./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ......................................................................................................................................................................................................................................................................................... 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_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 11:10:22,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:10:22,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:10:22,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:10:22,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:10:22,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:10:22,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:10:22,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:10:22,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:10:22,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:10:22,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:10:22,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:10:22,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:10:22,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:10:22,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:10:22,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:10:22,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:10:22,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:10:22,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:10:22,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:10:22,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:10:22,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:10:22,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:10:22,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:10:22,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:10:22,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:10:22,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:10:22,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:10:22,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:10:22,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:10:22,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:10:22,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:10:22,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:10:22,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:10:22,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:10:22,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:10:22,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:10:22,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:10:22,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:10:22,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:10:22,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:10:22,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 11:10:22,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:10:22,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:10:22,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:10:22,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:10:22,291 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:10:22,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:10:22,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:10:22,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:10:22,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:10:22,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:10:22,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:10:22,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:10:22,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:10:22,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:10:22,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:10:22,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:10:22,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:10:22,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:10:22,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:10:22,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:10:22,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:10:22,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:10:22,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:10:22,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:10:22,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:10:22,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:10:22,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:10:22,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:10:22,296 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_1a2b427f-c899-4949-8583-e2c6569b558b/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-20 11:10:22,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:10:22,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:10:22,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:10:22,462 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:10:22,463 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:10:22,463 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-20 11:10:22,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/41ea928a5/160f2f51291745d084b233c08ef060b0/FLAG004ad1b0a [2019-11-20 11:10:22,965 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:10:22,966 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-20 11:10:22,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/41ea928a5/160f2f51291745d084b233c08ef060b0/FLAG004ad1b0a [2019-11-20 11:10:23,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/41ea928a5/160f2f51291745d084b233c08ef060b0 [2019-11-20 11:10:23,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:10:23,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:10:23,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:10:23,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:10:23,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:10:23,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a559681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23, skipping insertion in model container [2019-11-20 11:10:23,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,382 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:10:23,402 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:10:23,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:10:23,641 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:10:23,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:10:23,693 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:10:23,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23 WrapperNode [2019-11-20 11:10:23,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:10:23,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:10:23,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:10:23,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:10:23,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:10:23,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:10:23,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:10:23,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:10:23,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... [2019-11-20 11:10:23,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:10:23,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:10:23,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:10:23,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:10:23,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 11:10:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-20 11:10:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 11:10:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 11:10:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:10:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:10:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 11:10:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:10:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:10:24,232 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:10:24,232 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-20 11:10:24,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:24 BoogieIcfgContainer [2019-11-20 11:10:24,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:10:24,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:10:24,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:10:24,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:10:24,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:10:23" (1/3) ... [2019-11-20 11:10:24,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9b9782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:24, skipping insertion in model container [2019-11-20 11:10:24,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:23" (2/3) ... [2019-11-20 11:10:24,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9b9782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:24, skipping insertion in model container [2019-11-20 11:10:24,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:24" (3/3) ... [2019-11-20 11:10:24,247 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-20 11:10:24,258 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:10:24,266 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:10:24,276 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:10:24,307 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:10:24,307 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:10:24,307 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:10:24,307 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:10:24,307 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:10:24,307 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:10:24,308 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:10:24,308 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:10:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-20 11:10:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 11:10:24,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:10:24,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:10:24,337 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:10:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:10:24,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-20 11:10:24,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:10:24,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980997149] [2019-11-20 11:10:24,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:10:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:10:24,481 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 11:10:24,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980997149] [2019-11-20 11:10:24,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:10:24,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 11:10:24,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409234390] [2019-11-20 11:10:24,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 