./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/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_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/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 0.1.24-678e011 [2019-11-20 01:54:29,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:54:29,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:54:29,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:54:29,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:54:29,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:54:29,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:54:29,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:54:29,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:54:29,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:54:29,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:54:29,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:54:29,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:54:29,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:54:29,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:54:29,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:54:29,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:54:29,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:54:29,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:54:29,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:54:29,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:54:29,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:54:29,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:54:29,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:54:29,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:54:29,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:54:29,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:54:29,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:54:29,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:54:29,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:54:29,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:54:29,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:54:29,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:54:29,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:54:29,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:54:29,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:54:29,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:54:29,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:54:29,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:54:29,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:54:29,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:54:29,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 01:54:29,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:54:29,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:54:29,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:54:29,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:54:29,727 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:54:29,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:54:29,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:54:29,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:54:29,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:54:29,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:54:29,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 01:54:29,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:54:29,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 01:54:29,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:54:29,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:54:29,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:54:29,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 01:54:29,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:54:29,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:54:29,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:54:29,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:54:29,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:54:29,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:54:29,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:54:29,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 01:54:29,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:54:29,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 01:54:29,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 01:54:29,732 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_04426e29-7cba-465d-9adf-f9d1f0ff961c/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 [2019-11-20 01:54:29,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:54:29,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:54:29,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:54:29,882 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:54:29,882 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:54:29,883 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-20 01:54:29,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/fb9ebe014/b2afb1331b294a44822158631b8d6495/FLAG4188a20f5 [2019-11-20 01:54:30,314 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:54:30,314 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-20 01:54:30,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/fb9ebe014/b2afb1331b294a44822158631b8d6495/FLAG4188a20f5 [2019-11-20 01:54:30,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/fb9ebe014/b2afb1331b294a44822158631b8d6495 [2019-11-20 01:54:30,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:54:30,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:54:30,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:54:30,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:54:30,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:54:30,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332ee523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30, skipping insertion in model container [2019-11-20 01:54:30,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,352 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:54:30,374 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:54:30,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:54:30,636 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:54:30,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:54:30,721 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:54:30,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30 WrapperNode [2019-11-20 01:54:30,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:54:30,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:54:30,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:54:30,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:54:30,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:54:30,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:54:30,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:54:30,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:54:30,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... [2019-11-20 01:54:30,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:54:30,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:54:30,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:54:30,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:54:30,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:54:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:54:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-20 01:54:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 01:54:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 01:54:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:54:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:54:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 01:54:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:54:31,312 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:54:31,312 INFO L285 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-20 01:54:31,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:54:31 BoogieIcfgContainer [2019-11-20 01:54:31,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:54:31,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:54:31,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:54:31,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:54:31,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:54:30" (1/3) ... [2019-11-20 01:54:31,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc814d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:54:31, skipping insertion in model container [2019-11-20 01:54:31,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:30" (2/3) ... [2019-11-20 01:54:31,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc814d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:54:31, skipping insertion in model container [2019-11-20 01:54:31,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:54:31" (3/3) ... [2019-11-20 01:54:31,321 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-11-20 01:54:31,329 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:54:31,336 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 01:54:31,346 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 01:54:31,368 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:54:31,368 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 01:54:31,368 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:54:31,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:54:31,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:54:31,369 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:54:31,369 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:54:31,369 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:54:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-20 01:54:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 01:54:31,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:54:31,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:54:31,390 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:54:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:54:31,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2019-11-20 01:54:31,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:54:31,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685705723] [2019-11-20 01:54:31,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:54:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:54:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:31,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685705723] [2019-11-20 01:54:31,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:54:31,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 01:54:31,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596679620] [2019-11-20 01:54:31,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 01:54:31,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:54:31,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 01:54:31,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 01:54:31,541 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-20 01:54:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:54:31,559 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2019-11-20 01:54:31,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 01:54:31,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-20 01:54:31,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:54:31,570 INFO L225 Difference]: With dead ends: 66 [2019-11-20 01:54:31,570 INFO L226 Difference]: Without dead ends: 31 [2019-11-20 01:54:31,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 01:54:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-20 01:54:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-20 01:54:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 01:54:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 01:54:31,605 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2019-11-20 01:54:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:54:31,606 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 01:54:31,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 01:54:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 01:54:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 01:54:31,606 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:54:31,607 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:54:31,607 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:54:31,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:54:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2019-11-20 01:54:31,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:54:31,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684171399] [2019-11-20 01:54:31,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:54:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:54:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:54:31,712 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:54:31,712 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 01:54:31,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 01:54:31 BoogieIcfgContainer [2019-11-20 01:54:31,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 01:54:31,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:54:31,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:54:31,745 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:54:31,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:54:31" (3/4) ... [2019-11-20 01:54:31,748 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 01:54:31,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:54:31,750 INFO L168 Benchmark]: Toolchain (without parser) took 1411.