./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+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_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/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 16ab6efcf7b0c54aabe43554a033bf1907c93094 ........................................................................................................................................................................................................................................................................................................ 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_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/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 16ab6efcf7b0c54aabe43554a033bf1907c93094 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2018-11-10 05:01:16,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:01:16,707 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:01:16,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:01:16,714 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:01:16,715 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:01:16,715 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:01:16,716 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:01:16,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:01:16,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:01:16,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:01:16,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:01:16,719 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:01:16,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:01:16,721 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:01:16,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:01:16,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:01:16,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:01:16,724 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:01:16,725 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:01:16,726 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:01:16,727 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:01:16,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:01:16,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:01:16,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:01:16,729 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:01:16,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:01:16,730 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:01:16,730 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:01:16,731 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:01:16,731 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:01:16,732 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:01:16,732 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:01:16,732 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:01:16,733 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:01:16,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:01:16,733 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 05:01:16,742 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:01:16,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:01:16,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:01:16,743 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:01:16,743 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:01:16,743 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:01:16,743 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:01:16,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:01:16,744 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:01:16,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:01:16,744 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:01:16,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:01:16,744 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:01:16,744 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:01:16,745 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:01:16,745 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:01:16,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:01:16,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:01:16,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:01:16,746 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:01:16,746 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:01:16,746 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:01:16,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:01:16,746 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_3f7f9a67-ae73-452f-9455-352687f53c58/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 -> 16ab6efcf7b0c54aabe43554a033bf1907c93094 [2018-11-10 05:01:16,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:01:16,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:01:16,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:01:16,780 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:01:16,781 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:01:16,781 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-11-10 05:01:16,816 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/1f15d7a72/4eaeb9aaeea9494a811fbab7000ac793/FLAGd424c2a2b [2018-11-10 05:01:17,205 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:01:17,206 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-11-10 05:01:17,211 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/1f15d7a72/4eaeb9aaeea9494a811fbab7000ac793/FLAGd424c2a2b [2018-11-10 05:01:17,220 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/1f15d7a72/4eaeb9aaeea9494a811fbab7000ac793 [2018-11-10 05:01:17,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:01:17,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:01:17,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:01:17,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:01:17,227 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:01:17,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d89bcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17, skipping insertion in model container [2018-11-10 05:01:17,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:01:17,247 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:01:17,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:01:17,348 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:01:17,359 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:01:17,367 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:01:17,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17 WrapperNode [2018-11-10 05:01:17,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:01:17,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:01:17,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:01:17,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:01:17,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... [2018-11-10 05:01:17,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:01:17,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:01:17,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:01:17,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:01:17,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/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 [2018-11-10 05:01:17,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:01:17,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:01:17,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:01:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:01:17,605 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:01:17,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:01:17 BoogieIcfgContainer [2018-11-10 05:01:17,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:01:17,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:01:17,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:01:17,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:01:17,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:01:17" (1/3) ... [2018-11-10 05:01:17,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3460deca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:01:17, skipping insertion in model container [2018-11-10 05:01:17,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:17" (2/3) ... [2018-11-10 05:01:17,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3460deca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:01:17, skipping insertion in model container [2018-11-10 05:01:17,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:01:17" (3/3) ... [2018-11-10 05:01:17,612 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-11-10 05:01:17,620 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:01:17,626 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:01:17,638 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:01:17,662 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:01:17,662 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:01:17,663 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:01:17,663 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:01:17,663 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:01:17,663 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:01:17,663 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:01:17,663 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:01:17,663 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:01:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 05:01:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 05:01:17,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:01:17,682 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:01:17,684 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:01:17,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:01:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash 857130946, now seen corresponding path program 1 times [2018-11-10 05:01:17,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:01:17,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:01:17,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:01:17,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:01:17,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:01:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:01:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:01:17,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:01:17,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:01:17,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 05:01:17,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 05:01:17,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 05:01:17,817 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-11-10 05:01:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:01:17,858 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-11-10 05:01:17,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 05:01:17,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-10 