./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 ........................................................................................................................................................................................................................................................................................... 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_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:10:51,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:10:51,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:10:51,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:10:51,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:10:51,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:10:51,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:10:51,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:10:51,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:10:51,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:10:51,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:10:51,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:10:51,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:10:51,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:10:51,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:10:51,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:10:51,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:10:51,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:10:51,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:10:51,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:10:51,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:10:51,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:10:51,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:10:51,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:10:51,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:10:51,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:10:51,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:10:51,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:10:51,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:10:51,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:10:51,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:10:51,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:10:51,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:10:51,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:10:51,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:10:51,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:10:51,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:10:51,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:10:51,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:10:51,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:10:51,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:10:51,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:10:51,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:10:51,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:10:51,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:10:51,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:10:51,462 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:10:51,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:10:51,463 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:10:51,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:10:51,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:10:51,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:10:51,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:10:51,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:10:51,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:10:51,465 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:10:51,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:10:51,465 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:10:51,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:10:51,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:10:51,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:10:51,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:10:51,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:10:51,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:10:51,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:10:51,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:10:51,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:10:51,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:10:51,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:10:51,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:10:51,469 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_19426a40-aa7f-4437-9213-9ed446c3dabb/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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2019-11-15 21:10:51,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:10:51,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:10:51,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:10:51,545 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:10:51,546 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:10:51,548 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-15 21:10:51,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/fb9167086/ec4ec5506a83491d8adbf7e30b18130e/FLAG4778334b2 [2019-11-15 21:10:52,175 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:10:52,175 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-15 21:10:52,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/fb9167086/ec4ec5506a83491d8adbf7e30b18130e/FLAG4778334b2 [2019-11-15 21:10:52,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/fb9167086/ec4ec5506a83491d8adbf7e30b18130e [2019-11-15 21:10:52,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:10:52,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:10:52,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:10:52,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:10:52,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:10:52,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:10:52" (1/1) ... [2019-11-15 21:10:52,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0978b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:52, skipping insertion in model container [2019-11-15 21:10:52,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:10:52" (1/1) ... [2019-11-15 21:10:52,517 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:10:52,558 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:10:52,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:10:52,963 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:10:53,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:10:53,056 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:10:53,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53 WrapperNode [2019-11-15 21:10:53,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:10:53,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:10:53,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:10:53,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:10:53,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:10:53,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:10:53,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:10:53,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:10:53,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... [2019-11-15 21:10:53,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:10:53,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:10:53,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:10:53,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:10:53,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 [2019-11-15 21:10:53,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:10:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 21:10:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:10:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 21:10:53,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:10:53,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:10:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:10:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:10:53,718 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:10:53,719 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 21:10:53,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:10:53 BoogieIcfgContainer [2019-11-15 21:10:53,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:10:53,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:10:53,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:10:53,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:10:53,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:10:52" (1/3) ... [2019-11-15 21:10:53,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc85227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:10:53, skipping insertion in model container [2019-11-15 21:10:53,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:53" (2/3) ... [2019-11-15 21:10:53,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc85227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:10:53, skipping insertion in model container [2019-11-15 21:10:53,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:10:53" (3/3) ... [2019-11-15 21:10:53,730 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-11-15 21:10:53,742 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:10:53,749 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:10:53,760 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:10:53,785 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:10:53,786 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:10:53,786 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:10:53,787 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:10:53,787 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:10:53,787 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:10:53,787 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:10:53,787 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:10:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-15 21:10:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 21:10:53,809 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:10:53,809 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:10:53,811 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:10:53,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:10:53,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2019-11-15 21:10:53,827 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:10:53,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363226910] [2019-11-15 21:10:53,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:10:53,828 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:10:53,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:10:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:10:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:10:53,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363226910] [2019-11-15 21:10:53,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:10:53,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:10:53,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024705042] [2019-11-15 21:10:53,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:10:53,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:10:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:10:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:10:54,005 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-15 21:10:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:10:54,029 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2019-11-15 21:10:54,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:10:54,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-15 21:10:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:10:54,043 INFO L225 Difference]: With dead ends: 66 [2019-11-15 21:10:54,043 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 21:10:54,046 INFO L600 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 [2019-11-15 21:10:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 21:10:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-15 21:10:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:10:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 21:10:54,090 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2019-11-15 21:10:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:10:54,091 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 21:10:54,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:10:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 21:10:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:10:54,092 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:10:54,092 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:10:54,092 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:10:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:10:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2019-11-15 21:10:54,093 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:10:54,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512985492] [2019-11-15 21:10:54,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:10:54,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:10:54,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:10:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:10:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:10:54,191 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:10:54,191 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:10:54,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:10:54 BoogieIcfgContainer [2019-11-15 21:10:54,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:10:54,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:10:54,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:10:54,234 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:10:54,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:10:53" (3/4) ... [2019-11-15 21:10:54,239 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:10:54,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:10:54,242 INFO L168 Benchmark]: Toolchain (without parser) took 1748.