./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.25-9a8b2e8 [2020-10-19 22:22:30,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:30,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:30,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:30,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:30,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:30,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:30,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:30,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:30,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:30,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:30,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:30,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:30,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:30,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:30,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:30,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:30,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:30,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:30,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:30,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:30,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:30,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:30,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:30,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:30,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:30,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:30,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:30,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:30,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:30,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:30,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:30,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:30,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:30,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:30,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:30,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:30,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:30,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:30,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:30,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:30,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:31,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:31,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:31,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:31,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:31,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:31,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:31,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:31,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:31,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:31,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:31,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:31,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:31,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:31,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:31,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:31,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:31,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:31,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:31,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:31,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:31,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:31,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:31,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:31,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:31,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:31,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:31,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:31,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:31,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:31,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2020-10-19 22:22:31,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:31,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:31,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:31,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:31,223 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:31,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-19 22:22:31,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e97dd946/cd85c81b3c6845c6bbe494d18b0df4b1/FLAGd5819eba1 [2020-10-19 22:22:31,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:31,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-19 22:22:31,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e97dd946/cd85c81b3c6845c6bbe494d18b0df4b1/FLAGd5819eba1 [2020-10-19 22:22:32,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e97dd946/cd85c81b3c6845c6bbe494d18b0df4b1 [2020-10-19 22:22:32,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:32,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:32,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:32,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:32,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:32,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165b9169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32, skipping insertion in model container [2020-10-19 22:22:32,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:32,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:32,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:32,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:32,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:32,567 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:32,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32 WrapperNode [2020-10-19 22:22:32,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:32,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:32,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:32,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:32,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:32,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:32,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:32,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:32,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... [2020-10-19 22:22:32,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:32,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:32,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:32,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:32,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:33,342 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:33,342 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-10-19 22:22:33,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:33 BoogieIcfgContainer [2020-10-19 22:22:33,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:33,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:33,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:33,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:33,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:32" (1/3) ... [2020-10-19 22:22:33,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4b64c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:33, skipping insertion in model container [2020-10-19 22:22:33,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:32" (2/3) ... [2020-10-19 22:22:33,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4b64c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:33, skipping insertion in model container [2020-10-19 22:22:33,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:33" (3/3) ... [2020-10-19 22:22:33,364 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-10-19 22:22:33,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:33,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-19 22:22:33,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-19 22:22:33,427 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:33,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:33,428 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:33,428 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:33,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:33,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:33,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:33,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-19 22:22:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:22:33,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:33,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:33,463 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]=== [2020-10-19 22:22:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:33,470 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-10-19 22:22:33,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:33,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049393040] [2020-10-19 22:22:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:33,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049393040] [2020-10-19 22:22:33,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:33,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:33,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420529628] [2020-10-19 22:22:33,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:33,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:33,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:33,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:33,887 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 7 states. [2020-10-19 22:22:34,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:34,446 INFO L93 Difference]: Finished difference