05:01:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:01:17,865 INFO L225 Difference]: With dead ends: 32 [2018-11-10 05:01:17,865 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 05:01:17,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:01:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 05:01:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 05:01:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:01:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-10 05:01:17,893 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-11-10 05:01:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:01:17,894 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-10 05:01:17,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 05:01:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-10 05:01:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 05:01:17,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:01:17,894 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:01:17,894 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:01:17,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:01:17,895 INFO L82 PathProgramCache]: Analyzing trace with hash 872234983, now seen corresponding path program 1 times [2018-11-10 05:01:17,895 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:01:17,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:01:17,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:01:17,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:01:17,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:01:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:01:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:01:17,919 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:01:17,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:01:17 BoogieIcfgContainer [2018-11-10 05:01:17,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:01:17,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:01:17,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:01:17,937 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:01:17,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:01:17" (3/4) ... [2018-11-10 05:01:17,940 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 05:01:17,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:01:17,941 INFO L168 Benchmark]: Toolchain (without parser) took 718.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:01:17,942 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:01:17,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.83 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:01:17,943 INFO L168 Benchmark]: Boogie Preprocessor took 23.84 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:01:17,944 INFO L168 Benchmark]: RCFGBuilder took 213.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -221.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:01:17,944 INFO L168 Benchmark]: TraceAbstraction took 330.21 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:01:17,945 INFO L168 Benchmark]: Witness Printer took 3.58 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. [2018-11-10 05:01:17,946 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.83 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.84 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 213.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -221.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 330.21 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.58 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: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L1] int __return_main; [L7] int __return_76; VAL [\old(__return_76)=3, \old(__return_main)=2, __return_76=0, __return_main=0] [L10] double main__x; [L11] double main__y; [L12] main__x = __VERIFIER_nondet_double() [L13] int main____CPAchecker_TMP_0; VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main__x=1] [L14] COND TRUE main__x >= 0.0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main__x=1] [L16] COND TRUE main__x <= 10.0 [L18] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L19] COND TRUE main____CPAchecker_TMP_0 != 0 [L21] main__y = (main__x * main__x) - main__x VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L22] COND TRUE main__y >= 0 [L24] main__y = main__x / 10.0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L26] int main____CPAchecker_TMP_1; VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L27] COND FALSE !(main__y >= 0.0) VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L53] main____CPAchecker_TMP_1 = 0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] [L34] int __tmp_1; [L35] __tmp_1 = main____CPAchecker_TMP_1 [L36] int __VERIFIER_assert__cond; [L37] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] [L38] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] [L40] __VERIFIER_error() VAL [\old(__return_76)=0, __return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 5 SDslu, 49 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2018-11-10 05:01:19,353 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:01:19,354 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:01:19,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:01:19,363 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:01:19,363 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:01:19,364 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:01:19,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:01:19,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:01:19,367 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:01:19,367 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:01:19,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:01:19,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:01:19,369 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:01:19,369 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:01:19,370 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:01:19,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:01:19,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:01:19,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:01:19,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:01:19,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:01:19,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:01:19,377 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:01:19,377 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:01:19,377 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:01:19,378 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:01:19,378 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:01:19,379 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:01:19,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:01:19,380 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:01:19,380 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:01:19,381 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:01:19,381 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:01:19,381 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:01:19,382 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:01:19,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:01:19,382 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 05:01:19,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:01:19,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:01:19,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:01:19,393 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:01:19,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:01:19,394 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:01:19,394 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:01:19,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:01:19,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:01:19,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:01:19,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:01:19,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:01:19,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:01:19,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:01:19,396 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:01:19,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:01:19,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:01:19,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:01:19,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:01:19,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:01:19,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:01:19,397 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 05:01:19,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:01:19,397 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 05:01:19,397 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 05:01:19,397 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_3f7f9a67-ae73-452f-9455-352687f53c58/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 -> 16ab6efcf7b0c54aabe43554a033bf1907c93094 [2018-11-10 05:01:19,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:01:19,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:01:19,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:01:19,440 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:01:19,440 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:01:19,441 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-11-10 05:01:19,483 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/08d834733/faa4451363a54923aaa85a95ae1bb998/FLAG830035d31 [2018-11-10 05:01:19,871 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:01:19,872 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-11-10 05:01:19,876 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/08d834733/faa4451363a54923aaa85a95ae1bb998/FLAG830035d31 [2018-11-10 05:01:19,885 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/uautomizer/data/08d834733/faa4451363a54923aaa85a95ae1bb998 [2018-11-10 05:01:19,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:01:19,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:01:19,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:01:19,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:01:19,892 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:01:19,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:01:19" (1/1) ... [2018-11-10 05:01:19,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26052e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:19, skipping insertion in model container [2018-11-10 05:01:19,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:01:19" (1/1) ... [2018-11-10 05:01:19,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:01:19,919 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:01:20,021 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:01:20,024 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:01:20,038 