./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................ 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_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:59:12,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:59:12,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:59:12,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:59:12,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:59:12,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:59:12,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:59:12,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:59:12,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:59:12,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:59:12,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:59:12,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:59:12,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:59:12,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:59:12,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:59:12,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:59:12,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:59:12,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:59:12,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:59:12,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:59:12,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:59:12,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:59:12,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:59:12,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:59:12,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:59:12,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:59:12,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:59:12,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:59:12,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:59:12,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:59:12,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:59:12,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:59:12,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:59:12,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:59:12,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:59:12,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:59:12,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:59:12,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:59:12,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:59:12,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:59:12,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:59:12,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:59:12,976 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:59:12,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:59:12,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:59:12,977 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:59:12,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:59:12,977 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:59:12,977 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:59:12,977 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:59:12,977 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:59:12,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:59:12,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:59:12,978 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:59:12,978 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:59:12,978 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:59:12,979 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:59:12,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:59:12,979 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:59:12,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:59:12,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:59:12,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:59:12,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:59:12,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:59:12,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:59:12,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:59:12,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:59:12,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:59:12,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:59:12,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:59:12,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:59:12,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:59:12,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:59:12,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:59:12,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:59:12,983 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:59:12,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:59:12,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:59:12,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:59:12,983 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_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-26 02:59:13,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:59:13,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:59:13,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:59:13,153 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:59:13,153 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:59:13,154 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-26 02:59:13,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/799e75e7f/945acfa7eaca4101aa3e6b9fe8a0b322/FLAG774d31554 [2019-11-26 02:59:13,606 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:59:13,608 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-26 02:59:13,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/799e75e7f/945acfa7eaca4101aa3e6b9fe8a0b322/FLAG774d31554 [2019-11-26 02:59:13,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/799e75e7f/945acfa7eaca4101aa3e6b9fe8a0b322 [2019-11-26 02:59:13,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:59:13,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:59:13,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:13,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:59:13,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:59:13,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:13" (1/1) ... [2019-11-26 02:59:13,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ed7d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:13, skipping insertion in model container [2019-11-26 02:59:13,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:13" (1/1) ... [2019-11-26 02:59:13,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:59:13,670 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:59:13,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:13,964 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:59:13,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:14,013 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:59:14,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14 WrapperNode [2019-11-26 02:59:14,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:14,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:14,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:59:14,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:59:14,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:14,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:59:14,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:59:14,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:59:14,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... [2019-11-26 02:59:14,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:59:14,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:59:14,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:59:14,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:59:14,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:59:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:59:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:59:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:59:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:59:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:59:14,685 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:59:14,686 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:59:14,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:14 BoogieIcfgContainer [2019-11-26 02:59:14,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:59:14,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:59:14,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:59:14,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:59:14,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:59:13" (1/3) ... [2019-11-26 02:59:14,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cacc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:14, skipping insertion in model container [2019-11-26 02:59:14,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:14" (2/3) ... [2019-11-26 02:59:14,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cacc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:14, skipping insertion in model container [2019-11-26 02:59:14,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:14" (3/3) ... [2019-11-26 02:59:14,694 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-26 02:59:14,702 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:59:14,707 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:59:14,716 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:59:14,736 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:59:14,736 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:59:14,736 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:59:14,736 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:59:14,737 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:59:14,737 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:59:14,737 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:59:14,737 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:59:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:59:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:59:14,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:14,754 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:14,754 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:14,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2019-11-26 02:59:14,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:14,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517072046] [2019-11-26 02:59:14,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:14,860 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 02:59:14,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517072046] [2019-11-26 02:59:14,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:14,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:59:14,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316782824] [2019-11-26 02:59:14,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:59:14,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:59:14,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:59:14,878 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-26 02:59:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:14,890 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2019-11-26 02:59:14,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:59:14,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:59:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:14,899 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:59:14,899 