./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/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 fa5701cbf2aecb18d72b6e5744b88307065d31ab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/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 fa5701cbf2aecb18d72b6e5744b88307065d31ab ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-cad4683 [2019-10-22 11:25:48,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:48,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:48,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:48,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:48,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:48,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:48,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:48,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:48,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:48,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:48,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:48,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:48,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:48,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:48,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:48,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:48,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:48,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:48,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:48,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:48,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:48,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:48,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:48,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:48,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:48,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:48,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:48,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:48,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:48,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:48,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:48,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:48,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:48,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:48,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:48,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:48,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:48,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:48,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:48,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:48,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:48,790 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:48,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:48,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:48,801 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:48,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:48,802 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:48,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:48,802 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:48,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:48,803 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:48,803 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:48,803 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:48,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:48,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:48,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:48,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:48,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:48,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:48,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:48,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:48,805 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:48,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:48,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:48,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:48,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:48,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:48,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:48,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:48,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:48,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:48,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:48,809 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:48,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:48,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:48,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:48,810 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/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-10-22 11:25:48,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:48,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:48,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:48,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:48,868 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:48,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 11:25:48,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/25743ac44/d504c14fc7514f38bdba00a4d3ce5426/FLAG849b056e3 [2019-10-22 11:25:49,336 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:49,337 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 11:25:49,343 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/25743ac44/d504c14fc7514f38bdba00a4d3ce5426/FLAG849b056e3 [2019-10-22 11:25:49,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/25743ac44/d504c14fc7514f38bdba00a4d3ce5426 [2019-10-22 11:25:49,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:49,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:49,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:49,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:49,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:49,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:49" (1/1) ... [2019-10-22 11:25:49,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef95cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:49, skipping insertion in model container [2019-10-22 11:25:49,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:49" (1/1) ... [2019-10-22 11:25:49,736 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:49,763 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:50,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,055 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:50,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,131 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:50,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50 WrapperNode [2019-10-22 11:25:50,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:50,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:50,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:50,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:50,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:50,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:50,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:50,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:50,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/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 [2019-10-22 11:25:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:50,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:50,847 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:50,847 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-10-22 11:25:50,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:50 BoogieIcfgContainer [2019-10-22 11:25:50,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:50,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:50,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:50,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:50,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:49" (1/3) ... [2019-10-22 11:25:50,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cd99bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:50, skipping insertion in model container [2019-10-22 11:25:50,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (2/3) ... [2019-10-22 11:25:50,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cd99bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:50, skipping insertion in model container [2019-10-22 11:25:50,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:50" (3/3) ... [2019-10-22 11:25:50,857 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-10-22 11:25:50,868 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:50,877 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 11:25:50,890 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 11:25:50,915 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:50,915 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:50,915 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:50,916 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:50,916 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:50,916 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:50,916 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:50,916 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-10-22 11:25:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:25:50,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:50,938 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:50,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-10-22 11:25:50,953 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:50,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955318438] [2019-10-22 11:25:50,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:50,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:50,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:51,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955318438] [2019-10-22 11:25:51,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:51,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211695174] [2019-10-22 11:25:51,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:51,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:51,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:51,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:51,380 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-10-22 11:25:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:52,033 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-10-22 11:25:52,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 11:25:52,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-22 11:25:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:52,053 INFO L225 Difference]: With dead ends: 269 [2019-10-22 11:25:52,054 INFO L226 Difference]: Without dead ends: 170 [2019-10-22 11:25:52,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-10-22 11:25:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-22 11:25:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-10-22 11:25:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-22 11:25:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-10-22 11:25:52,128 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-10-22 11:25:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:52,128 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-10-22 11:25:52,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-10-22 11:25:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:25:52,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,130 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:52,130 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-10-22 11:25:52,131 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:52,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781042904] [2019-10-22 11:25:52,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:52,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:52,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:52,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781042904] [2019-10-22 