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:01:20,047 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:01:20,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20 WrapperNode [2018-11-10 05:01:20,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:01:20,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:01:20,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:01:20,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:01:20,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... [2018-11-10 05:01:20,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:01:20,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:01:20,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:01:20,069 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:01:20,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/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 [2018-11-10 05:01:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:01:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:01:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:01:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:01:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-10 05:01:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 05:01:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:01:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:01:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:01:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:01:22,806 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:01:22,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:01:22 BoogieIcfgContainer [2018-11-10 05:01:22,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:01:22,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:01:22,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:01:22,810 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:01:22,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:01:19" (1/3) ... [2018-11-10 05:01:22,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10550c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:01:22, skipping insertion in model container [2018-11-10 05:01:22,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:01:20" (2/3) ... [2018-11-10 05:01:22,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10550c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:01:22, skipping insertion in model container [2018-11-10 05:01:22,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:01:22" (3/3) ... [2018-11-10 05:01:22,813 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-11-10 05:01:22,820 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:01:22,826 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:01:22,837 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:01:22,864 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:01:22,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:01:22,864 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:01:22,864 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:01:22,864 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:01:22,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:01:22,865 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:01:22,865 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:01:22,865 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:01:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 05:01:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 05:01:22,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:01:22,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:01:22,885 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:01:22,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:01:22,888 INFO L82 PathProgramCache]: Analyzing trace with hash 857130946, now seen corresponding path program 1 times [2018-11-10 05:01:22,891 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:01:22,891 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/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 [2018-11-10 05:01:22,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:01:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:01:23,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:01:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:01:23,350 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:01:23,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:01:23,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:01:23,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 05:01:23,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 05:01:23,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 05:01:23,376 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-11-10 05:01:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:01:23,421 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-11-10 05:01:23,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 05:01:23,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-10 05:01:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:01:23,428 INFO L225 Difference]: With dead ends: 32 [2018-11-10 05:01:23,428 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 05:01:23,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:01:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 05:01:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 05:01:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:01:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-10 05:01:23,454 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-11-10 05:01:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:01:23,455 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-10 05:01:23,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 05:01:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-10 05:01:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 05:01:23,456 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:01:23,456 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:01:23,456 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:01:23,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:01:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash 872234983, now seen corresponding path program 1 times [2018-11-10 05:01:23,457 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:01:23,457 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/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 [2018-11-10 05:01:23,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:01:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:01:23,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:01:26,102 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.geq main_~main__x~0 (_ +zero 11 53)) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0))))) is different from false [2018-11-10 05:01:28,268 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.geq main_~main__x~0 (_ +zero 11 53)) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0))))) is different from true [2018-11-10 05:01:34,823 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (_ +zero 11 53))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from false [2018-11-10 05:01:36,979 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (_ +zero 11 53))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from true [2018-11-10 05:01:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:01:50,080 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:01:50,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:01:50,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:01:50,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:01:50,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:01:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=3, Unknown=4, NotChecked=6, Total=20 [2018-11-10 05:01:50,093 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-11-10 05:01:54,136 WARN L832 $PredicateComparison]: unable to prove that (and (fp.geq c_main_~main__x~0 (_ +zero 11 53)) (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.geq main_~main__x~0 (_ +zero 11 53)) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)))))) is different from false [2018-11-10 05:01:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:01:55,462 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-10 05:01:55,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:01:55,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-10 05:01:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:01:55,499 INFO L225 Difference]: With dead ends: 31 [2018-11-10 05:01:55,499 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 05:01:55,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=9, Invalid=4, Unknown=5, NotChecked=12, Total=30 [2018-11-10 05:01:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 05:01:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2018-11-10 05:01:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 05:01:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-10 05:01:55,503 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2018-11-10 05:01:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:01:55,503 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-10 05:01:55,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:01:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-10 05:01:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 05:01:55,504 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:01:55,504 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:01:55,504 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:01:55,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:01:55,504 INFO L82 PathProgramCache]: Analyzing trace with hash -190016834, now seen corresponding path program 1 times [2018-11-10 05:01:55,504 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:01:55,504 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/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 [2018-11-10 05:01:55,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:01:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:01:55,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:01:57,994 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from false [2018-11-10 05:02:00,027 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from true [2018-11-10 05:02:06,145 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0)) (_ +zero 11 53))))) is different from false [2018-11-10 05:02:08,175 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0)) (_ +zero 11 53))))) is different from true [2018-11-10 05:02:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:20,398 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:02:20,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:02:20,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 05:02:20,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 