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:59:14,902 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 02:59:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:59:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:59:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:59:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-26 02:59:14,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2019-11-26 02:59:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:14,927 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-26 02:59:14,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:59:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-26 02:59:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:59:14,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:14,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:14,928 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:14,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2019-11-26 02:59:14,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:14,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461698908] [2019-11-26 02:59:14,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:59:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:59:15,014 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:59:15,014 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:59:15,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:59:15 BoogieIcfgContainer [2019-11-26 02:59:15,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:59:15,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:59:15,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:59:15,039 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:59:15,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:14" (3/4) ... [2019-11-26 02:59:15,042 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:59:15,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:59:15,044 INFO L168 Benchmark]: Toolchain (without parser) took 1413.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -106.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:15,045 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:15,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:15,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.00 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:15,047 INFO L168 Benchmark]: Boogie Preprocessor took 26.47 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 02:59:15,047 INFO L168 Benchmark]: RCFGBuilder took 606.87 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:15,048 INFO L168 Benchmark]: TraceAbstraction took 350.50 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:15,048 INFO L168 Benchmark]: Witness Printer took 3.92 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 02:59:15,051 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 378.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.00 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.47 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 606.87 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 350.50 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.92 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: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 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=18occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 02:59:16,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:59:16,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:59:16,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:59:16,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:59:16,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:59:16,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:59:16,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:59:16,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:59:16,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:59:16,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:59:16,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:59:16,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:59:16,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:59:16,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:59:16,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:59:16,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:59:16,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:59:16,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:59:16,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:59:16,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:59:16,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:59:16,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:59:16,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:59:17,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:59:17,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:59:17,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:59:17,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:59:17,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:59:17,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:59:17,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:59:17,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:59:17,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:59:17,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:59:17,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:59:17,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:59:17,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:59:17,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:59:17,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:59:17,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:59:17,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:59:17,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:59:17,034 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:59:17,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:59:17,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:59:17,035 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:59:17,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:59:17,036 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:59:17,036 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:59:17,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:59:17,036 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:59:17,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:59:17,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:59:17,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:59:17,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:59:17,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:59:17,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:59:17,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:59:17,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:59:17,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:59:17,039 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:59:17,039 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:59:17,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:59:17,039 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:59:17,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:59:17,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:59:17,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:59:17,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:59:17,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:59:17,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:59:17,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:59:17,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:59:17,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:59:17,041 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:59:17,041 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:59:17,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:59:17,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:59:17,041 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_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-26 02:59:17,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:59:17,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:59:17,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:59:17,307 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:59:17,307 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:59:17,308 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-26 02:59:17,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/c6b6dd8e8/393e1f944cdc4ec4b5786118f562a065/FLAG59c6894bc [2019-11-26 02:59:17,788 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:59:17,789 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-26 02:59:17,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/c6b6dd8e8/393e1f944cdc4ec4b5786118f562a065/FLAG59c6894bc [2019-11-26 02:59:17,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/data/c6b6dd8e8/393e1f944cdc4ec4b5786118f562a065 [2019-11-26 02:59:17,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:59:17,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:59:17,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:17,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:59:17,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:59:17,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:17" (1/1) ... [2019-11-26 02:59:17,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2769047b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:17, skipping insertion in model container [2019-11-26 02:59:17,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:17" (1/1) ... [2019-11-26 02:59:17,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:59:17,851 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:59:18,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:18,078 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:59:18,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:18,209 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:59:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18 WrapperNode [2019-11-26 02:59:18,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:18,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:18,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:59:18,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:59:18,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:18,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:59:18,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:59:18,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:59:18,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... [2019-11-26 02:59:18,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:59:18,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:59:18,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:59:18,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:59:18,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-26 02:59:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:59:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:59:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:59:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:59:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:59:18,792 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:59:18,792 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:59:18,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:18 BoogieIcfgContainer [2019-11-26 