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -121.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-20 01:54:31,750 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:54:31,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:54:31,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:54:31,752 INFO L168 Benchmark]: Boogie Preprocessor took 61.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:54:31,753 INFO L168 Benchmark]: RCFGBuilder took 468.07 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:54:31,753 INFO L168 Benchmark]: TraceAbstraction took 429.27 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-11-20 01:54:31,754 INFO L168 Benchmark]: Witness Printer took 3.68 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. [2019-11-20 01:54:31,757 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 384.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 468.07 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 429.27 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.68 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: 0.3s, 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 0.1.24-678e011 [2019-11-20 01:54:33,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:54:33,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:54:33,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-20 01:54:33,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:54:33,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:54:33,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:54:33,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:54:33,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:54:33,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:54:33,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:54:33,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:54:33,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:54:33,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:54:33,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:54:33,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:54:33,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-20 01:54:33,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:54:33,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:54:33,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:54:33,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:54:33,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:54:33,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:54:33,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:54:33,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:54:33,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:54:33,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:54:33,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:54:33,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 01:54:33,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:54:33,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:54:33,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:54:33,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:54:33,825 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:54:33,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:54:33,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:54:33,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:54:33,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:54:33,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 01:54:33,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:54:33,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 01:54:33,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 01:54:33,829 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 01:54:33,829 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:54:33,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:54:33,830 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:54:33,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 01:54:33,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:54:33,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:54:33,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:54:33,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:54:33,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:54:33,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:54:33,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:54:33,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 01:54:33,833 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 01:54:33,834 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 01:54:33,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 01:54:33,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 01:54:33,834 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_04426e29-7cba-465d-9adf-f9d1f0ff961c/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 [2019-11-20 01:54:34,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:54:34,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:54:34,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:54:34,132 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:54:34,132 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:54:34,133 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-20 01:54:34,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/f7fed0d0b/a95e824d451343398e545dee073d711a/FLAG8afe14450 [2019-11-20 01:54:34,536 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:54:34,540 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-11-20 01:54:34,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/f7fed0d0b/a95e824d451343398e545dee073d711a/FLAG8afe14450 [2019-11-20 01:54:34,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/data/f7fed0d0b/a95e824d451343398e545dee073d711a [2019-11-20 01:54:34,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:54:34,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:54:34,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:54:34,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:54:34,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:54:34,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:54:34" (1/1) ... [2019-11-20 01:54:34,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3bfc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:34, skipping insertion in model container [2019-11-20 01:54:34,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:54:34" (1/1) ... [2019-11-20 01:54:34,931 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:54:34,950 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:54:35,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:54:35,141 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:54:35,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:54:35,264 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:54:35,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35 WrapperNode [2019-11-20 01:54:35,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:54:35,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:54:35,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:54:35,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:54:35,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:54:35,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:54:35,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:54:35,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:54:35,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... [2019-11-20 01:54:35,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:54:35,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:54:35,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:54:35,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:54:35,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:54:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:54:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-20 01:54:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 01:54:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:54:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:54:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-20 01:54:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 01:54:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:54:46,620 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:54:46,620 INFO L285 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-20 01:54:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:54:46 BoogieIcfgContainer [2019-11-20 01:54:46,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:54:46,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:54:46,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:54:46,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:54:46,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:54:34" (1/3) ... [2019-11-20 01:54:46,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e503402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:54:46, skipping insertion in model container [2019-11-20 01:54:46,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:54:35" (2/3) ... [2019-11-20 01:54:46,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e503402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:54:46, skipping insertion in model container [2019-11-20 01:54:46,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:54:46" (3/3) ... [2019-11-20 01:54:46,627 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-11-20 01:54:46,634 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:54:46,638 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 01:54:46,647 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 01:54:46,665 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:54:46,665 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 01:54:46,665 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:54:46,665 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:54:46,665 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:54:46,665 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:54:46,666 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:54:46,666 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:54:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-20 01:54:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 01:54:46,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:54:46,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:54:46,685 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:54:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:54:46,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2019-11-20 01:54:46,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:54:46,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677124137] [2019-11-20 01:54:46,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 01:54:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:54:46,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 01:54:46,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:54:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:46,977 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:54:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:46,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677124137] [2019-11-20 01:54:46,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:54:46,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 01:54:46,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423131763] [2019-11-20 01:54:46,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 