Result 280 states and 407 transitions. [2020-10-19 22:22:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 22:22:34,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 22:22:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:34,462 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:22:34,462 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:22:34,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-19 22:22:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:22:34,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2020-10-19 22:22:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-19 22:22:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-10-19 22:22:34,527 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2020-10-19 22:22:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:34,528 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-10-19 22:22:34,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-10-19 22:22:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:22:34,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:34,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:34,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:34,530 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]=== [2020-10-19 22:22:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:34,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2020-10-19 22:22:34,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:34,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368618786] [2020-10-19 22:22:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:34,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368618786] [2020-10-19 22:22:34,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:34,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:34,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761512779] [2020-10-19 22:22:34,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:34,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:34,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:34,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:34,665 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-10-19 22:22:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:34,909 INFO L93 Difference]: Finished difference Result 214 states and 265 transitions. [2020-10-19 22:22:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:34,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 22:22:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:34,912 INFO L225 Difference]: With dead ends: 214 [2020-10-19 22:22:34,923 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:22:34,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:22:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-10-19 22:22:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-19 22:22:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-10-19 22:22:34,953 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-10-19 22:22:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:34,955 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-10-19 22:22:34,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-10-19 22:22:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:34,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:34,960 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] [2020-10-19 22:22:34,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:22:34,961 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]=== [2020-10-19 22:22:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:34,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-10-19 22:22:34,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:34,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634531929] [2020-10-19 22:22:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:35,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634531929] [2020-10-19 22:22:35,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:35,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-19 22:22:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089290538] [2020-10-19 22:22:35,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 22:22:35,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:35,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 22:22:35,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:35,219 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 14 states. [2020-10-19 22:22:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:35,614 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2020-10-19 22:22:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:35,615 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-10-19 22:22:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:35,617 INFO L225 Difference]: With dead ends: 167 [2020-10-19 22:22:35,617 INFO L226 Difference]: Without dead ends: 162 [2020-10-19 22:22:35,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-19 22:22:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-19 22:22:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2020-10-19 22:22:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 22:22:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2020-10-19 22:22:35,632 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2020-10-19 22:22:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:35,633 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2020-10-19 22:22:35,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 22:22:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2020-10-19 22:22:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:35,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:35,635 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] [2020-10-19 22:22:35,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:22:35,636 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]=== [2020-10-19 22:22:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:35,637 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-10-19 22:22:35,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:35,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404176534] [2020-10-19 22:22:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:35,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404176534] [2020-10-19 22:22:35,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:35,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:35,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2409839] [2020-10-19 22:22:35,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:35,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:35,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:35,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:35,730 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand 7 states. [2020-10-19 22:22:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:35,875 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2020-10-19 22:22:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:35,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 22:22:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:35,877 INFO L225 Difference]: With dead ends: 183 [2020-10-19 22:22:35,877 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:22:35,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:22:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2020-10-19 22:22:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 22:22:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-10-19 22:22:35,890 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-10-19 22:22:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:35,891 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-10-19 22:22:35,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-10-19 22:22:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:35,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:35,893 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] [2020-10-19 22:22:35,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:22:35,894 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]=== [2020-10-19 22:22:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash 384893056, now seen corresponding path program 1 times [2020-10-19 22:22:35,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:35,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941304639] [2020-10-19 22:22:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:36,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941304639] [2020-10-19 22:22:36,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:36,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:36,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437999159] [2020-10-19 22:22:36,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:36,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:36,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:36,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:36,005 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 7 states. [2020-10-19 22:22:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:36,163 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2020-10-19 22:22:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:36,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 22:22:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:36,165 INFO L225 Difference]: With dead ends: 178 [2020-10-19 22:22:36,166 INFO L226 Difference]: Without dead ends: 153 [2020-10-19 22:22:36,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-19 22:22:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-10-19 22:22:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 22:22:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-10-19 22:22:36,177 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-10-19 