./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 03:06:33,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:06:33,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:06:33,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:06:33,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:06:33,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:06:33,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:06:33,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:06:33,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:06:33,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:06:33,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:06:33,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:06:33,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:06:33,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:06:33,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:06:33,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:06:33,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:06:33,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:06:33,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:06:33,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:06:33,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:06:33,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:06:33,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:06:33,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:06:33,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:06:33,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:06:33,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:06:33,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:06:33,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:06:33,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:06:33,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:06:33,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:06:33,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:06:33,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:06:33,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:06:33,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:06:33,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:06:33,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:06:33,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:06:33,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:06:33,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:06:33,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:06:33,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:06:33,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:06:33,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:06:33,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:06:33,884 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:06:33,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:06:33,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:06:33,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:06:33,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:06:33,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:06:33,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:06:33,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:06:33,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:06:33,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:06:33,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:06:33,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:06:33,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:06:33,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:06:33,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:06:33,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:06:33,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:06:33,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:33,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:06:33,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:06:33,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:06:33,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:06:33,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:06:33,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:06:33,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:06:33,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-28 03:06:34,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:06:34,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:06:34,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:06:34,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:06:34,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:06:34,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 03:06:34,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/2c72a01b5/7dca7b8dc51049db8c6b0788532f8ae7/FLAGeb89adbf5 [2020-11-28 03:06:34,928 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:06:34,928 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 03:06:34,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/2c72a01b5/7dca7b8dc51049db8c6b0788532f8ae7/FLAGeb89adbf5 [2020-11-28 03:06:35,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/2c72a01b5/7dca7b8dc51049db8c6b0788532f8ae7 [2020-11-28 03:06:35,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:06:35,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:06:35,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:35,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:06:35,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:06:35,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d45d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35, skipping insertion in model container [2020-11-28 03:06:35,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:06:35,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:06:35,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:35,653 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:06:35,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:35,750 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:06:35,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35 WrapperNode [2020-11-28 03:06:35,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:35,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:35,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:06:35,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:06:35,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:35,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:06:35,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:06:35,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:06:35,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... [2020-11-28 03:06:35,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:06:35,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:06:35,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:06:35,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:06:35,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:06:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:06:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:06:36,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:06:36,888 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:06:36,889 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-28 03:06:36,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:36 BoogieIcfgContainer [2020-11-28 03:06:36,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:06:36,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:06:36,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:06:36,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:06:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:06:35" (1/3) ... [2020-11-28 03:06:36,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da9d5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:36, skipping insertion in model container [2020-11-28 03:06:36,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:35" (2/3) ... [2020-11-28 03:06:36,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da9d5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:36, skipping insertion in model container [2020-11-28 03:06:36,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:36" (3/3) ... [2020-11-28 03:06:36,904 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-28 03:06:36,925 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:06:36,931 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:06:36,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:06:36,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:06:36,974 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:06:36,974 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:06:36,974 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:06:36,974 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:06:36,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:06:36,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:06:36,975 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:06:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-28 03:06:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:06:37,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:37,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:37,012 INFO L429 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]=== [2020-11-28 03:06:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-28 03:06:37,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:37,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581061682] [2020-11-28 03:06:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:37,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581061682] [2020-11-28 03:06:37,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:37,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:06:37,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178884565] [2020-11-28 03:06:37,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:37,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:37,417 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 7 states. [2020-11-28 03:06:38,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:38,036 INFO L93 Difference]: Finished difference Result 280 states and 407 transitions. [2020-11-28 03:06:38,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:06:38,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-28 03:06:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:38,074 INFO L225 Difference]: With dead ends: 280 [2020-11-28 03:06:38,074 INFO L226 Difference]: Without dead ends: 181 [2020-11-28 03:06:38,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:06:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-28 03:06:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2020-11-28 03:06:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 03:06:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-28 03:06:38,192 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2020-11-28 03:06:38,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:38,193 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-28 03:06:38,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:38,193 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-28 03:06:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:06:38,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:38,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:38,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:06:38,196 INFO L429 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]=== [2020-11-28 