./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31da98a788dd1938c78053bade42bc512d4e8954 ........................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31da98a788dd1938c78053bade42bc512d4e8954 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:09:38,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:09:38,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:09:38,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:09:38,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:09:38,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:09:38,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:09:38,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:09:38,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:09:38,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:09:38,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:09:38,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:09:38,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:09:38,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:09:38,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:09:38,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:09:38,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:09:38,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:09:38,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:09:38,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:09:38,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:09:38,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:09:38,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:09:38,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:09:38,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:09:38,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:09:38,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:09:38,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:09:38,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:09:38,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:09:38,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:09:38,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:09:38,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:09:38,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:09:38,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:09:38,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:09:38,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:09:38,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:09:38,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:09:38,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:09:38,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:09:38,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:09:38,622 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:09:38,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:09:38,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:09:38,623 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:09:38,623 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:09:38,623 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:09:38,624 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:09:38,624 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:09:38,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:09:38,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:09:38,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:09:38,624 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:09:38,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:09:38,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:09:38,625 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:09:38,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:09:38,626 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:09:38,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:09:38,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:09:38,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:09:38,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:09:38,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:09:38,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:09:38,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:09:38,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:09:38,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:09:38,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:09:38,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:09:38,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:09:38,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:09:38,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:09:38,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:09:38,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:09:38,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:09:38,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:09:38,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:09:38,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:09:38,630 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan 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 -> Taipan 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-26 02:09:38,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:09:38,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:09:38,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:09:38,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:09:38,818 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:09:38,819 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-26 02:09:38,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/9acb78cb2/90ee1942aa044dada3b888bec54c5f40/FLAGb67ffd573 [2019-11-26 02:09:39,292 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:09:39,293 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-26 02:09:39,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/9acb78cb2/90ee1942aa044dada3b888bec54c5f40/FLAGb67ffd573 [2019-11-26 02:09:39,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/9acb78cb2/90ee1942aa044dada3b888bec54c5f40 [2019-11-26 02:09:39,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:09:39,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:09:39,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:09:39,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:09:39,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:09:39,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a794ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39, skipping insertion in model container [2019-11-26 02:09:39,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:09:39,367 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:09:39,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:09:39,585 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:09:39,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:09:39,627 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:09:39,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39 WrapperNode [2019-11-26 02:09:39,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:09:39,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:09:39,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:09:39,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:09:39,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:09:39,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:09:39,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:09:39,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:09:39,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... [2019-11-26 02:09:39,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:09:39,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:09:39,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:09:39,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:09:39,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:09:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:09:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:09:39,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:09:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:09:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:09:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:09:40,377 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:09:40,378 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-26 02:09:40,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:09:40 BoogieIcfgContainer [2019-11-26 02:09:40,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:09:40,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:09:40,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:09:40,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:09:40,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:09:39" (1/3) ... [2019-11-26 02:09:40,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c430b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:09:40, skipping insertion in model container [2019-11-26 02:09:40,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:39" (2/3) ... [2019-11-26 02:09:40,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c430b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:09:40, skipping insertion in model container [2019-11-26 02:09:40,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:09:40" (3/3) ... [2019-11-26 02:09:40,386 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-26 02:09:40,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:09:40,402 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:09:40,412 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:09:40,436 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:09:40,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:09:40,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:09:40,437 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:09:40,437 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:09:40,437 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:09:40,437 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:09:40,438 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:09:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-26 02:09:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:09:40,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:40,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:40,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1732211786, now seen corresponding path program 1 times [2019-11-26 02:09:40,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:09:40,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089259558] [2019-11-26 02:09:40,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:09:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:40,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089259558] [2019-11-26 02:09:40,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:40,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:09:40,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27029109] [2019-11-26 02:09:40,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:09:40,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:09:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:09:40,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:09:40,592 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-26 02:09:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:40,605 