01:54:46,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:54:46,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 01:54:47,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 01:54:47,002 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-20 01:54:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:54:47,020 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2019-11-20 01:54:47,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 01:54:47,022 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-20 01:54:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:54:47,031 INFO L225 Difference]: With dead ends: 66 [2019-11-20 01:54:47,032 INFO L226 Difference]: Without dead ends: 31 [2019-11-20 01:54:47,034 INFO L630 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 [2019-11-20 01:54:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-20 01:54:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-20 01:54:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 01:54:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 01:54:47,068 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2019-11-20 01:54:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:54:47,068 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 01:54:47,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 01:54:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 01:54:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 01:54:47,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:54:47,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:54:47,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 01:54:47,286 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:54:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:54:47,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2019-11-20 01:54:47,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:54:47,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865100515] [2019-11-20 01:54:47,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-20 01:54:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:54:47,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:54:47,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:54:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:47,645 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:54:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:47,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865100515] [2019-11-20 01:54:47,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:54:47,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 01:54:47,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597553889] [2019-11-20 01:54:47,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:54:47,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:54:47,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:54:47,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:54:47,695 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-20 01:54:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:54:50,296 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2019-11-20 01:54:50,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:54:50,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-20 01:54:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:54:50,415 INFO L225 Difference]: With dead ends: 60 [2019-11-20 01:54:50,415 INFO L226 Difference]: Without dead ends: 38 [2019-11-20 01:54:50,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:54:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-20 01:54:50,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-11-20 01:54:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 01:54:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-11-20 01:54:50,422 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2019-11-20 01:54:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:54:50,423 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-11-20 01:54:50,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:54:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-11-20 01:54:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:54:50,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:54:50,424 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:54:50,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 01:54:50,640 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:54:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:54:50,640 INFO L82 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2019-11-20 01:54:50,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:54:50,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825024735] [2019-11-20 01:54:50,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-20 01:54:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:54:50,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:54:50,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:54:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:50,791 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:54:50,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:54:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:54:50,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825024735] [2019-11-20 01:54:50,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:54:50,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 01:54:50,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062666387] [2019-11-20 01:54:50,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:54:50,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:54:50,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:54:50,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:54:50,837 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 7 states. [2019-11-20 01:55:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:55:01,324 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-11-20 01:55:01,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:55:01,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-20 01:55:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:55:01,325 INFO L225 Difference]: With dead ends: 41 [2019-11-20 01:55:01,325 INFO L226 Difference]: Without dead ends: 38 [2019-11-20 01:55:01,326 INFO L630 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 [2019-11-20 01:55:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-20 01:55:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-11-20 01:55:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 01:55:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-20 01:55:01,331 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2019-11-20 01:55:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:55:01,332 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-20 01:55:01,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:55:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-11-20 01:55:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:55:01,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:55:01,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:55:01,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 01:55:01,534 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:55:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:55:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2019-11-20 01:55:01,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:55:01,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21436127] [2019-11-20 01:55:01,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-20 01:55:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:55:01,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 01:55:01,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:55:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:55:01,915 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:55:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:55:02,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21436127] [2019-11-20 01:55:02,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:55:02,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-20 01:55:02,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756824141] [2019-11-20 01:55:02,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 01:55:02,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:55:02,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 01:55:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:55:02,133 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 12 states. [2019-11-20 01:55:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:55:16,899 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2019-11-20 01:55:16,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 01:55:16,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-11-20 01:55:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:55:16,919 INFO L225 Difference]: With dead ends: 58 [2019-11-20 01:55:16,919 INFO L226 Difference]: Without dead ends: 49 [2019-11-20 01:55:16,920 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:55:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-20 01:55:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2019-11-20 01:55:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 01:55:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-20 01:55:16,926 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2019-11-20 01:55:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:55:16,926 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-20 01:55:16,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 01:55:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-20 01:55:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:55:16,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:55:16,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:55:17,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 01:55:17,130 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:55:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:55:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2019-11-20 01:55:17,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:55:17,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515347138] [2019-11-20 01:55:17,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04426e29-7cba-465d-9adf-f9d1f0ff961c/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-20 01:55:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:55:17,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 01:55:17,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:55:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:55:17,530 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:55:18,712 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-20 01:55:50,771 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-11-20 01:56:02,092 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 01:56:02,293 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-20 01:56:02,294 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.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:100) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.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.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) ... 43 more [2019-11-20 01:56:02,298 INFO L168 Benchmark]: Toolchain (without parser) took 87382.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 960.4 MB in the beginning and 940.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 182.6 MB. Max. memory is 11.5 GB. [2019-11-20 01:56:02,299 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:56:02,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -198.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:56:02,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 01:56:02,300 INFO L168 Benchmark]: Boogie Preprocessor took 37.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:56:02,301 INFO L168 Benchmark]: RCFGBuilder took 11270.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:56:02,304 INFO L168 Benchmark]: TraceAbstraction took 75674.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.4 MB in the end (delta: 177.3 MB). Peak memory consumption was 177.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:56:02,307 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -198.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 11270.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 75674.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.4 MB in the end (delta: 177.3 MB). Peak memory consumption was 177.3 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...