11:25:52,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:52,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:52,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024808396] [2019-10-22 11:25:52,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:52,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:52,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:52,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:52,369 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-10-22 11:25:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:52,643 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-10-22 11:25:52,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:25:52,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-22 11:25:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:52,646 INFO L225 Difference]: With dead ends: 183 [2019-10-22 11:25:52,646 INFO L226 Difference]: Without dead ends: 154 [2019-10-22 11:25:52,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:25:52,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-22 11:25:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-10-22 11:25:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-10-22 11:25:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-10-22 11:25:52,660 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-10-22 11:25:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:52,661 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-10-22 11:25:52,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-10-22 11:25:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:52,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,662 INFO L380 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] [2019-10-22 11:25:52,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-10-22 11:25:52,663 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:52,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205170380] [2019-10-22 11:25:52,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:52,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:52,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:52,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205170380] [2019-10-22 11:25:52,986 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:52,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-22 11:25:52,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919252843] [2019-10-22 11:25:52,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 11:25:52,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:52,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 11:25:52,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:25:52,988 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-10-22 11:25:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,137 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-10-22 11:25:54,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-22 11:25:54,137 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-10-22 11:25:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,139 INFO L225 Difference]: With dead ends: 225 [2019-10-22 11:25:54,139 INFO L226 Difference]: Without dead ends: 221 [2019-10-22 11:25:54,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-10-22 11:25:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-10-22 11:25:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-10-22 11:25:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:25:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-10-22 11:25:54,150 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-10-22 11:25:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,150 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-10-22 11:25:54,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 11:25:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-10-22 11:25:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:54,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,151 INFO L380 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] [2019-10-22 11:25:54,151 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,152 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-10-22 11:25:54,152 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:54,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546487493] [2019-10-22 11:25:54,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:54,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546487493] [2019-10-22 11:25:54,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:54,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:54,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630626427] [2019-10-22 11:25:54,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:54,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:54,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:54,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:54,277 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-10-22 11:25:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,448 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-10-22 11:25:54,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:25:54,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-22 11:25:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,450 INFO L225 Difference]: With dead ends: 171 [2019-10-22 11:25:54,450 INFO L226 Difference]: Without dead ends: 146 [2019-10-22 11:25:54,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:25:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-10-22 11:25:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-10-22 11:25:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-22 11:25:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-10-22 11:25:54,458 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-10-22 11:25:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,459 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-10-22 11:25:54,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-10-22 11:25:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:54,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,460 INFO L380 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] [2019-10-22 11:25:54,460 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,460 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-10-22 11:25:54,460 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:54,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933053894] [2019-10-22 11:25:54,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:54,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933053894] [2019-10-22 11:25:54,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:54,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:25:54,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517472981] [2019-10-22 11:25:54,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:54,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:54,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:54,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:54,584 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-10-22 11:25:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,739 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-10-22 11:25:54,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:25:54,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-22 11:25:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,741 INFO L225 Difference]: With dead ends: 157 [2019-10-22 11:25:54,741 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 11:25:54,742 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:25:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 11:25:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-10-22 11:25:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-22 11:25:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-10-22 11:25:54,754 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-10-22 11:25:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,755 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-10-22 11:25:54,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-10-22 11:25:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:54,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,756 INFO L380 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] [2019-10-22 11:25:54,756 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,756 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-10-22 11:25:54,756 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:54,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751743754] [2019-10-22 11:25:54,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:54,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:54,845 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:25:54,845 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:54,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:54 BoogieIcfgContainer [2019-10-22 11:25:54,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:54,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:54,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:54,870 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:54,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:50" (3/4) ... [2019-10-22 11:25:54,875 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:25:54,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:54,877 INFO L168 Benchmark]: Toolchain (without parser) took 5159.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.0 MB in the beginning and 899.6 MB in the end (delta: 45.4 MB). Peak memory consumption was 186.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:54,878 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:54,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:54,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.32 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. [2019-10-22 11:25:54,879 INFO L168 Benchmark]: Boogie Preprocessor took 34.78 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. [2019-10-22 11:25:54,880 INFO L168 Benchmark]: RCFGBuilder took 631.01 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:54,880 INFO L168 Benchmark]: TraceAbstraction took 4019.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.6 MB in the end (delta: 196.2 MB). Peak memory consumption was 196.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:54,880 INFO L168 Benchmark]: Witness Printer took 5.71 ms. Allocated memory is still 1.2 GB. Free memory is still 899.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:54,884 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 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.32 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 34.78 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 631.01 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4019.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.6 MB in the end (delta: 196.2 MB). Peak memory consumption was 196.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.71 ms. Allocated memory is still 1.2 GB. Free memory is still 899.