03:06:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2020-11-28 03:06:38,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:38,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877899110] [2020-11-28 03:06:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:38,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877899110] [2020-11-28 03:06:38,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:38,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:06:38,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495496141] [2020-11-28 03:06:38,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:38,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:38,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:38,445 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-28 03:06:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:38,911 INFO L93 Difference]: Finished difference Result 214 states and 265 transitions. [2020-11-28 03:06:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:06:38,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:06:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:38,916 INFO L225 Difference]: With dead ends: 214 [2020-11-28 03:06:38,920 INFO L226 Difference]: Without dead ends: 185 [2020-11-28 03:06:38,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:06:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-28 03:06:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-28 03:06:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 03:06:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-28 03:06:38,951 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-28 03:06:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:38,953 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-28 03:06:38,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-28 03:06:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:38,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:38,957 INFO L422 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] [2020-11-28 03:06:38,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:06:38,960 INFO L429 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]=== [2020-11-28 03:06:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-28 03:06:38,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:38,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680430898] [2020-11-28 03:06:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:39,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680430898] [2020-11-28 03:06:39,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:39,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-28 03:06:39,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358990930] [2020-11-28 03:06:39,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:06:39,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:06:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:06:39,348 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 14 states. [2020-11-28 03:06:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:40,061 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2020-11-28 03:06:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:06:40,062 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-11-28 03:06:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:40,064 INFO L225 Difference]: With dead ends: 167 [2020-11-28 03:06:40,064 INFO L226 Difference]: Without dead ends: 162 [2020-11-28 03:06:40,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:06:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-28 03:06:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2020-11-28 03:06:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-28 03:06:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2020-11-28 03:06:40,081 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2020-11-28 03:06:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:40,082 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2020-11-28 03:06:40,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:06:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2020-11-28 03:06:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:40,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:40,084 INFO L422 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] [2020-11-28 03:06:40,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:06:40,085 INFO L429 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]=== [2020-11-28 03:06:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:40,086 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-28 03:06:40,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:40,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956973353] [2020-11-28 03:06:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:40,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956973353] [2020-11-28 03:06:40,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:40,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:06:40,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248802542] [2020-11-28 03:06:40,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:40,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:40,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:40,249 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand 7 states. [2020-11-28 03:06:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:40,465 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2020-11-28 03:06:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:40,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 03:06:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:40,467 INFO L225 Difference]: With dead ends: 183 [2020-11-28 03:06:40,467 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 03:06:40,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:06:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 03:06:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2020-11-28 03:06:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 03:06:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-11-28 03:06:40,491 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-11-28 03:06:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:40,491 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-11-28 03:06:40,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-11-28 03:06:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:40,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:40,493 INFO L422 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] [2020-11-28 03:06:40,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:06:40,497 INFO L429 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]=== [2020-11-28 03:06:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash 384893056, now seen corresponding path program 1 times [2020-11-28 03:06:40,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:40,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578672360] [2020-11-28 03:06:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:40,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578672360] [2020-11-28 03:06:40,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:40,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:06:40,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164487861] [2020-11-28 03:06:40,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:40,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:40,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:40,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:40,693 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 7 states. [2020-11-28 03:06:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:40,899 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2020-11-28 03:06:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:06:40,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 03:06:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:40,901 INFO L225 Difference]: With dead ends: 178 [2020-11-28 03:06:40,901 INFO L226 Difference]: Without dead ends: 153 [2020-11-28 03:06:40,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-28 03:06:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-11-28 03:06:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 03:06:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-11-28 03:06:40,927 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-11-28 03:06:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:40,928 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-11-28 03:06:40,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:40,928 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-11-28 03:06:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:40,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:40,932 INFO L422 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] [2020-11-28 03:06:40,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:06:40,933 INFO L429 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]=== [2020-11-28 03:06:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-28 03:06:40,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:40,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942238122] [2020-11-28 03:06:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:41,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942238122] [2020-11-28 03:06:41,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:41,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:06:41,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047992247] [2020-11-28 03:06:41,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:41,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:41,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:41,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:41,096 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 6 states. [2020-11-28 03:06:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:41,410 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2020-11-28 03:06:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:41,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-28 03:06:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:41,415 INFO L225 Difference]: With dead ends: 342 [2020-11-28 03:06:41,415 INFO L226 Difference]: Without dead ends: 296 [2020-11-28 03:06:41,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-11-28 03:06:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2020-11-28 03:06:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-28 03:06:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2020-11-28 03:06:41,444 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2020-11-28 03:06:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:41,449 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2020-11-28 03:06:41,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2020-11-28 03:06:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:41,455 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:41,458 INFO L422 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] [2020-11-28 03:06:41,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:06:41,459 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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]=== [2020-11-28 03:06:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:41,459 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-11-28 03:06:41,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:41,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424986454] [2020-11-28 03:06:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:06:41,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:06:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:06:41,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:06:41,627 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:06:41,627 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:06:41,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:06:41,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:06:41 BoogieIcfgContainer [2020-11-28 03:06:41,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:06:41,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:06:41,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:06:41,708 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:06:41,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:36" (3/4) ... [2020-11-28 03:06:41,713 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:06:41,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:06:41,717 INFO L168 Benchmark]: Toolchain (without parser) took 6450.60 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 67.9 MB in the beginning and 101.