02:59:18,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:59:18,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:59:18,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:59:18,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:59:18,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:59:17" (1/3) ... [2019-11-26 02:59:18,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5733d3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:18, skipping insertion in model container [2019-11-26 02:59:18,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:18" (2/3) ... [2019-11-26 02:59:18,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5733d3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:18, skipping insertion in model container [2019-11-26 02:59:18,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:18" (3/3) ... [2019-11-26 02:59:18,799 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-26 02:59:18,806 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:59:18,813 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:59:18,822 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:59:18,841 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:59:18,842 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:59:18,842 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:59:18,842 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:59:18,842 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:59:18,842 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:59:18,842 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:59:18,842 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:59:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-26 02:59:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:59:18,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:18,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:18,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:18,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-26 02:59:18,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:18,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873931455] [2019-11-26 02:59:18,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:18,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:59:18,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:18,984 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 02:59:18,984 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:18,989 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 02:59:18,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873931455] [2019-11-26 02:59:18,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:18,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:59:18,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424378937] [2019-11-26 02:59:18,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:59:18,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:19,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:59:19,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:59:19,011 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-26 02:59:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:19,025 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-26 02:59:19,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:59:19,026 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:59:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:19,036 INFO L225 Difference]: With dead ends: 62 [2019-11-26 02:59:19,036 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:59:19,039 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 02:59:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:59:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-26 02:59:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:59:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-26 02:59:19,066 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-26 02:59:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:19,066 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-26 02:59:19,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:59:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-26 02:59:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:59:19,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:19,067 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:19,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:59:19,267 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-26 02:59:19,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:19,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397776726] [2019-11-26 02:59:19,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:19,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:59:19,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:19,399 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 02:59:19,399 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:19,431 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 02:59:19,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397776726] [2019-11-26 02:59:19,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:19,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:59:19,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414830374] [2019-11-26 02:59:19,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:59:19,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:19,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:59:19,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:59:19,434 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-26 02:59:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:19,546 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-26 02:59:19,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:59:19,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:59:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:19,548 INFO L225 Difference]: With dead ends: 68 [2019-11-26 02:59:19,548 INFO L226 Difference]: Without dead ends: 59 [2019-11-26 02:59:19,550 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 02:59:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-26 02:59:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-26 02:59:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-26 02:59:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-26 02:59:19,557 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-26 02:59:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:19,558 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-26 02:59:19,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:59:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-26 02:59:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:59:19,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:19,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:19,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:59:19,773 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:19,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:19,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-26 02:59:19,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:19,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560435421] [2019-11-26 02:59:19,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:19,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:59:19,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:19,884 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 02:59:19,884 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:19,928 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 02:59:19,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560435421] [2019-11-26 02:59:19,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:19,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:59:19,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825290237] [2019-11-26 02:59:19,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:59:19,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:19,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:59:19,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:59:19,931 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-26 02:59:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:20,040 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-26 02:59:20,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:59:20,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-26 02:59:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:20,042 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:59:20,042 INFO L226 Difference]: Without dead ends: 28 [2019-11-26 02:59:20,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:59:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-26 02:59:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-26 02:59:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:59:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-26 02:59:20,047 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-26 02:59:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:20,048 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-26 02:59:20,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:59:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-26 02:59:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:59:20,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:20,049 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:20,265 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:59:20,265 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-26 02:59:20,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:20,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96896475] [2019-11-26 02:59:20,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:20,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:59:20,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:20,399 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 02:59:20,399 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:20,416 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 02:59:20,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96896475] [2019-11-26 02:59:20,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:20,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:59:20,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363794842] [2019-11-26 02:59:20,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:59:20,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:20,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:59:20,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:59:20,419 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-26 02:59:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:20,509 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-26 02:59:20,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:59:20,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:59:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:20,511 INFO L225 Difference]: With dead ends: 65 [2019-11-26 02:59:20,511 INFO L226 Difference]: Without dead ends: 56 [2019-11-26 02:59:20,511 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 02:59:20,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-26 02:59:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-26 02:59:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:59:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-26 02:59:20,517 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-26 02:59:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:20,517 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-26 