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-11-26 02:09:40,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:09:40,607 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:09:40,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:40,613 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:09:40,613 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:09:40,615 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:09:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:09:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:09:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:09:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:09:40,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2019-11-26 02:09:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:40,644 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:09:40,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:09:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:09:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:09:40,645 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:40,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:40,646 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:40,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:40,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1298590837, now seen corresponding path program 1 times [2019-11-26 02:09:40,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:09:40,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706684503] [2019-11-26 02:09:40,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:09:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:09:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:09:40,759 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:09:40,759 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:09:40,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:09:40 BoogieIcfgContainer [2019-11-26 02:09:40,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:09:40,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:09:40,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:09:40,782 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:09:40,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:09:40" (3/4) ... [2019-11-26 02:09:40,785 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:09:40,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:09:40,788 INFO L168 Benchmark]: Toolchain (without parser) took 1460.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:40,788 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:09:40,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:40,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:09:40,790 INFO L168 Benchmark]: Boogie Preprocessor took 31.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:40,791 INFO L168 Benchmark]: RCFGBuilder took 680.34 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: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:40,792 INFO L168 Benchmark]: TraceAbstraction took 401.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:40,792 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:09:40,795 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 680.34 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: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 401.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.18 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] float res = fmin_float(x, y); [L44] return x != x; [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:09:42,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:09:42,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:09:42,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:09:42,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:09:42,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:09:42,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:09:42,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:09:42,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:09:42,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:09:42,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:09:42,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:09:42,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:09:42,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:09:42,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:09:42,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:09:42,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:09:42,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:09:42,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:09:42,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:09:42,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:09:42,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:09:42,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:09:42,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:09:42,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:09:42,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:09:42,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:09:42,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:09:42,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:09:42,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:09:42,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:09:42,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:09:42,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:09:42,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:09:42,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:09:42,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:09:42,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:09:42,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:09:42,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:09:42,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:09:42,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:09:42,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:09:42,765 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:09:42,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:09:42,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:09:42,775 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:09:42,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:09:42,775 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:09:42,776 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:09:42,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:09:42,776 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:09:42,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:09:42,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:09:42,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:09:42,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:09:42,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:09:42,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:09:42,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:09:42,778 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:09:42,778 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:09:42,779 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:09:42,779 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:09:42,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:09:42,779 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:09:42,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:09:42,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:09:42,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:09:42,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:09:42,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:09:42,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:09:42,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:09:42,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:09:42,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:09:42,781 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:09:42,782 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:09:42,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:09:42,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:09:42,782 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan 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 -> Taipan 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-26 02:09:43,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:09:43,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:09:43,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:09:43,108 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:09:43,108 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:09:43,109 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-26 02:09:43,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/901d43df7/d2d77877c04b4c2795e93ab087aee03b/FLAGc5444d8e4 [2019-11-26 02:09:43,591 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:09:43,592 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-26 02:09:43,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/901d43df7/d2d77877c04b4c2795e93ab087aee03b/FLAGc5444d8e4 [2019-11-26 02:09:43,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/data/901d43df7/d2d77877c04b4c2795e93ab087aee03b [2019-11-26 02:09:43,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:09:44,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:09:44,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:09:44,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:09:44,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:09:44,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:09:43" (1/1) ... [2019-11-26 02:09:44,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7890b756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44, skipping insertion in model container [2019-11-26 02:09:44,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:09:43" (1/1) ... [2019-11-26 02:09:44,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:09:44,039 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:09:44,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:09:44,222 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:09:44,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:09:44,270 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:09:44,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44 WrapperNode [2019-11-26 02:09:44,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:09:44,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:09:44,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:09:44,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:09:44,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:09:44,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:09:44,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:09:44,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:09:44,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... [2019-11-26 02:09:44,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:09:44,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:09:44,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:09:44,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:09:44,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:09:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:09:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:09:44,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:09:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:09:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:09:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:09:44,821 