./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 14660901cc5c4d61dda44d0e62586d716b569100 .......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 14660901cc5c4d61dda44d0e62586d716b569100 .......................................................................................................................................................................................................................................................................................................................................... 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. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:17:01,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:17:01,599 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:17:01,608 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:17:01,608 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:17:01,610 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:17:01,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:17:01,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:17:01,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:17:01,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:17:01,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:17:01,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:17:01,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:17:01,621 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:17:01,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:17:01,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:17:01,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:17:01,627 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:17:01,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:17:01,630 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:17:01,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:17:01,631 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:17:01,644 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:17:01,644 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:17:01,644 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:17:01,645 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:17:01,646 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:17:01,646 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:17:01,647 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:17:01,648 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:17:01,650 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:17:01,650 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:17:01,651 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:17:01,651 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:17:01,652 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:17:01,652 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:17:01,652 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-27 00:17:01,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:17:01,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:17:01,667 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:17:01,667 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 00:17:01,668 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 00:17:01,668 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 00:17:01,668 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 00:17:01,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:17:01,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:17:01,670 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:17:01,670 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:17:01,670 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:17:01,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:17:01,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:17:01,670 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:17:01,670 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:17:01,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:17:01,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:17:01,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:17:01,671 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:17:01,671 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 00:17:01,671 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:17:01,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:17:01,672 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-10-27 00:17:01,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:17:01,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:17:01,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:17:01,723 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:17:01,723 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:17:01,724 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-27 00:17:01,769 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/d8b8e083a/ef58c77829a5464e8fbca999f7b39d7e/FLAGed1ce0933 [2018-10-27 00:17:02,116 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:17:02,117 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-27 00:17:02,121 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/d8b8e083a/ef58c77829a5464e8fbca999f7b39d7e/FLAGed1ce0933 [2018-10-27 00:17:02,134 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/d8b8e083a/ef58c77829a5464e8fbca999f7b39d7e [2018-10-27 00:17:02,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:17:02,138 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:17:02,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:17:02,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:17:02,142 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:17:02,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124d7993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02, skipping insertion in model container [2018-10-27 00:17:02,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:17:02,167 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:17:02,274 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:17:02,278 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:17:02,291 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:17:02,303 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:17:02,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02 WrapperNode [2018-10-27 00:17:02,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:17:02,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:17:02,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:17:02,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:17:02,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... [2018-10-27 00:17:02,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:17:02,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:17:02,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:17:02,330 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:17:02,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 [2018-10-27 00:17:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:17:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:17:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:17:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-27 00:17:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:17:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:17:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:17:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:17:02,670 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:17:02,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:02 BoogieIcfgContainer [2018-10-27 00:17:02,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:17:02,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:17:02,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:17:02,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:17:02,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:17:02" (1/3) ... [2018-10-27 00:17:02,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683cf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:17:02, skipping insertion in model container [2018-10-27 00:17:02,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:02" (2/3) ... [2018-10-27 00:17:02,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683cf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:17:02, skipping insertion in model container [2018-10-27 00:17:02,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:02" (3/3) ... [2018-10-27 00:17:02,678 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-27 00:17:02,686 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:17:02,692 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:17:02,706 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:17:02,731 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:17:02,733 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:17:02,733 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:17:02,733 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:17:02,734 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:17:02,734 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:17:02,734 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:17:02,734 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:17:02,734 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:17:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-27 00:17:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 00:17:02,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:02,755 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:02,757 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:02,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-10-27 00:17:02,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:17:02,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:17:02,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:02,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:02,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:17:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:17:02,852 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:17:02,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:17:02 BoogieIcfgContainer [2018-10-27 00:17:02,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:17:02,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:17:02,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:17:02,875 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:17:02,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:02" (3/4) ... [2018-10-27 00:17:02,879 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 00:17:02,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:17:02,880 INFO L168 Benchmark]: Toolchain (without parser) took 742.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:17:02,882 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:17:02,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.87 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:02,884 INFO L168 Benchmark]: Boogie Preprocessor took 25.56 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:17:02,884 INFO L168 Benchmark]: RCFGBuilder took 341.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 949.1 MB in the beginning and 1.2 GB in the end (delta: -201.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:02,885 INFO L168 Benchmark]: TraceAbstraction took 202.46 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:02,886 INFO L168 Benchmark]: Witness Printer took 4.97 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. [2018-10-27 00:17:02,890 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.87 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.56 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 341.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 949.1 MB in the beginning and 1.2 GB in the end (delta: -201.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 202.46 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.97 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: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-10-27 00:17:04,786 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:17:04,787 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:17:04,800 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:17:04,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:17:04,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:17:04,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:17:04,804 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:17:04,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:17:04,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:17:04,807 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:17:04,807 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:17:04,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:17:04,809 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:17:04,810 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:17:04,810 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:17:04,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:17:04,813 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:17:04,815 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:17:04,816 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:17:04,817 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:17:04,818 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:17:04,820 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:17:04,821 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:17:04,821 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:17:04,821 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:17:04,822 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:17:04,823 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:17:04,823 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:17:04,825 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:17:04,825 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:17:04,826 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:17:04,826 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:17:04,826 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:17:04,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:17:04,827 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:17:04,828 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-27 