22:22:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:36,178 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-10-19 22:22:36,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:36,178 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-10-19 22:22:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:36,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:36,180 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] [2020-10-19 22:22:36,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:22:36,180 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]=== [2020-10-19 22:22:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:36,181 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-10-19 22:22:36,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:36,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186015412] [2020-10-19 22:22:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:36,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186015412] [2020-10-19 22:22:36,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:36,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 22:22:36,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280706757] [2020-10-19 22:22:36,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:36,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:36,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:36,278 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 6 states. [2020-10-19 22:22:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:36,525 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2020-10-19 22:22:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:36,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-19 22:22:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:36,528 INFO L225 Difference]: With dead ends: 342 [2020-10-19 22:22:36,529 INFO L226 Difference]: Without dead ends: 296 [2020-10-19 22:22:36,530 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 [2020-10-19 22:22:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-19 22:22:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2020-10-19 22:22:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-19 22:22:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2020-10-19 22:22:36,543 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2020-10-19 22:22:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:36,544 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2020-10-19 22:22:36,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:36,544 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2020-10-19 22:22:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:36,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:36,546 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] [2020-10-19 22:22:36,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:22:36,547 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]=== [2020-10-19 22:22:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-10-19 22:22:36,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:36,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820887902] [2020-10-19 22:22:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:36,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:36,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:36,709 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:22:36,710 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:36,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:22:36,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:36 BoogieIcfgContainer [2020-10-19 22:22:36,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:36,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:36,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:36,799 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:36,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:33" (3/4) ... [2020-10-19 22:22:36,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:22:36,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:36,811 INFO L168 Benchmark]: Toolchain (without parser) took 4680.55 ms. Allocated memory was 39.3 MB in the beginning and 62.4 MB in the end (delta: 23.1 MB). Free memory was 17.1 MB in the beginning and 9.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,813 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.0 MB in the end (delta: 43.8 kB). Peak memory consumption was 43.8 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.92 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.3 MB in the beginning and 14.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.91 ms. Allocated memory is still 40.4 MB. Free memory was 14.1 MB in the beginning and 11.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,837 INFO L168 Benchmark]: Boogie Preprocessor took 41.97 ms. Allocated memory is still 40.4 MB. Free memory was 11.5 MB in the beginning and 9.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,838 INFO L168 Benchmark]: RCFGBuilder took 674.96 ms. Allocated memory was 40.4 MB in the beginning and 41.9 MB in the end (delta: 1.6 MB). Free memory was 9.3 MB in the beginning and 9.4 MB in the end (delta: -136.0 kB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,839 INFO L168 Benchmark]: TraceAbstraction took 3452.30 ms. Allocated memory was 41.9 MB in the beginning and 62.4 MB in the end (delta: 20.4 MB). Free memory was 8.9 MB in the beginning and 10.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,840 INFO L168 Benchmark]: Witness Printer took 6.71 ms. Allocated memory is still 62.4 MB. Free memory was 10.0 MB in the beginning and 9.7 MB in the end (delta: 303.7 kB). Peak memory consumption was 303.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:36,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.0 MB in the end (delta: 43.8 kB). Peak memory consumption was 43.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 435.92 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.3 MB in the beginning and 14.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 57.91 ms. Allocated memory is still 40.4 MB. Free memory was 14.1 MB in the beginning and 11.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.97 ms. Allocated memory is still 40.4 MB. Free memory was 11.5 MB in the beginning and 9.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 674.96 ms. Allocated memory was 40.4 MB in the beginning and 41.9 MB in the end (delta: 1.6 MB). Free memory was 9.3 MB in the beginning and 9.4 MB in the end (delta: -136.0 kB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3452.30 ms. Allocated memory was 41.9 MB in the beginning and 62.4 MB in the end (delta: 20.4 MB). Free memory was 8.9 MB in the beginning and 10.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 14.3 GB. * Witness Printer took 6.71 ms. Allocated memory is still 62.4 MB. Free memory was 10.0 MB in the beginning and 9.7 MB in the end (delta: 303.7 kB). Peak memory consumption was 303.7 kB. Max. memory is 14.3 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, 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, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 417 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s 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 0.1.25-9a8b2e8 [2020-10-19 22:22:39,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:39,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:39,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:39,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:39,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:39,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:39,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:39,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:39,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:39,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:39,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:39,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:39,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:39,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:39,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:39,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:39,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:39,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:39,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:39,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:39,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:39,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:39,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:39,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:39,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:39,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:39,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:39,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:39,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:39,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:39,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:39,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:39,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:39,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:39,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:39,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:39,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:39,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:39,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:39,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:39,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:22:39,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:39,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:39,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:39,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:39,227 