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=1, 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, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 8117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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-cad4683 [2019-10-22 11:25:56,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:56,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:56,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:56,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:56,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:56,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:56,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:56,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:56,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:56,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:56,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:56,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:56,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:56,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:56,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:56,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:56,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:56,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:56,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:56,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:56,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:56,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:56,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:56,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:56,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:56,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:56,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:56,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:56,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:56,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:56,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:56,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:56,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:56,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:56,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:56,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:56,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:56,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:56,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:56,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:56,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:56,866 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:56,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:56,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:56,867 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:56,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:56,867 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:56,867 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:56,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:56,867 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:56,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:56,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:56,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:56,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:56,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:56,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:56,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:56,869 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:56,869 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:56,869 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:56,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:56,870 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:56,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:56,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:56,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:56,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:56,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:56,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:56,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:56,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:56,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:56,871 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:56,872 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:56,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:56,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:56,872 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/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-10-22 11:25:56,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:56,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:56,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:56,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:56,915 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:56,916 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 11:25:56,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/5d2350d0e/4c1071bd1dbb45efb4378a6ab184d335/FLAG23a922a63 [2019-10-22 11:25:57,418 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:57,418 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 11:25:57,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/5d2350d0e/4c1071bd1dbb45efb4378a6ab184d335/FLAG23a922a63 [2019-10-22 11:25:57,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/data/5d2350d0e/4c1071bd1dbb45efb4378a6ab184d335 [2019-10-22 11:25:57,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:57,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:57,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:57,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:57,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:57,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:57" (1/1) ... [2019-10-22 11:25:57,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c86f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:57, skipping insertion in model container [2019-10-22 11:25:57,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:57" (1/1) ... [2019-10-22 11:25:57,797 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:57,821 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:58,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:58,077 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:58,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:58,234 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:58,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58 WrapperNode [2019-10-22 11:25:58,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:58,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:58,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:58,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:58,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:58,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:58,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:58,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:58,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... [2019-10-22 11:25:58,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:58,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:58,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:58,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:58,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/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 [2019-10-22 11:25:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:58,900 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:58,901 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-10-22 11:25:58,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:58 BoogieIcfgContainer [2019-10-22 11:25:58,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:58,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:58,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:58,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:58,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:57" (1/3) ... [2019-10-22 11:25:58,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba34124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:58, skipping insertion in model container [2019-10-22 11:25:58,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:58" (2/3) ... [2019-10-22 11:25:58,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba34124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:58, skipping insertion in model container [2019-10-22 11:25:58,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:58" (3/3) ... [2019-10-22 11:25:58,911 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-10-22 11:25:58,919 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:58,926 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 11:25:58,935 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 11:25:58,961 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:58,961 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:58,961 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:58,961 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:58,961 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:58,961 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:58,961 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:58,961 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-10-22 11:25:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:25:58,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:58,983 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:58,986 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:58,994 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-10-22 11:25:59,002 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:59,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [204161746] [2019-10-22 11:25:59,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:59,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:59,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:59,184 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:59,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204161746] [2019-10-22 11:25:59,202 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:59,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-10-22 11:25:59,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150051953] [2019-10-22 11:25:59,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:25:59,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:59,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:25:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:25:59,229 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 7 states. [2019-10-22 11:25:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:59,698 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2019-10-22 11:25:59,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:25:59,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-10-22 11:25:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:59,716 INFO L225 Difference]: With dead ends: 284 [2019-10-22 11:25:59,716 INFO L226 Difference]: Without dead ends: 184 [2019-10-22 11:25:59,723 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:25:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-10-22 11:25:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-10-22 11:25:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:25:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-10-22 11:25:59,787 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 14 [2019-10-22 11:25:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:59,787 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-10-22 11:25:59,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:25:59,787 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-10-22 11:25:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:59,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:59,789 INFO L380 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] [2019-10-22 11:25:59,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:59,991 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:59,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-10-22 11:25:59,992 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:59,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [374168598] [2019-10-22 11:25:59,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:00,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:26:00,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:00,129 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:00,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374168598] [2019-10-22 11:26:00,176 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:00,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-10-22 11:26:00,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927446677] [2019-10-22 11:26:00,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:26:00,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:26:00,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:00,180 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-10-22 