00:17:04,839 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:17:04,839 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:17:04,840 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:17:04,840 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 00:17:04,841 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 00:17:04,842 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 00:17:04,842 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 00:17:04,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:17:04,842 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:17:04,842 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:17:04,842 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:17:04,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:17:04,843 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:17:04,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:17:04,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:17:04,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:17:04,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:17:04,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:17:04,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:17:04,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:17:04,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:17:04,845 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-27 00:17:04,845 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:17:04,845 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 00:17:04,845 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 00:17:04,845 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-10-27 00:17:04,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:17:04,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:17:04,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:17:04,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:17:04,915 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:17:04,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-27 00:17:04,960 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/5a5fc37bd/d6f5fc4feea9446f8ac914d74d6094a4/FLAG4e8ccb820 [2018-10-27 00:17:05,320 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:17:05,321 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-27 00:17:05,332 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/5a5fc37bd/d6f5fc4feea9446f8ac914d74d6094a4/FLAG4e8ccb820 [2018-10-27 00:17:05,345 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/data/5a5fc37bd/d6f5fc4feea9446f8ac914d74d6094a4 [2018-10-27 00:17:05,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:17:05,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:17:05,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:17:05,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:17:05,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:17:05,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec86596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05, skipping insertion in model container [2018-10-27 00:17:05,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:17:05,385 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:17:05,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:17:05,536 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:17:05,549 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:17:05,566 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:17:05,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05 WrapperNode [2018-10-27 00:17:05,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:17:05,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:17:05,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:17:05,568 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:17:05,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... [2018-10-27 00:17:05,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:17:05,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:17:05,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:17:05,600 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:17:05,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 [2018-10-27 00:17:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:17:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:17:05,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:17:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-27 00:17:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:17:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:17:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:17:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:17:06,650 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:17:06,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:06 BoogieIcfgContainer [2018-10-27 00:17:06,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:17:06,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:17:06,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:17:06,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:17:06,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:17:05" (1/3) ... [2018-10-27 00:17:06,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5f65aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:17:06, skipping insertion in model container [2018-10-27 00:17:06,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:17:05" (2/3) ... [2018-10-27 00:17:06,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5f65aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:17:06, skipping insertion in model container [2018-10-27 00:17:06,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:06" (3/3) ... [2018-10-27 00:17:06,655 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-27 00:17:06,668 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:17:06,674 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:17:06,685 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:17:06,710 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:17:06,711 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:17:06,711 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:17:06,711 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:17:06,711 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:17:06,711 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:17:06,712 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:17:06,712 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:17:06,712 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:17:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-27 00:17:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 00:17:06,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:06,733 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:06,735 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:06,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-10-27 00:17:06,744 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:17:06,745 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-27 00:17:06,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-27 00:17:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:07,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:17:10,239 WARN L179 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 00:17:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:10,261 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:17:10,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:17:10,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:17:10,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:17:10,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:17:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:17:10,326 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-10-27 00:17:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:12,133 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-10-27 00:17:12,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:17:12,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-27 00:17:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:12,798 INFO L225 Difference]: With dead ends: 22 [2018-10-27 00:17:12,799 INFO L226 Difference]: Without dead ends: 11 [2018-10-27 00:17:12,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:17:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-27 00:17:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-27 00:17:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-27 00:17:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-27 00:17:12,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-27 00:17:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:12,837 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-27 00:17:12,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:17:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-27 00:17:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 00:17:12,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:12,838 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:12,839 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:12,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:12,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-10-27 00:17:12,839 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:17:12,839 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 [2018-10-27 00:17:12,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:13,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:17:18,323 WARN L179 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 00:17:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:18,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:17:22,802 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div RNE c_main_~main__x1~0 ((_ to_fp 11 53) RNE (/ 8.0 5.0))) c_main_~main__x1~0)) is different from false [2018-10-27 00:17:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-10-27 00:17:23,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:17:23,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-27 00:17:23,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:17:23,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:17:23,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=11, Unknown=3, NotChecked=6, Total=30 [2018-10-27 00:17:23,444 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-27 00:17:31,747 WARN L179 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-27 00:17:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:36,301 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-10-27 00:17:36,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 00:17:36,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-27 00:17:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:36,303 INFO L225 Difference]: With dead ends: 16 [2018-10-27 00:17:36,303 INFO L226 Difference]: Without dead ends: 13 [2018-10-27 00:17:36,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=14, Invalid=17, Unknown=3, NotChecked=8, Total=42 [2018-10-27 00:17:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-27 00:17:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-27 00:17:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-27 00:17:36,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-27 00:17:36,307 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-27 00:17:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:36,307 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-27 00:17:36,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:17:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-27 00:17:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-27 00:17:36,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:36,310 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:36,310 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:36,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1473580076, now seen corresponding path program 2 times [2018-10-27 00:17:36,311 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:17:36,311 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06905ace-287f-4834-8eee-b5c0d11de03f/bin-2019/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 [2018-10-27 00:17:36,316 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-27 00:17:37,191 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-27 00:17:37,192 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:17:37,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:17:46,612 WARN L179 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 00:17:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:46,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:17:48,883 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-27 00:17:48,884 FATAL L265 ToolchainWalker]: 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. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) 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:123) 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:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-10-27 00:17:48,887 INFO L168 Benchmark]: Toolchain (without parser) took 43539.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -117.7 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:48,888 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:17:48,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.01 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:48,894 INFO L168 Benchmark]: Boogie Preprocessor took 32.70 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:17:48,894 INFO L168 Benchmark]: RCFGBuilder took 1050.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:48,895 INFO L168 Benchmark]: TraceAbstraction took 42235.24 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: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. [2018-10-27 00:17:48,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 217.01 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.70 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1050.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 42235.24 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: 63.6 MB). Peak memory consumption was 63.6 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. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: 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...