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:41,718 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 96.5 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:41,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.44 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 70.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:41,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.18 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 68.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:41,729 INFO L168 Benchmark]: Boogie Preprocessor took 82.25 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 66.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:41,730 INFO L168 Benchmark]: RCFGBuilder took 945.31 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 90.7 MB in the end (delta: -24.3 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:41,730 INFO L168 Benchmark]: TraceAbstraction took 4812.23 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 90.7 MB in the beginning and 102.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:41,734 INFO L168 Benchmark]: Witness Printer took 5.51 ms. Allocated memory is still 142.6 MB. Free memory was 102.0 MB in the beginning and 101.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:41,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 96.5 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.44 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 70.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 111.18 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 68.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.25 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 66.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 945.31 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 90.7 MB in the end (delta: -24.3 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4812.23 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 90.7 MB in the beginning and 102.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.51 ms. Allocated memory is still 142.6 MB. Free memory was 102.0 MB in the beginning and 101.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 716 SDtfs, 1334 SDslu, 3546 SDs, 0 SdLazy, 662 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 417 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-28 03:06:44,630 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 03:06:44,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:06:44,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:06:44,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:06:44,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:06:44,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:06:44,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:06:44,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:06:44,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:06:44,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:06:44,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:06:44,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:06:44,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:06:44,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:06:44,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:06:44,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:06:44,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:06:44,792 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:06:44,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:06:44,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:06:44,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:06:44,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:06:44,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:06:44,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:06:44,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:06:44,796 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:06:44,797 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:06:44,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:06:44,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:06:44,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:06:44,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:06:44,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:06:44,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:06:44,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:06:44,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:06:44,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:44,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:06:44,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:06:44,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:06:44,801 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:06:44,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:06:44,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:06:44,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:06:44,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:06:44,803 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-28 03:06:45,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:06:45,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:06:45,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:06:45,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:06:45,318 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:06:45,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 03:06:45,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/8d9d7e884/d8362fbb176f41df852c9653c0eb3106/FLAGea4a28f1c [2020-11-28 03:06:46,008 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:06:46,009 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 03:06:46,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/8d9d7e884/d8362fbb176f41df852c9653c0eb3106/FLAGea4a28f1c [2020-11-28 03:06:46,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/data/8d9d7e884/d8362fbb176f41df852c9653c0eb3106 [2020-11-28 03:06:46,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:06:46,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:06:46,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:46,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:06:46,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:06:46,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5d0ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46, skipping insertion in model container [2020-11-28 03:06:46,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:06:46,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:06:46,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:46,655 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:06:46,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:46,785 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:06:46,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46 WrapperNode [2020-11-28 03:06:46,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:46,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:46,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:06:46,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:06:46,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:46,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:06:46,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:06:46,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:06:46,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... [2020-11-28 03:06:46,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:06:46,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:06:46,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:06:46,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:06:46,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:06:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:06:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:06:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:06:47,972 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:06:47,973 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-28 03:06:47,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:47 BoogieIcfgContainer [2020-11-28 03:06:47,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:06:47,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:06:47,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:06:47,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:06:47,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:06:46" (1/3) ... [2020-11-28 03:06:47,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d71848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:47, skipping insertion in model container [2020-11-28 03:06:47,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:46" (2/3) ... [2020-11-28 03:06:47,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d71848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:47, skipping insertion in model container [2020-11-28 03:06:47,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:47" (3/3) ... [2020-11-28 03:06:47,990 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-28 03:06:48,003 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:06:48,009 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:06:48,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:06:48,071 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:06:48,072 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:06:48,073 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:06:48,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:06:48,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:06:48,073 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:06:48,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:06:48,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:06:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-28 03:06:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:06:48,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:48,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:48,110 INFO L429 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]=== [2020-11-28 03:06:48,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-28 03:06:48,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:48,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545087356] [2020-11-28 