11:26:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:00,455 INFO L93 Difference]: Finished difference Result 190 states and 240 transitions. [2019-10-22 11:26:00,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:26:00,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-10-22 11:26:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:00,459 INFO L225 Difference]: With dead ends: 190 [2019-10-22 11:26:00,459 INFO L226 Difference]: Without dead ends: 165 [2019-10-22 11:26:00,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:26:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-22 11:26:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2019-10-22 11:26:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-22 11:26:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2019-10-22 11:26:00,476 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 22 [2019-10-22 11:26:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:00,476 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2019-10-22 11:26:00,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:26:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2019-10-22 11:26:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:26:00,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:00,478 INFO L380 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] [2019-10-22 11:26:00,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:00,681 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:00,681 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-10-22 11:26:00,682 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:00,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [410075439] [2019-10-22 11:26:00,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:00,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:26:00,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:00,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:00,818 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:00,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [410075439] [2019-10-22 11:26:00,851 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:00,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:26:00,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932004453] [2019-10-22 11:26:00,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:00,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:00,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:00,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:00,853 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand 6 states. [2019-10-22 11:26:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:01,056 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2019-10-22 11:26:01,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:01,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 11:26:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:01,058 INFO L225 Difference]: With dead ends: 177 [2019-10-22 11:26:01,058 INFO L226 Difference]: Without dead ends: 173 [2019-10-22 11:26:01,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-22 11:26:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2019-10-22 11:26:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-22 11:26:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2019-10-22 11:26:01,071 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 22 [2019-10-22 11:26:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:01,071 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2019-10-22 11:26:01,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2019-10-22 11:26:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:26:01,073 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:01,073 INFO L380 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, 1, 1] [2019-10-22 11:26:01,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:01,274 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:01,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:01,274 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-10-22 11:26:01,275 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:01,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [715438230] [2019-10-22 11:26:01,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:01,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:26:01,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:01,375 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:01,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [715438230] [2019-10-22 11:26:01,395 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:01,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-10-22 11:26:01,396 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295661518] [2019-10-22 11:26:01,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:26:01,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:01,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:26:01,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:01,397 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand 9 states. [2019-10-22 11:26:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:01,722 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2019-10-22 11:26:01,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 11:26:01,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-10-22 11:26:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:01,724 INFO L225 Difference]: With dead ends: 173 [2019-10-22 11:26:01,724 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 11:26:01,724 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-10-22 11:26:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 11:26:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 120. [2019-10-22 11:26:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:26:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2019-10-22 11:26:01,738 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 24 [2019-10-22 11:26:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:01,738 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2019-10-22 11:26:01,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:26:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2019-10-22 11:26:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:26:01,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:01,739 INFO L380 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, 1, 1] [2019-10-22 11:26:01,940 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:01,942 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:01,942 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-10-22 11:26:01,942 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:01,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [975319681] [2019-10-22 11:26:01,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:02,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:02,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:02,021 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:02,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [975319681] [2019-10-22 11:26:02,051 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:02,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-10-22 11:26:02,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565440477] [2019-10-22 11:26:02,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:02,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:02,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:02,052 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand 6 states. [2019-10-22 11:26:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:02,156 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2019-10-22 11:26:02,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:02,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-22 11:26:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:02,157 INFO L225 Difference]: With dead ends: 137 [2019-10-22 11:26:02,157 INFO L226 Difference]: Without dead ends: 118 [2019-10-22 11:26:02,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-22 11:26:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-10-22 11:26:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-22 11:26:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2019-10-22 11:26:02,167 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 24 [2019-10-22 11:26:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:02,167 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2019-10-22 11:26:02,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2019-10-22 11:26:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:26:02,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:02,169 INFO L380 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, 1, 1] [2019-10-22 11:26:02,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:02,370 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-10-22 11:26:02,370 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:02,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1889516324] [2019-10-22 11:26:02,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:02,594 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:02,594 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:02,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:02,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:02 BoogieIcfgContainer [2019-10-22 11:26:02,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:02,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:02,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:02,826 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:02,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:58" (3/4) ... [2019-10-22 11:26:02,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:02,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_db10a5df-207f-4d4e-b4e6-5a13f719a570/bin/utaipan/witness.graphml [2019-10-22 11:26:02,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:02,901 INFO L168 Benchmark]: Toolchain (without parser) took 5121.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 953.7 MB in the beginning and 1.2 GB in the end (delta: -245.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:02,904 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:02,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 953.7 MB in the beginning and 1.2 GB in the end (delta: -200.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:02,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.43 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:02,905 INFO L168 Benchmark]: Boogie Preprocessor took 38.51 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. [2019-10-22 11:26:02,905 INFO L168 Benchmark]: RCFGBuilder took 585.13 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: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:02,906 INFO L168 Benchmark]: TraceAbstraction took 3921.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -96.3 MB). Peak memory consumption was 278.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:02,906 INFO L168 Benchmark]: Witness Printer took 71.92 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:02,910 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 456.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 953.7 MB in the beginning and 1.2 GB in the end (delta: -200.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.43 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.51 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 585.13 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: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3921.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -96.3 MB). Peak memory consumption was 278.6 MB. Max. memory is 11.5 GB. * Witness Printer took 71.92 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 555 SDtfs, 756 SDslu, 2473 SDs, 0 SdLazy, 427 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, 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, 5 MinimizatonAttempts, 239 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 7672 SizeOfPredicates, 35 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...