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:10:54,242 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:10:54,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 560.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:10:54,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:10:54,245 INFO L168 Benchmark]: Boogie Preprocessor took 66.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:10:54,246 INFO L168 Benchmark]: RCFGBuilder took 523.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:10:54,246 INFO L168 Benchmark]: TraceAbstraction took 511.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:10:54,247 INFO L168 Benchmark]: Witness Printer took 5.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:10:54,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 560.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 523.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 511.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 120, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L12-L16] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L18] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L116] float x = 1.0f; [L21] float hfsq, f, s, z, R, w, t1, t2, dk; [L22] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L30] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L31] COND TRUE ((ix & 0x7fffffff) == 0) [L32] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L117] float res = __ieee754_logf(x); [L120] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L120] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L121] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 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=34occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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-cad4683 [2019-11-15 21:10:56,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:10:56,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:10:56,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-15 21:10:57,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:10:57,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:10:57,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:10:57,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:10:57,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:10:57,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:10:57,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:10:57,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:10:57,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:10:57,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:10:57,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:10:57,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:10:57,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:10:57,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:10:57,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:10:57,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:10:57,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:10:57,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:10:57,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:10:57,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:10:57,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:10:57,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:10:57,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:10:57,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:10:57,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:10:57,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:10:57,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:10:57,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:10:57,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:10:57,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:10:57,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:10:57,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:10:57,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:10:57,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:10:57,060 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:10:57,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:10:57,061 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:10:57,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:10:57,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:10:57,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:10:57,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:10:57,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:10:57,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:10:57,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:10:57,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:10:57,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:10:57,064 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:10:57,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:10:57,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:10:57,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:10:57,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:10:57,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:10:57,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:10:57,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:10:57,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:10:57,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:10:57,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:10:57,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:10:57,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:10:57,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:10:57,068 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_19426a40-aa7f-4437-9213-9ed446c3dabb/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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2019-11-15 21:10:57,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:10:57,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:10:57,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:10:57,125 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:10:57,128 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:10:57,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-15 21:10:57,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/23c34027f/ff9d62de4e59464d99737f7ffbbe3035/FLAG7e664b11c [2019-11-15 21:10:57,711 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:10:57,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-15 21:10:57,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/23c34027f/ff9d62de4e59464d99737f7ffbbe3035/FLAG7e664b11c [2019-11-15 21:10:58,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/data/23c34027f/ff9d62de4e59464d99737f7ffbbe3035 [2019-11-15 21:10:58,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:10:58,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:10:58,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:10:58,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:10:58,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:10:58,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6a860f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58, skipping insertion in model container [2019-11-15 21:10:58,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,070 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:10:58,106 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:10:58,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:10:58,459 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:10:58,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:10:58,614 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:10:58,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58 WrapperNode [2019-11-15 21:10:58,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:10:58,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:10:58,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:10:58,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:10:58,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:10:58,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:10:58,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:10:58,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:10:58,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... [2019-11-15 21:10:58,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:10:58,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:10:58,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:10:58,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:10:58,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 [2019-11-15 21:10:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:10:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-15 21:10:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 21:10:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:10:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:10:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-15 21:10:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 21:10:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:11:10,287 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:11:10,287 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 21:11:10,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:11:10 BoogieIcfgContainer [2019-11-15 21:11:10,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:11:10,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:11:10,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:11:10,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:11:10,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:10:58" (1/3) ... [2019-11-15 21:11:10,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eed9383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:11:10, skipping insertion in model container [2019-11-15 21:11:10,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:10:58" (2/3) ... [2019-11-15 21:11:10,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eed9383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:11:10, skipping insertion in model container [2019-11-15 21:11:10,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:11:10" (3/3) ... [2019-11-15 21:11:10,297 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-11-15 21:11:10,306 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:11:10,314 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:11:10,326 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:11:10,350 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:11:10,351 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:11:10,351 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:11:10,351 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:11:10,351 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:11:10,351 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:11:10,352 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:11:10,352 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:11:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-15 21:11:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 21:11:10,375 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:11:10,376 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:11:10,379 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:11:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:11:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2019-11-15 21:11:10,394 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:11:10,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142582211] [2019-11-15 21:11:10,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 [2019-11-15 21:11:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:11:10,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 