11:10:24,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:10:24,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 11:10:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 11:10:24,506 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-20 11:10:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:10:24,533 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-20 11:10:24,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 11:10:24,534 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-20 11:10:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:10:24,546 INFO L225 Difference]: With dead ends: 74 [2019-11-20 11:10:24,547 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 11:10:24,551 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 11:10:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 11:10:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-20 11:10:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 11:10:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-20 11:10:24,592 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-20 11:10:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:10:24,592 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-20 11:10:24,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 11:10:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-20 11:10:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 11:10:24,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:10:24,594 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:10:24,594 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:10:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:10:24,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-20 11:10:24,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:10:24,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637567889] [2019-11-20 11:10:24,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:10:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:10:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:10:24,683 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:10:24,683 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:10:24,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:10:24 BoogieIcfgContainer [2019-11-20 11:10:24,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:10:24,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:10:24,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:10:24,711 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:10:24,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:24" (3/4) ... [2019-11-20 11:10:24,715 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:10:24,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:10:24,717 INFO L168 Benchmark]: Toolchain (without parser) took 1355.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -101.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:24,718 INFO L168 Benchmark]: CDTParser took 0.19 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 11:10:24,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:24,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.68 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 11:10:24,720 INFO L168 Benchmark]: Boogie Preprocessor took 31.40 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:24,720 INFO L168 Benchmark]: RCFGBuilder took 464.57 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:24,721 INFO L168 Benchmark]: TraceAbstraction took 475.18 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: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:24,721 INFO L168 Benchmark]: Witness Printer took 4.66 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 11:10:24,725 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.68 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. * Boogie Preprocessor took 31.40 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 464.57 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 475.18 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: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.66 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 11:10:26,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:10:26,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:10:26,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:10:26,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:10:26,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:10:26,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:10:26,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:10:26,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:10:26,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:10:26,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:10:26,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:10:26,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:10:26,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:10:26,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:10:26,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:10:26,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:10:26,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:10:26,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:10:26,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:10:26,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:10:26,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:10:26,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:10:26,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:10:26,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:10:26,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:10:26,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:10:26,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:10:26,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:10:26,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:10:26,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:10:26,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:10:26,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:10:26,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:10:26,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:10:26,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:10:26,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:10:26,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:10:26,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:10:26,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:10:26,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:10:26,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 11:10:26,813 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:10:26,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:10:26,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:10:26,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:10:26,816 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:10:26,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:10:26,816 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:10:26,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:10:26,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:10:26,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:10:26,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:10:26,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:10:26,818 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:10:26,818 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:10:26,818 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:10:26,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:10:26,819 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:10:26,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:10:26,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:10:26,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:10:26,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:10:26,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:10:26,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:10:26,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:10:26,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:10:26,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:10:26,822 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:10:26,822 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:10:26,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:10:26,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:10:26,823 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_1a2b427f-c899-4949-8583-e2c6569b558b/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-20 11:10:27,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:10:27,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:10:27,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:10:27,118 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:10:27,119 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:10:27,120 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-20 11:10:27,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/2383a987c/c84411cddfb74973bb273a5b8b7a2a55/FLAGdfa83d421 [2019-11-20 11:10:27,641 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:10:27,641 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-20 11:10:27,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/2383a987c/c84411cddfb74973bb273a5b8b7a2a55/FLAGdfa83d421 [2019-11-20 11:10:28,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/data/2383a987c/c84411cddfb74973bb273a5b8b7a2a55 [2019-11-20 11:10:28,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:10:28,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:10:28,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:10:28,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:10:28,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:10:28,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6e2d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28, skipping insertion in model container [2019-11-20 11:10:28,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,067 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:10:28,092 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:10:28,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:10:28,265 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:10:28,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:10:28,385 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:10:28,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28 WrapperNode [2019-11-20 11:10:28,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:10:28,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:10:28,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:10:28,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:10:28,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:10:28,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:10:28,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:10:28,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:10:28,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2019-11-20 