02:59:20,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:59:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-26 02:59:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:59:20,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:20,518 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 02:59:20,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:59:20,732 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:20,732 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-26 02:59:20,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:20,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16534818] [2019-11-26 02:59:20,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:20,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:59:20,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:20,860 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 02:59:20,861 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:20,907 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 02:59:20,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16534818] [2019-11-26 02:59:20,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:20,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:59:20,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904600176] [2019-11-26 02:59:20,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:59:20,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:20,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:59:20,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:59:20,910 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-26 02:59:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:20,931 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-26 02:59:20,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:59:20,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-26 02:59:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:20,934 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:59:20,934 INFO L226 Difference]: Without dead ends: 30 [2019-11-26 02:59:20,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:59:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-26 02:59:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-26 02:59:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:59:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-26 02:59:20,939 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-26 02:59:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:20,940 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-26 02:59:20,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:59:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-26 02:59:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:59:20,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:20,943 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 02:59:21,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:59:21,144 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-26 02:59:21,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:21,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184907856] [2019-11-26 02:59:21,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/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 02:59:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:21,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:59:21,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:21,299 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 02:59:21,299 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:21,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:21,354 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 02:59:21,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184907856] [2019-11-26 02:59:21,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:21,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:59:21,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292819889] [2019-11-26 02:59:21,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:59:21,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:21,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:59:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:59:21,356 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-26 02:59:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:21,475 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-26 02:59:21,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:59:21,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-26 02:59:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:21,477 INFO L225 Difference]: With dead ends: 42 [2019-11-26 02:59:21,477 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:59:21,478 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:59:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:59:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-26 02:59:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-26 02:59:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-26 02:59:21,483 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-26 02:59:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:21,483 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-26 02:59:21,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:59:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-26 02:59:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:59:21,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:21,485 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 02:59:21,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:59:21,698 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:21,698 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-26 02:59:21,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:21,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550530723] [2019-11-26 02:59:21,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-26 02:59:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:21,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:59:21,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:21,841 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 02:59:21,841 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:21,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:21,988 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 02:59:21,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550530723] [2019-11-26 02:59:21,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:21,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:59:21,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715297759] [2019-11-26 02:59:21,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:59:21,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:59:21,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:59:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:59:21,990 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-26 02:59:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:22,111 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-26 02:59:22,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:59:22,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-26 02:59:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:22,113 INFO L225 Difference]: With dead ends: 45 [2019-11-26 02:59:22,113 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:59:22,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:59:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:59:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-26 02:59:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:59:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-26 02:59:22,120 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-26 02:59:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:22,121 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-26 02:59:22,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:59:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-26 02:59:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:59:22,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:22,122 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:22,322 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-26 02:59:22,323 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:22,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:22,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-26 02:59:22,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:59:22,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191707670] [2019-11-26 02:59:22,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-26 02:59:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:59:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:59:22,656 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:59:22,656 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:59:22,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-26 02:59:22,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:59:22 BoogieIcfgContainer [2019-11-26 02:59:22,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:59:22,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:59:22,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:59:22,888 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:59:22,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:18" (3/4) ... [2019-11-26 02:59:22,891 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:59:22,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_453ceb4e-c1a5-4247-a614-cee8c06d3e98/bin/utaipan/witness.graphml [2019-11-26 02:59:22,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:59:22,952 INFO L168 Benchmark]: Toolchain (without parser) took 5138.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 956.4 MB in the beginning and 900.4 MB in the end (delta: 56.0 MB). Peak memory consumption was 216.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:22,952 INFO L168 Benchmark]: CDTParser took 0.21 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 02:59:22,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 956.4 MB in the beginning and 1.2 GB in the end (delta: -200.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:22,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.44 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:22,957 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 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 02:59:22,958 INFO L168 Benchmark]: RCFGBuilder took 506.50 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:22,958 INFO L168 Benchmark]: TraceAbstraction took 4093.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.4 MB in the end (delta: 222.8 MB). Peak memory consumption was 222.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:22,958 INFO L168 Benchmark]: Witness Printer took 61.89 ms. Allocated memory is still 1.2 GB. Free memory is still 900.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:22,961 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 394.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 956.4 MB in the beginning and 1.2 GB in the end (delta: -200.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.44 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 506.50 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4093.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.4 MB in the end (delta: 222.8 MB). Peak memory consumption was 222.8 MB. Max. memory is 11.5 GB. * Witness Printer took 61.89 ms. Allocated memory is still 1.2 GB. Free memory is still 900.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 incorrect! Received shutdown request...