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:09:44,821 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-26 02:09:44,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:09:44 BoogieIcfgContainer [2019-11-26 02:09:44,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:09:44,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:09:44,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:09:44,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:09:44,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:09:43" (1/3) ... [2019-11-26 02:09:44,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376a2ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:09:44, skipping insertion in model container [2019-11-26 02:09:44,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:09:44" (2/3) ... [2019-11-26 02:09:44,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376a2ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:09:44, skipping insertion in model container [2019-11-26 02:09:44,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:09:44" (3/3) ... [2019-11-26 02:09:44,829 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-26 02:09:44,835 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:09:44,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:09:44,848 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:09:44,867 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:09:44,867 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:09:44,867 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:09:44,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:09:44,868 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:09:44,868 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:09:44,868 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:09:44,868 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:09:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-26 02:09:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:09:44,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:44,890 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:44,891 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:44,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:44,895 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-26 02:09:44,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:09:44,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433498968] [2019-11-26 02:09:44,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-26 02:09:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:44,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:09:44,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:09:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:45,003 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:09:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:45,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433498968] [2019-11-26 02:09:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:09:45,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685272542] [2019-11-26 02:09:45,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:09:45,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:09:45,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:09:45,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:09:45,024 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-26 02:09:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:45,041 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-26 02:09:45,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:09:45,042 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:09:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:45,051 INFO L225 Difference]: With dead ends: 54 [2019-11-26 02:09:45,051 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:09:45,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:09:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:09:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-26 02:09:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:09:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-26 02:09:45,082 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-26 02:09:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:45,082 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-26 02:09:45,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:09:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-26 02:09:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:09:45,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:45,083 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:45,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:09:45,284 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-26 02:09:45,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:09:45,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874868936] [2019-11-26 02:09:45,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-26 02:09:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:45,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:09:45,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:09:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:45,391 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:09:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:45,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874868936] [2019-11-26 02:09:45,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:45,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:09:45,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858035311] [2019-11-26 02:09:45,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:09:45,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:09:45,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:09:45,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:09:45,415 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-26 02:09:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:45,527 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-26 02:09:45,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:09:45,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:09:45,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:45,529 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:09:45,529 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:09:45,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:09:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:09:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-26 02:09:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:09:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-26 02:09:45,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-26 02:09:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:45,537 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-26 02:09:45,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:09:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-26 02:09:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:09:45,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:45,540 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:45,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:09:45,754 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-26 02:09:45,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:09:45,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886926858] [2019-11-26 02:09:45,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-26 02:09:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:45,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:09:45,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:09:45,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:09:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:45,941 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:09:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:46,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886926858] [2019-11-26 02:09:46,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:46,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:09:46,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840463109] [2019-11-26 02:09:46,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:09:46,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:09:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:09:46,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:09:46,058 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-26 02:09:46,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:46,338 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-26 02:09:46,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:09:46,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-26 02:09:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:46,341 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:09:46,341 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:09:46,341 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:09:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:09:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-26 02:09:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:09:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-26 02:09:46,346 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-26 02:09:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:46,346 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-26 02:09:46,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:09:46,347 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-26 02:09:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:09:46,349 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:46,350 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:46,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:09:46,569 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-26 02:09:46,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:09:46,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376444643] [2019-11-26 02:09:46,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-26 02:09:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:46,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:09:46,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:09:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:46,651 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:09:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:46,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376444643] [2019-11-26 02:09:46,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:46,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:09:46,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935561545] [2019-11-26 02:09:46,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:09:46,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:09:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:09:46,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:09:46,677 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-26 02:09:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:46,805 