03:06:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:48,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:06:48,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:48,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:48,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545087356] [2020-11-28 03:06:48,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:48,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 03:06:48,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988569273] [2020-11-28 03:06:48,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:06:48,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:06:48,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:06:48,456 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-11-28 03:06:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:48,736 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-11-28 03:06:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:48,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:06:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:48,755 INFO L225 Difference]: With dead ends: 238 [2020-11-28 03:06:48,755 INFO L226 Difference]: Without dead ends: 139 [2020-11-28 03:06:48,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-28 03:06:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-11-28 03:06:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 03:06:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-28 03:06:48,846 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-11-28 03:06:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:48,847 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-28 03:06:48,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:06:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-28 03:06:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:06:48,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:48,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:49,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:06:49,066 INFO L429 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]=== [2020-11-28 03:06:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:49,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-11-28 03:06:49,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:49,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409110372] [2020-11-28 03:06:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:06:49,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:49,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:49,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409110372] [2020-11-28 03:06:49,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:49,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-28 03:06:49,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068985899] [2020-11-28 03:06:49,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:49,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:49,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:49,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:49,285 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-11-28 03:06:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:49,671 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-11-28 03:06:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:06:49,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-28 03:06:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:49,677 INFO L225 Difference]: With dead ends: 226 [2020-11-28 03:06:49,679 INFO L226 Difference]: Without dead ends: 200 [2020-11-28 03:06:49,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:06:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-28 03:06:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-11-28 03:06:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 03:06:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-28 03:06:49,702 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-11-28 03:06:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:49,702 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-28 03:06:49,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-28 03:06:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:06:49,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:49,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:49,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:06:49,914 INFO L429 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]=== [2020-11-28 03:06:49,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:49,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-11-28 03:06:49,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:49,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322244778] [2020-11-28 03:06:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:06:50,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:50,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:50,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322244778] [2020-11-28 03:06:50,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:50,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-28 03:06:50,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670824414] [2020-11-28 03:06:50,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:50,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:50,147 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-28 03:06:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:50,587 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-11-28 03:06:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:06:50,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:06:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:50,590 INFO L225 Difference]: With dead ends: 214 [2020-11-28 03:06:50,590 INFO L226 Difference]: Without dead ends: 185 [2020-11-28 03:06:50,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:06:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-28 03:06:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-28 03:06:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 03:06:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-28 03:06:50,611 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-28 03:06:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:50,612 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-28 03:06:50,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-28 03:06:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:50,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:50,616 INFO L422 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] [2020-11-28 03:06:50,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:06:50,817 INFO L429 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]=== [2020-11-28 03:06:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-28 03:06:50,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:50,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038573440] [2020-11-28 03:06:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:50,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:06:50,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:51,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:51,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038573440] [2020-11-28 03:06:51,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:51,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-28 03:06:51,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081757974] [2020-11-28 03:06:51,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:06:51,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:51,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:06:51,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:51,076 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-11-28 03:06:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:51,554 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-11-28 03:06:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:51,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-28 03:06:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:51,558 INFO L225 Difference]: With dead ends: 183 [2020-11-28 03:06:51,558 INFO L226 Difference]: Without dead ends: 179 [2020-11-28 03:06:51,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:06:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-28 03:06:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-11-28 03:06:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-28 03:06:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-11-28 03:06:51,588 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-11-28 03:06:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:51,589 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-11-28 03:06:51,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:06:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-11-28 03:06:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:51,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:51,596 INFO L422 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] [2020-11-28 03:06:51,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:06:51,823 INFO L429 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]=== [2020-11-28 03:06:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:51,823 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-28 03:06:51,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:51,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586194180] [2020-11-28 03:06:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:51,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:06:51,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:51,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:51,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586194180] [2020-11-28 03:06:51,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:51,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-28 03:06:51,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533104009] [2020-11-28 03:06:51,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:51,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:51,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:51,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:51,983 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-11-28 03:06:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:52,228 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-11-28 03:06:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:06:52,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 03:06:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:52,231 INFO L225 Difference]: With dead ends: 182 [2020-11-28 03:06:52,231 INFO L226 Difference]: Without dead ends: 149 [2020-11-28 03:06:52,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-28 03:06:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-11-28 03:06:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 03:06:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-11-28 03:06:52,251 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-11-28 03:06:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:52,253 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-11-28 03:06:52,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-11-28 03:06:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:06:52,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:52,262 INFO L422 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] [2020-11-28 03:06:52,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:06:52,480 INFO L429 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]=== [2020-11-28 