21:11:10,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:11:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:10,799 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:11:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:10,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142582211] [2019-11-15 21:11:10,804 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:11:10,805 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 21:11:10,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087706116] [2019-11-15 21:11:10,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:11:10,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:11:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:11:10,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:11:10,825 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-15 21:11:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:11:10,867 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2019-11-15 21:11:10,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:11:10,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-15 21:11:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:11:10,887 INFO L225 Difference]: With dead ends: 66 [2019-11-15 21:11:10,887 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 21:11:10,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:11:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 21:11:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-15 21:11:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:11:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 21:11:10,939 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2019-11-15 21:11:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:11:10,940 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 21:11:10,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:11:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 21:11:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:11:10,941 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:11:10,942 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:11:11,145 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 21:11:11,145 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:11:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:11:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2019-11-15 21:11:11,146 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:11:11,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539383312] [2019-11-15 21:11:11,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 [2019-11-15 21:11:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:11:11,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 21:11:11,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:11:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:11,554 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:11:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:11,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539383312] [2019-11-15 21:11:11,647 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:11:11,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 21:11:11,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598740735] [2019-11-15 21:11:11,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:11:11,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:11:11,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:11:11,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:11:11,651 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-15 21:11:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:11:14,474 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2019-11-15 21:11:14,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:11:14,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-15 21:11:14,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:11:14,631 INFO L225 Difference]: With dead ends: 60 [2019-11-15 21:11:14,631 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 21:11:14,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:11:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 21:11:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-11-15 21:11:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 21:11:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-11-15 21:11:14,640 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2019-11-15 21:11:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:11:14,640 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-11-15 21:11:14,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:11:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-11-15 21:11:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:11:14,642 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:11:14,643 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:11:14,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 21:11:14,858 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:11:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:11:14,859 INFO L82 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2019-11-15 21:11:14,860 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:11:14,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939353919] [2019-11-15 21:11:14,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 [2019-11-15 21:11:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:11:15,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:11:15,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:11:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:15,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:11:15,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:11:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:15,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939353919] [2019-11-15 21:11:15,163 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:11:15,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 21:11:15,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304131185] [2019-11-15 21:11:15,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:11:15,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:11:15,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:11:15,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:11:15,169 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 7 states. [2019-11-15 21:11:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:11:27,418 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-11-15 21:11:27,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:11:27,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-15 21:11:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:11:27,421 INFO L225 Difference]: With dead ends: 41 [2019-11-15 21:11:27,421 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 21:11:27,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:11:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 21:11:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-11-15 21:11:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:11:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-15 21:11:27,439 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2019-11-15 21:11:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:11:27,441 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-15 21:11:27,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:11:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-11-15 21:11:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:11:27,444 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:11:27,445 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:11:27,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 21:11:27,658 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:11:27,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:11:27,659 INFO L82 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2019-11-15 21:11:27,660 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:11:27,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713570921] [2019-11-15 21:11:27,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/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 [2019-11-15 21:11:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:11:28,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 21:11:28,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:11:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:28,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:11:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:28,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713570921] [2019-11-15 21:11:28,545 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:11:28,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-15 21:11:28,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458307089] [2019-11-15 21:11:28,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 21:11:28,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:11:28,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 21:11:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:11:28,548 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 12 states. [2019-11-15 21:11:46,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:11:46,002 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2019-11-15 21:11:46,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 21:11:46,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-11-15 21:11:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:11:46,035 INFO L225 Difference]: With dead ends: 58 [2019-11-15 21:11:46,035 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 21:11:46,036 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:11:46,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 21:11:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2019-11-15 21:11:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:11:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-15 21:11:46,045 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2019-11-15 21:11:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:11:46,046 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-15 21:11:46,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 21:11:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-15 21:11:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:11:46,047 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:11:46,047 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:11:46,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 21:11:46,250 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:11:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:11:46,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2019-11-15 21:11:46,251 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:11:46,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298353344] [2019-11-15 21:11:46,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19426a40-aa7f-4437-9213-9ed446c3dabb/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-15 21:11:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:11:46,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 21:11:46,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:11:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:11:46,784 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:11:47,407 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-11-15 21:11:48,397 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-15 21:11:49,639 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-15 21:12:27,350 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-11-15 21:13:11,345 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-15 21:13:11,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 21:13:11,547 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:580) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 42 more [2019-11-15 21:13:11,554 INFO L168 Benchmark]: Toolchain (without parser) took 133503.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 951.0 MB in the beginning and 934.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 168.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:11,554 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:11,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:11,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:11,557 INFO L168 Benchmark]: Boogie Preprocessor took 47.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:11,557 INFO L168 Benchmark]: RCFGBuilder took 11564.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:11,558 INFO L168 Benchmark]: TraceAbstraction took 121261.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 173.8 MB). Peak memory consumption was 173.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:11,563 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 563.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 11564.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 121261.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 173.8 MB). Peak memory consumption was 173.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...