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:39,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:39,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:39,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:39,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:39,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:39,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:39,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:39,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:22:39,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:22:39,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:39,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:39,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:39,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:39,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:39,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:39,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:39,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:39,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:39,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:39,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:39,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:39,231 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:22:39,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:22:39,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:39,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:39,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:22:39,232 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2020-10-19 22:22:39,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:39,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:39,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:39,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:39,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:39,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-19 22:22:39,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed7a5549/d4dd1893d555450a97806472a628416b/FLAGe2fef9abf [2020-10-19 22:22:39,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:39,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-19 22:22:39,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed7a5549/d4dd1893d555450a97806472a628416b/FLAGe2fef9abf [2020-10-19 22:22:40,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed7a5549/d4dd1893d555450a97806472a628416b [2020-10-19 22:22:40,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:40,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:40,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:40,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:40,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:40,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad2c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40, skipping insertion in model container [2020-10-19 22:22:40,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:40,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:40,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:40,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:40,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:40,838 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:40,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40 WrapperNode [2020-10-19 22:22:40,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:40,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:40,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:40,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:40,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:40,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:40,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:40,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:40,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:40,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:40,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:40,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:40,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:22:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:41,565 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:41,565 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-10-19 22:22:41,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:41 BoogieIcfgContainer [2020-10-19 22:22:41,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:41,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:41,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:41,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:41,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:40" (1/3) ... [2020-10-19 22:22:41,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f78e446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:41, skipping insertion in model container [2020-10-19 22:22:41,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (2/3) ... [2020-10-19 22:22:41,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f78e446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:41, skipping insertion in model container [2020-10-19 22:22:41,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:41" (3/3) ... [2020-10-19 22:22:41,577 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-10-19 22:22:41,589 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:41,597 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-19 22:22:41,627 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-19 22:22:41,657 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:41,657 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:41,658 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:41,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:41,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:41,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:41,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:41,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-19 22:22:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:22:41,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:41,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:41,690 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]=== [2020-10-19 22:22:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:41,697 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-10-19 22:22:41,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:41,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981329516] [2020-10-19 22:22:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:41,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:41,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:41,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:41,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981329516] [2020-10-19 22:22:41,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:41,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:41,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425132294] [2020-10-19 22:22:41,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:41,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:41,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:41,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:41,988 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-10-19 22:22:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:42,157 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-10-19 22:22:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:42,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-19 22:22:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:42,171 INFO L225 Difference]: With dead ends: 238 [2020-10-19 22:22:42,171 INFO L226 Difference]: Without dead ends: 139 [2020-10-19 22:22:42,175 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 [2020-10-19 22:22:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-19 22:22:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-10-19 22:22:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 22:22:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-10-19 22:22:42,232 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-10-19 22:22:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:42,232 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-10-19 22:22:42,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-10-19 22:22:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:22:42,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:42,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:42,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:22:42,456 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]=== [2020-10-19 22:22:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-10-19 22:22:42,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:42,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149060726] [2020-10-19 22:22:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:42,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149060726] [2020-10-19 22:22:42,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:42,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 22:22:42,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268793953] [2020-10-19 22:22:42,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:42,624 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-10-19 22:22:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:42,945 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-10-19 22:22:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:22:42,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-19 22:22:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:42,948 INFO L225 Difference]: With dead ends: 226 [2020-10-19 22:22:42,948 INFO L226 