 867.6 MB in the beginning and 861.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:50:22,702 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.50 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 945.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 108.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.76 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 555.94 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4288.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 867.6 MB in the end (delta: 213.9 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. * Witness Printer took 50.62 ms. Allocated memory is still 1.1 GB. Free memory was 867.6 MB in the beginning and 861.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 381 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...