11:10:28,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:10:28,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:10:28,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:10:28,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:10:28,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 11:10:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-20 11:10:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 11:10:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-20 11:10:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:10:28,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:10:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:10:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 11:10:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:10:29,815 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:10:29,816 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-20 11:10:29,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:29 BoogieIcfgContainer [2019-11-20 11:10:29,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:10:29,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:10:29,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:10:29,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:10:29,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:10:28" (1/3) ... [2019-11-20 11:10:29,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a402fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:29, skipping insertion in model container [2019-11-20 11:10:29,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (2/3) ... [2019-11-20 11:10:29,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a402fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:29, skipping insertion in model container [2019-11-20 11:10:29,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:29" (3/3) ... [2019-11-20 11:10:29,825 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-20 11:10:29,835 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:10:29,842 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:10:29,853 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:10:29,876 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:10:29,876 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:10:29,876 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:10:29,877 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:10:29,877 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:10:29,877 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:10:29,877 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:10:29,877 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:10:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-20 11:10:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 11:10:29,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:10:29,897 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:10:29,898 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:10:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:10:29,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-20 11:10:29,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:10:29,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212266148] [2019-11-20 11:10:29,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 11:10:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:10:30,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 11:10:30,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:10:30,021 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 11:10:30,022 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:10:30,028 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 11:10:30,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212266148] [2019-11-20 11:10:30,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:10:30,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 11:10:30,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884699113] [2019-11-20 11:10:30,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 11:10:30,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:10:30,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 11:10:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 11:10:30,053 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-20 11:10:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:10:30,081 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-20 11:10:30,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 11:10:30,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-20 11:10:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:10:30,101 INFO L225 Difference]: With dead ends: 74 [2019-11-20 11:10:30,102 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 11:10:30,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 11:10:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 11:10:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-20 11:10:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 11:10:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-20 11:10:30,141 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-20 11:10:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:10:30,142 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-20 11:10:30,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 11:10:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-20 11:10:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 11:10:30,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:10:30,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:10:30,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 11:10:30,359 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:10:30,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:10:30,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-20 11:10:30,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:10:30,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017254300] [2019-11-20 11:10:30,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 11:10:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:10:30,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 11:10:30,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:10:30,580 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 11:10:30,581 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:10:30,668 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 11:10:30,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017254300] [2019-11-20 11:10:30,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:10:30,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 11:10:30,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689932899] [2019-11-20 11:10:30,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 11:10:30,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:10:30,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 11:10:30,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 11:10:30,672 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2019-11-20 11:10:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:10:31,019 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-11-20 11:10:31,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 11:10:31,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-20 11:10:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:10:31,021 INFO L225 Difference]: With dead ends: 59 [2019-11-20 11:10:31,021 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 11:10:31,023 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 11:10:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 11:10:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2019-11-20 11:10:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 11:10:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-20 11:10:31,032 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2019-11-20 11:10:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:10:31,033 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-20 11:10:31,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 11:10:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-20 11:10:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 11:10:31,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:10:31,036 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:10:31,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 11:10:31,247 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:10:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:10:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2019-11-20 11:10:31,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:10:31,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928620684] [2019-11-20 11:10:31,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 11:10:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:10:31,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:10:31,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:10:31,475 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 11:10:31,475 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:10:32,089 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-20 11:10:32,324 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 11:10:32,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928620684] [2019-11-20 11:10:32,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:10:32,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 11:10:32,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482977998] [2019-11-20 11:10:32,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 11:10:32,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:10:32,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 11:10:32,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 11:10:32,327 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-11-20 11:10:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:10:32,899 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-20 11:10:32,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 11:10:32,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-20 11:10:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:10:32,909 INFO L225 Difference]: With dead ends: 34 [2019-11-20 11:10:32,909 INFO L226 Difference]: Without dead ends: 22 [2019-11-20 11:10:32,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 11:10:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-20 11:10:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-20 11:10:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 11:10:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-20 11:10:32,915 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2019-11-20 11:10:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:10:32,916 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-20 11:10:32,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 11:10:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-20 11:10:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 