Difference]: Without dead ends: 200 [2020-10-19 22:22:42,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:22:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-19 22:22:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-10-19 22:22:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-19 22:22:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-10-19 22:22:42,971 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-10-19 22:22:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:42,972 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-10-19 22:22:42,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-10-19 22:22:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:22:42,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:42,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:43,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:22:43,200 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]=== [2020-10-19 22:22:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:43,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-10-19 22:22:43,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:43,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113809363] [2020-10-19 22:22:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:43,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:43,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:43,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:43,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113809363] [2020-10-19 22:22:43,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:43,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-19 22:22:43,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027579933] [2020-10-19 22:22:43,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:43,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:43,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:43,337 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-10-19 22:22:43,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:43,636 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-10-19 22:22:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:43,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 22:22:43,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:43,638 INFO L225 Difference]: With dead ends: 214 [2020-10-19 22:22:43,638 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:22:43,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:22:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-10-19 22:22:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-19 22:22:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-10-19 22:22:43,662 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-10-19 22:22:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:43,662 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-10-19 22:22:43,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-10-19 22:22:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:43,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:43,669 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] [2020-10-19 22:22:43,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:22:43,881 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]=== [2020-10-19 22:22:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:43,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-10-19 22:22:43,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:43,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033876405] [2020-10-19 22:22:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:43,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:43,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:44,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:44,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033876405] [2020-10-19 22:22:44,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:44,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-10-19 22:22:44,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864698608] [2020-10-19 22:22:44,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:22:44,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:44,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:22:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:44,053 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-10-19 22:22:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:44,429 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-10-19 22:22:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:44,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-19 22:22:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:44,433 INFO L225 Difference]: With dead ends: 183 [2020-10-19 22:22:44,434 INFO L226 Difference]: Without dead ends: 179 [2020-10-19 22:22:44,434 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 [2020-10-19 22:22:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-19 22:22:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-10-19 22:22:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-19 22:22:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-10-19 22:22:44,448 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-10-19 22:22:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:44,449 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-10-19 22:22:44,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:22:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-10-19 22:22:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:44,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:44,450 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] [2020-10-19 22:22:44,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:22:44,671 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]=== [2020-10-19 22:22:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-10-19 22:22:44,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:44,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799318653] [2020-10-19 22:22:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:44,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:44,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:44,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799318653] [2020-10-19 22:22:44,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:44,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-19 22:22:44,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768978812] [2020-10-19 22:22:44,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:44,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:44,776 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-10-19 22:22:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:44,964 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-10-19 22:22:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:44,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 22:22:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:44,966 INFO L225 Difference]: With dead ends: 182 [2020-10-19 22:22:44,967 INFO L226 Difference]: Without dead ends: 149 [2020-10-19 22:22:44,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-19 22:22:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-10-19 22:22:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-19 22:22:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-10-19 22:22:44,978 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-10-19 22:22:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:44,979 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-10-19 22:22:44,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-10-19 22:22:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:22:44,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:44,981 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] [2020-10-19 22:22:45,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:22:45,203 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]=== [2020-10-19 22:22:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:45,204 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-10-19 22:22:45,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:45,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823400681] [2020-10-19 22:22:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:45,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 22:22:45,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:45,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:45,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823400681] [2020-10-19 22:22:45,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:45,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-10-19 22:22:45,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028524392] [2020-10-19 22:22:45,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:45,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:45,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:45,366 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-10-19 22:22:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:46,183 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-10-19 22:22:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-19 22:22:46,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-19 22:22:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:46,186 INFO L225 Difference]: With dead ends: 369 [2020-10-19 22:22:46,186 INFO L226 Difference]: Without dead ends: 323 [2020-10-19 22:22:46,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-10-19 22:22:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-19 22:22:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-10-19 22:22:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-19 22:22:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-10-19 22:22:46,213 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-10-19 