05:02:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 05:02:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=6, Unknown=4, NotChecked=10, Total=30 [2018-11-10 05:02:20,411 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-11-10 05:02:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:26,944 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-10 05:02:26,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:02:26,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-10 05:02:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:26,985 INFO L225 Difference]: With dead ends: 25 [2018-11-10 05:02:26,985 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 05:02:26,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=10, Invalid=6, Unknown=4, NotChecked=10, Total=30 [2018-11-10 05:02:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 05:02:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-10 05:02:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:02:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-10 05:02:26,989 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-11-10 05:02:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:26,989 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-10 05:02:26,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 05:02:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-10 05:02:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 05:02:26,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:26,990 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:26,990 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:02:26,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash 809832475, now seen corresponding path program 1 times [2018-11-10 05:02:26,990 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:02:26,991 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/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 [2018-11-10 05:02:26,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:27,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:02:31,650 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (and (fp.leq main_~main__x~0 .cse0) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 .cse0))))) is different from true [2018-11-10 05:02:43,253 WARN L179 SmtUtils]: Spent 7.92 s on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 05:02:49,838 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (let ((.cse1 (fp.div RNE main_~main__x~0 .cse0))) (and (fp.leq main_~main__x~0 .cse0) (not (fp.leq .cse1 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse1 (_ +zero 11 53)))))) is different from false [2018-11-10 05:02:52,008 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (let ((.cse1 (fp.div RNE main_~main__x~0 .cse0))) (and (fp.leq main_~main__x~0 .cse0) (not (fp.leq .cse1 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse1 (_ +zero 11 53)))))) is different from true [2018-11-10 05:03:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:03:05,217 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:03:05,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:03:05,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 05:03:05,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 05:03:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 05:03:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=7, Unknown=4, NotChecked=10, Total=30 [2018-11-10 05:03:05,231 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-11-10 05:03:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:03:18,155 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-11-10 05:03:18,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:03:18,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-10 05:03:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:03:18,360 INFO L225 Difference]: With dead ends: 26 [2018-11-10 05:03:18,360 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 05:03:18,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=9, Invalid=7, Unknown=4, NotChecked=10, Total=30 [2018-11-10 05:03:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 05:03:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 05:03:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:03:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-11-10 05:03:18,364 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 17 [2018-11-10 05:03:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:03:18,365 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-11-10 05:03:18,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 05:03:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-11-10 05:03:18,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 05:03:18,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:03:18,365 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:03:18,366 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:03:18,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:03:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2055202780, now seen corresponding path program 1 times [2018-11-10 05:03:18,366 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:03:18,366 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f7f9a67-ae73-452f-9455-352687f53c58/bin-2019/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 [2018-11-10 05:03:18,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:03:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:03:18,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:03:30,696 WARN L179 SmtUtils]: Spent 8.52 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-10 05:03:32,744 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE .cse0 ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse0 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from false [2018-11-10 05:03:34,790 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE .cse0 ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse0 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from true [2018-11-10 05:03:36,843 WARN L832 $PredicateComparison]: unable to prove that (and (fp.geq c_main_~main__y~0 (_ +zero 11 53)) (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE .cse0 ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse0 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from false [2018-11-10 05:03:42,988 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (let ((.cse0 (fp.add RNE .cse1 ((_ to_fp 11 53) RNE 2.0)))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (not (fp.leq .cse0 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse1 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from false [2018-11-10 05:03:45,031 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (let ((.cse0 (fp.add RNE .cse1 ((_ to_fp 11 53) RNE 2.0)))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (not (fp.leq .cse0 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse1 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from true [2018-11-10 05:03:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:03:55,228 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:03:55,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:03:55,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 05:03:55,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 05:03:55,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 05:03:55,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=11, Unknown=5, NotChecked=24, Total=56 [2018-11-10 05:03:55,249 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 8 states. [2018-11-10 05:03:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:03:59,856 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-11-10 05:03:59,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:03:59,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-10 05:03:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:03:59,908 INFO L225 Difference]: With dead ends: 18 [2018-11-10 05:03:59,909 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 05:03:59,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=16, Invalid=11, Unknown=5, NotChecked=24, Total=56 [2018-11-10 05:03:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 05:03:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 05:03:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 05:03:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:03:59,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-10 05:03:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:03:59,910 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:03:59,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 05:03:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:03:59,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 05:03:59,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 05:04:21,533 WARN L179 SmtUtils]: Spent 21.58 s on a formula simplification that was a NOOP. DAG size: 36 [2018-11-10 05:04:47,157 WARN L179 SmtUtils]: Spent 25.62 s on a formula simplification that was a NOOP. DAG size: 39 [2018-11-10 05:05:16,810 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.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:150) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:982) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:324) 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) ... 31 more [2018-11-10 05:05:16,812 INFO L168 Benchmark]: Toolchain (without parser) took 236923.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.2 MB in the beginning and 1.0 GB in the end (delta: -50.8 MB). Peak memory consumption was 90.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:16,812 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-11-10 05:05:16,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.37 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 937.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:16,813 INFO L168 Benchmark]: Boogie Preprocessor took 21.42 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:16,814 INFO L168 Benchmark]: RCFGBuilder took 2737.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 931.8 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:16,814 INFO L168 Benchmark]: TraceAbstraction took 234003.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 117.1 MB). Peak memory consumption was 117.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:05:16,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 158.37 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 937.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.42 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2737.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 931.8 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234003.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 117.1 MB). Peak memory consumption was 117.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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...