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-26 02:09:46,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:09:46,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:09:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:46,811 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:09:46,811 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:09:46,811 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:09:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:09:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-26 02:09:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:09:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-26 02:09:46,818 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-26 02:09:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:46,818 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-26 02:09:46,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:09:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-26 02:09:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:09:46,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:46,820 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:47,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:09:47,039 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-26 02:09:47,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:09:47,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717373565] [2019-11-26 02:09:47,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-26 02:09:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:47,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:09:47,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:09:47,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:09:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:47,227 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:09:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:47,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717373565] [2019-11-26 02:09:47,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:47,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-26 02:09:47,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286881070] [2019-11-26 02:09:47,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:09:47,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:09:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:09:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:09:47,323 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-26 02:09:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:47,632 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-26 02:09:47,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:09:47,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-26 02:09:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:47,633 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:09:47,633 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:09:47,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:09:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:09:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-26 02:09:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:09:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-26 02:09:47,637 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-26 02:09:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:47,638 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-26 02:09:47,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:09:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-26 02:09:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:09:47,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:09:47,639 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:09:47,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:09:47,840 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:09:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:09:47,840 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-26 02:09:47,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:09:47,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655882215] [2019-11-26 02:09:47,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-26 02:09:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:09:47,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:09:47,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:09:47,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:09:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:47,989 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:09:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:09:48,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655882215] [2019-11-26 02:09:48,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:09:48,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:09:48,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047085839] [2019-11-26 02:09:48,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:09:48,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:09:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:09:48,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:09:48,057 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-26 02:09:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:09:48,266 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-26 02:09:48,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:09:48,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-26 02:09:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:09:48,267 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:09:48,267 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:09:48,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:09:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:09:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:09:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:09:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:09:48,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-26 02:09:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:09:48,269 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:09:48,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:09:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:09:48,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:09:48,471 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:09:48,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:09:48,683 INFO L440 ceAbstractionStarter]: At program point L31(lines 11 32) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-26 02:09:48,683 INFO L440 ceAbstractionStarter]: At program point L31-1(lines 11 32) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0))) [2019-11-26 02:09:48,684 INFO L440 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2019-11-26 02:09:48,684 INFO L440 ceAbstractionStarter]: At program point L40-3(lines 34 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2019-11-26 02:09:48,684 INFO L444 ceAbstractionStarter]: For program point L28-1(lines 28 31) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L25-1(lines 25 31) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L447 ceAbstractionStarter]: At program point L63(lines 46 64) the Hoare annotation is: true [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L22-1(lines 22 31) no Hoare annotation was computed. [2019-11-26 02:09:48,685 INFO L444 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-26 02:09:48,686 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-26 02:09:48,686 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2019-11-26 02:09:48,686 INFO L444 ceAbstractionStarter]: For program point L14-5(lines 14 18) no Hoare annotation was computed. [2019-11-26 02:09:48,686 INFO L440 ceAbstractionStarter]: At program point L14-6(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-26 02:09:48,686 INFO L444 ceAbstractionStarter]: For program point L14-7(lines 11 32) no Hoare annotation was computed. [2019-11-26 02:09:48,686 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-11-26 02:09:48,694 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:09:48,695 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:09:48,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:09:48,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:09:48,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:09:48 BoogieIcfgContainer [2019-11-26 02:09:48,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:09:48,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:09:48,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:09:48,701 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:09:48,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:09:44" (3/4) ... [2019-11-26 02:09:48,706 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:09:48,719 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:09:48,719 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:09:48,719 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:09:48,741 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2019-11-26 02:09:48,741 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) [2019-11-26 02:09:48,742 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) [2019-11-26 02:09:48,785 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_910eed0b-d863-4c2f-bea5-ae4d3757cbb0/bin/utaipan/witness.graphml [2019-11-26 02:09:48,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:09:48,787 INFO L168 Benchmark]: Toolchain (without parser) took 4792.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 955.1 MB in the beginning and 903.2 MB in the end (delta: 51.9 MB). Peak memory consumption was 198.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:48,787 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:09:48,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.16 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:48,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:48,788 INFO L168 Benchmark]: Boogie Preprocessor took 49.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:09:48,789 INFO L168 Benchmark]: RCFGBuilder took 408.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:48,790 INFO L168 Benchmark]: TraceAbstraction took 3876.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 903.2 MB in the end (delta: 202.9 MB). Peak memory consumption was 202.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:09:48,791 INFO L168 Benchmark]: Witness Printer took 84.92 ms. Allocated memory is still 1.2 GB. Free memory is still 903.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:09:48,795 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.16 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 408.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3876.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 903.2 MB in the end (delta: 202.9 MB). Peak memory consumption was 202.9 MB. Max. memory is 11.5 GB. * Witness Printer took 84.92 ms. Allocated memory is still 1.2 GB. Free memory is still 903.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2019-11-26 02:09:48,801 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:09:48,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2019-11-26 02:09:48,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:09:48,803 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...