22:22:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:46,213 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-10-19 22:22:46,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-10-19 22:22:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:22:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:46,217 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] [2020-10-19 22:22:46,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 22:22:46,425 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]=== [2020-10-19 22:22:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:46,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-10-19 22:22:46,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:46,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733031112] [2020-10-19 22:22:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:46,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:46,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:46,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:46,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733031112] [2020-10-19 22:22:46,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:46,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-10-19 22:22:46,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337731702] [2020-10-19 22:22:46,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:22:46,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:46,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:22:46,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:46,614 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-10-19 22:22:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:47,014 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-10-19 22:22:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 22:22:47,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-19 22:22:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:47,016 INFO L225 Difference]: With dead ends: 179 [2020-10-19 22:22:47,016 INFO L226 Difference]: Without dead ends: 174 [2020-10-19 22:22:47,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-19 22:22:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-19 22:22:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-10-19 22:22:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-19 22:22:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-10-19 22:22:47,033 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-10-19 22:22:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:47,035 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-10-19 22:22:47,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:22:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-10-19 22:22:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:22:47,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:47,039 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] [2020-10-19 22:22:47,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 22:22:47,253 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]=== [2020-10-19 22:22:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-10-19 22:22:47,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:47,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439101555] [2020-10-19 22:22:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:47,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:22:47,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:47,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:47,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439101555] [2020-10-19 22:22:47,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:47,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-10-19 22:22:47,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763119086] [2020-10-19 22:22:47,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:47,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:47,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:47,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:47,347 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-10-19 22:22:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:47,499 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-10-19 22:22:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:47,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-19 22:22:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:47,501 INFO L225 Difference]: With dead ends: 159 [2020-10-19 22:22:47,502 INFO L226 Difference]: Without dead ends: 140 [2020-10-19 22:22:47,503 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 [2020-10-19 22:22:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-19 22:22:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-10-19 22:22:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-19 22:22:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-10-19 22:22:47,514 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-10-19 22:22:47,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:47,514 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-10-19 22:22:47,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:47,514 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-10-19 22:22:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:22:47,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:47,516 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] [2020-10-19 22:22:47,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 22:22:47,728 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]=== [2020-10-19 22:22:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-10-19 22:22:47,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:47,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975655381] [2020-10-19 22:22:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 22:22:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:47,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:47,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:47,865 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:22:47,866 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:48,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 22:22:48,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:48 BoogieIcfgContainer [2020-10-19 22:22:48,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:48,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:48,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:48,122 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:48,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:41" (3/4) ... [2020-10-19 22:22:48,125 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:22:48,208 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:22:48,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:48,211 INFO L168 Benchmark]: Toolchain (without parser) took 7875.94 ms. Allocated memory was 35.1 MB in the beginning and 66.6 MB in the end (delta: 31.5 MB). Free memory was 12.0 MB in the beginning and 20.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,211 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.6 MB in the end (delta: 27.2 kB). Peak memory consumption was 27.2 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.87 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.1 MB in the beginning and 22.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.88 ms. Allocated memory is still 43.0 MB. Free memory was 22.7 MB in the beginning and 20.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,213 INFO L168 Benchmark]: Boogie Preprocessor took 41.55 ms. Allocated memory is still 43.0 MB. Free memory was 20.1 MB in the beginning and 18.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,214 INFO L168 Benchmark]: RCFGBuilder took 630.48 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 17.9 MB in the beginning and 14.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,215 INFO L168 Benchmark]: TraceAbstraction took 6552.44 ms. Allocated memory was 45.6 MB in the beginning and 66.6 MB in the end (delta: 21.0 MB). Free memory was 13.4 MB in the beginning and 24.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,215 INFO L168 Benchmark]: Witness Printer took 86.39 ms. Allocated memory is still 66.6 MB. Free memory was 24.4 MB in the beginning and 20.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:48,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.6 MB in the end (delta: 27.2 kB). Peak memory consumption was 27.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 498.87 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.1 MB in the beginning and 22.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.88 ms. Allocated memory is still 43.0 MB. Free memory was 22.7 MB in the beginning and 20.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.55 ms. Allocated memory is still 43.0 MB. Free memory was 20.1 MB in the beginning and 18.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 630.48 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 17.9 MB in the beginning and 14.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6552.44 ms. Allocated memory was 45.6 MB in the beginning and 66.6 MB in the end (delta: 21.0 MB). Free memory was 13.4 MB in the beginning and 24.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Witness Printer took 86.39 ms. Allocated memory is still 66.6 MB. Free memory was 24.4 MB in the beginning and 20.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 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: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.7s, 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, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.4s 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s 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...