03:06:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-28 03:06:52,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:52,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074298598] [2020-11-28 03:06:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:52,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:06:52,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:52,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:52,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074298598] [2020-11-28 03:06:52,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:52,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-28 03:06:52,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807028478] [2020-11-28 03:06:52,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:06:52,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:06:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:06:52,700 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-11-28 03:06:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:53,671 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-11-28 03:06:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-28 03:06:53,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-28 03:06:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:53,674 INFO L225 Difference]: With dead ends: 369 [2020-11-28 03:06:53,675 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 03:06:53,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-11-28 03:06:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 03:06:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-11-28 03:06:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-28 03:06:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-11-28 03:06:53,693 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-11-28 03:06:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:53,693 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-11-28 03:06:53,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:06:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-11-28 03:06:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:06:53,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:53,695 INFO L422 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, 1] [2020-11-28 03:06:53,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:06:53,904 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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]=== [2020-11-28 03:06:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:53,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-11-28 03:06:53,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:53,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850119869] [2020-11-28 03:06:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:53,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:06:53,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:54,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:54,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850119869] [2020-11-28 03:06:54,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:54,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-28 03:06:54,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907248232] [2020-11-28 03:06:54,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:06:54,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:54,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:06:54,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:54,110 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-11-28 03:06:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:54,665 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-11-28 03:06:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:06:54,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-28 03:06:54,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:54,668 INFO L225 Difference]: With dead ends: 179 [2020-11-28 03:06:54,668 INFO L226 Difference]: Without dead ends: 174 [2020-11-28 03:06:54,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:06:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-28 03:06:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-11-28 03:06:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-28 03:06:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-11-28 03:06:54,688 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-11-28 03:06:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:54,691 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-11-28 03:06:54,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:06:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-11-28 03:06:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:06:54,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:54,692 INFO L422 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, 1] [2020-11-28 03:06:54,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 03:06:54,907 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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]=== [2020-11-28 03:06:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:54,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-11-28 03:06:54,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:54,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311218022] [2020-11-28 03:06:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:54,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:06:55,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:55,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:06:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:55,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311218022] [2020-11-28 03:06:55,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:55,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-28 03:06:55,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511554711] [2020-11-28 03:06:55,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:55,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:06:55,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:55,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:55,048 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-11-28 03:06:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:55,260 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-11-28 03:06:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:06:55,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-28 03:06:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:55,262 INFO L225 Difference]: With dead ends: 159 [2020-11-28 03:06:55,262 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 03:06:55,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:06:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 03:06:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-11-28 03:06:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:06:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-11-28 03:06:55,277 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-11-28 03:06:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:55,278 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-11-28 03:06:55,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-11-28 03:06:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:06:55,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:55,279 INFO L422 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, 1] [2020-11-28 03:06:55,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 03:06:55,496 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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]=== [2020-11-28 03:06:55,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-11-28 03:06:55,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:06:55,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272654649] [2020-11-28 03:06:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 03:06:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:06:55,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:06:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:06:55,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:06:55,718 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:06:55,719 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:06:55,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 03:06:56,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:06:56 BoogieIcfgContainer [2020-11-28 03:06:56,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:06:56,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:06:56,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:06:56,007 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:06:56,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:47" (3/4) ... [2020-11-28 03:06:56,010 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:06:56,095 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5b6a8cf4-b5cb-4ba2-bb93-9783c6bc78af/bin/uautomizer/witness.graphml [2020-11-28 03:06:56,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:06:56,098 INFO L168 Benchmark]: Toolchain (without parser) took 9728.20 ms. Allocated memory was 69.2 MB in the beginning and 134.2 MB in the end (delta: 65.0 MB). Free memory was 54.6 MB in the beginning and 65.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:56,103 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 61.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:56,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.80 ms. Allocated memory is still 69.2 MB. Free memory was 54.4 MB in the beginning and 53.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:56,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.21 ms. Allocated memory is still 69.2 MB. Free memory was 53.0 MB in the beginning and 50.7 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:56,105 INFO L168 Benchmark]: Boogie Preprocessor took 73.32 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:56,109 INFO L168 Benchmark]: RCFGBuilder took 1040.78 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.6 MB in the beginning and 52.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:56,110 INFO L168 Benchmark]: TraceAbstraction took 8025.59 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 52.2 MB in the beginning and 68.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:56,110 INFO L168 Benchmark]: Witness Printer took 88.98 ms. Allocated memory is still 134.2 MB. Free memory was 68.3 MB in the beginning and 65.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:56,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 61.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.80 ms. Allocated memory is still 69.2 MB. Free memory was 54.4 MB in the beginning and 53.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.21 ms. Allocated memory is still 69.2 MB. Free memory was 53.0 MB in the beginning and 50.7 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.32 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1040.78 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.6 MB in the beginning and 52.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8025.59 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 52.2 MB in the beginning and 68.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * Witness Printer took 88.98 ms. Allocated memory is still 134.2 MB. Free memory was 68.3 MB in the beginning and 65.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13170 SizeOfPredicates, 45 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...