11:10:32,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:10:32,917 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:10:33,131 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 11:10:33,131 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:10:33,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:10:33,132 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2019-11-20 11:10:33,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:10:33,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244815147] [2019-11-20 11:10:33,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/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 11:10:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:10:33,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 11:10:33,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:10:33,338 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2019-11-20 11:10:33,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:10:33,373 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2019-11-20 11:10:33,375 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,407 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,426 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2019-11-20 11:10:33,427 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,445 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,452 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,452 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2019-11-20 11:10:33,454 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,472 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 11:10:33,496 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:72, output treesize:29 [2019-11-20 11:10:33,554 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 11:10:33,554 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:10:33,638 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,639 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 54 [2019-11-20 11:10:33,661 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-20 11:10:33,662 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,682 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,690 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,691 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2019-11-20 11:10:33,691 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,695 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,695 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:10:33,714 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:10:33,715 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 11:10:33,715 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:68, output treesize:26 [2019-11-20 11:10:33,737 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 11:10:33,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244815147] [2019-11-20 11:10:33,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:10:33,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2019-11-20 11:10:33,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808412689] [2019-11-20 11:10:33,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 11:10:33,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:10:33,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:10:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:10:33,739 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2019-11-20 11:10:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:10:33,741 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-20 11:10:33,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 11:10:33,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 11:10:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:10:33,741 INFO L225 Difference]: With dead ends: 22 [2019-11-20 11:10:33,741 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 11:10:33,742 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:10:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 11:10:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 11:10:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 11:10:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 11:10:33,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-20 11:10:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:10:33,743 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:10:33,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 11:10:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 11:10:33,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 11:10:33,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 11:10:33,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 11:10:33,993 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2019-11-20 11:10:33,994 INFO L444 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2019-11-20 11:10:33,994 INFO L440 ceAbstractionStarter]: At program point L19-2(lines 19 24) the Hoare annotation is: false [2019-11-20 11:10:33,994 INFO L444 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2019-11-20 11:10:33,994 INFO L444 ceAbstractionStarter]: For program point L102(line 102) no Hoare annotation was computed. [2019-11-20 11:10:33,994 INFO L444 ceAbstractionStarter]: For program point L102-2(lines 102 105) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 35) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 75) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point L70-1(lines 16 77) no Hoare annotation was computed. [2019-11-20 11:10:33,995 INFO L444 ceAbstractionStarter]: For program point L70-2(lines 70 75) no Hoare annotation was computed. [2019-11-20 11:10:33,996 INFO L444 ceAbstractionStarter]: For program point L62(lines 62 63) no Hoare annotation was computed. [2019-11-20 11:10:33,996 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 34) no Hoare annotation was computed. [2019-11-20 11:10:33,996 INFO L444 ceAbstractionStarter]: For program point L62-2(lines 62 63) no Hoare annotation was computed. [2019-11-20 11:10:33,996 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 55) no Hoare annotation was computed. [2019-11-20 11:10:33,996 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-20 11:10:33,996 INFO L440 ceAbstractionStarter]: At program point L88(lines 79 89) the Hoare annotation is: false [2019-11-20 11:10:33,996 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 69) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 34) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 68) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L48(lines 48 51) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L40(lines 40 45) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L57(lines 57 66) no Hoare annotation was computed. [2019-11-20 11:10:33,997 INFO L444 ceAbstractionStarter]: For program point L57-1(lines 57 66) no Hoare annotation was computed. [2019-11-20 11:10:33,998 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2019-11-20 11:10:33,998 INFO L444 ceAbstractionStarter]: For program point L82-1(lines 82 86) no Hoare annotation was computed. [2019-11-20 11:10:33,998 INFO L440 ceAbstractionStarter]: At program point L82-2(lines 82 86) the Hoare annotation is: false [2019-11-20 11:10:33,998 INFO L444 ceAbstractionStarter]: For program point L82-3(lines 82 86) no Hoare annotation was computed. [2019-11-20 11:10:33,998 INFO L447 ceAbstractionStarter]: At program point L107(lines 91 108) the Hoare annotation is: true [2019-11-20 11:10:33,998 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 42) no Hoare annotation was computed. [2019-11-20 11:10:33,998 INFO L444 ceAbstractionStarter]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2019-11-20 11:10:33,998 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 11:10:33,999 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 65) no Hoare annotation was computed. [2019-11-20 11:10:33,999 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 69) no Hoare annotation was computed. [2019-11-20 11:10:33,999 INFO L440 ceAbstractionStarter]: At program point L76(lines 16 77) the Hoare annotation is: false [2019-11-20 11:10:34,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:10:34 BoogieIcfgContainer [2019-11-20 11:10:34,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:10:34,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:10:34,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:10:34,007 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:10:34,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:29" (3/4) ... [2019-11-20 11:10:34,011 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 11:10:34,024 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-11-20 11:10:34,025 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-20 11:10:34,025 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 11:10:34,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1a2b427f-c899-4949-8583-e2c6569b558b/bin/uautomizer/witness.graphml [2019-11-20 11:10:34,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:10:34,112 INFO L168 Benchmark]: Toolchain (without parser) took 6064.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 961.8 MB in the beginning and 983.0 MB in the end (delta: -21.2 MB). Peak memory consumption was 142.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:34,113 INFO L168 Benchmark]: CDTParser took 0.30 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 11:10:34,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -192.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:34,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:34,114 INFO L168 Benchmark]: Boogie Preprocessor took 48.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:10:34,115 INFO L168 Benchmark]: RCFGBuilder took 1320.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:34,115 INFO L168 Benchmark]: TraceAbstraction took 4188.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.5 MB in the end (delta: 131.9 MB). Peak memory consumption was 131.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:34,115 INFO L168 Benchmark]: Witness Printer took 104.21 ms. Allocated memory is still 1.2 GB. Free memory was 989.5 MB in the beginning and 983.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 11:10:34,118 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -192.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1320.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4188.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.5 MB in the end (delta: 131.9 MB). Peak memory consumption was 131.9 MB. Max. memory is 11.5 GB. * Witness Printer took 104.21 ms. Allocated memory is still 1.2 GB. Free memory was 989.5 MB in the beginning and 983.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: SAFE, OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 123 SDslu, 47 SDs, 0 SdLazy, 27 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 12 QuantifiedInterpolants, 7906 SizeOfPredicates, 14 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 correct! Received shutdown request...