./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/cast_union_loose.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/float-benchs/cast_union_loose.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 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ...................................................................................................................................................................................................................................................................................... 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/float-benchs/cast_union_loose.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 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 .................................................................................................................................................................................................................................................................................................. 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 [2020-10-20 00:16:33,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:16:33,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:16:33,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:16:33,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:16:33,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:16:33,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:16:33,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:16:33,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:16:33,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:16:33,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:16:33,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:16:33,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:16:33,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:16:33,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:16:33,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:16:33,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:16:33,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:16:33,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:16:33,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:16:33,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:16:33,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:16:33,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:16:33,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:16:33,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:16:33,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:16:33,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:16:33,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:16:33,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:16:33,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:16:33,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:16:33,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:16:33,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:16:33,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:16:33,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:16:33,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:16:33,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:16:33,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:16:33,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:16:33,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:16:33,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:16:33,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:16:33,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:16:33,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:16:33,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:16:33,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:16:33,155 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:16:33,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:16:33,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:16:33,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:16:33,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:16:33,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:16:33,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:16:33,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:16:33,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:16:33,158 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:16:33,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:16:33,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:16:33,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:16:33,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:16:33,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:16:33,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:16:33,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:16:33,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:16:33,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:16:33,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:16:33,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:16:33,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:16:33,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:16:33,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:16:33,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:16:33,162 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 -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-10-20 00:16:33,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:16:33,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:16:33,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:16:33,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:16:33,441 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:16:33,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-20 00:16:33,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b06e938f/761d9668c8fc458c9f75d20651ef4502/FLAGc6db64e20 [2020-10-20 00:16:33,950 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:16:33,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-20 00:16:33,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b06e938f/761d9668c8fc458c9f75d20651ef4502/FLAGc6db64e20 [2020-10-20 00:16:34,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b06e938f/761d9668c8fc458c9f75d20651ef4502 [2020-10-20 00:16:34,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:16:34,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:16:34,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:34,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:16:34,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:16:34,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558f773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34, skipping insertion in model container [2020-10-20 00:16:34,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:16:34,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:16:34,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:34,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:16:34,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:34,764 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:16:34,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34 WrapperNode [2020-10-20 00:16:34,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:34,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:34,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:16:34,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:16:34,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:34,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:16:34,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:16:34,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:16:34,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (1/1) ... [2020-10-20 00:16:34,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:16:34,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:16:34,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:16:34,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:16:34,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (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 [2020-10-20 00:16:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:16:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:16:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:16:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:16:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:16:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:16:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:16:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:16:35,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:16:35,121 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-20 00:16:35,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:35 BoogieIcfgContainer [2020-10-20 00:16:35,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:16:35,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:16:35,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:16:35,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:16:35,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:16:34" (1/3) ... [2020-10-20 00:16:35,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468fe1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:35, skipping insertion in model container [2020-10-20 00:16:35,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:34" (2/3) ... [2020-10-20 00:16:35,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468fe1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:35, skipping insertion in model container [2020-10-20 00:16:35,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:35" (3/3) ... [2020-10-20 00:16:35,131 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-10-20 00:16:35,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:16:35,150 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:16:35,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:16:35,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:16:35,191 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:16:35,191 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:16:35,191 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:16:35,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:16:35,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:16:35,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:16:35,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:16:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-20 00:16:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:16:35,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:35,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:16:35,226 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:35,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-10-20 00:16:35,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:16:35,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854953417] [2020-10-20 00:16:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:16:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:16:35,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854953417] [2020-10-20 00:16:35,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:35,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:16:35,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292315393] [2020-10-20 00:16:35,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:16:35,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:16:35,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:16:35,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:35,432 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-20 00:16:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:16:35,448 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-20 00:16:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:16:35,450 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:16:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:16:35,460 INFO L225 Difference]: With dead ends: 22 [2020-10-20 00:16:35,460 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 00:16:35,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 00:16:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 00:16:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 00:16:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-10-20 00:16:35,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-10-20 00:16:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:16:35,498 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-10-20 00:16:35,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:16:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-10-20 00:16:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:16:35,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:35,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:16:35,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:16:35,500 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-10-20 00:16:35,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:16:35,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393481839] [2020-10-20 00:16:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:16:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:16:35,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:16:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:16:35,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:16:35,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:16:35,655 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:16:35,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:16:35,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:16:35 BoogieIcfgContainer [2020-10-20 00:16:35,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:16:35,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:16:35,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:16:35,683 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:16:35,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:35" (3/4) ... [2020-10-20 00:16:35,686 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:16:35,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:16:35,689 INFO L168 Benchmark]: Toolchain (without parser) took 1351.47 ms. Allocated memory was 36.2 MB in the beginning and 47.7 MB in the end (delta: 11.5 MB). Free memory was 15.7 MB in the beginning and 23.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,690 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 34.6 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.55 ms. Allocated memory was 36.2 MB in the beginning and 44.0 MB in the end (delta: 7.9 MB). Free memory was 14.8 MB in the beginning and 24.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 44.0 MB. Free memory was 24.5 MB in the beginning and 22.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,693 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 44.0 MB. Free memory was 22.6 MB in the beginning and 21.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,694 INFO L168 Benchmark]: RCFGBuilder took 295.73 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 21.3 MB in the beginning and 17.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,695 INFO L168 Benchmark]: TraceAbstraction took 558.41 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 17.1 MB in the beginning and 24.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,696 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 47.7 MB. Free memory was 23.6 MB in the beginning and 23.3 MB in the end (delta: 313.6 kB). Peak memory consumption was 313.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:35,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 34.6 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 418.55 ms. Allocated memory was 36.2 MB in the beginning and 44.0 MB in the end (delta: 7.9 MB). Free memory was 14.8 MB in the beginning and 24.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 44.0 MB. Free memory was 24.5 MB in the beginning and 22.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 44.0 MB. Free memory was 22.6 MB in the beginning and 21.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 295.73 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 21.3 MB in the beginning and 17.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 558.41 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 17.1 MB in the beginning and 24.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * Witness Printer took 3.95 ms. Allocated memory is still 47.7 MB. Free memory was 23.6 MB in the beginning and 23.3 MB in the end (delta: 313.6 kB). Peak memory consumption was 313.6 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 someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27, overapproximation of bitwiseXor at line 26. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 [2020-10-20 00:16:37,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:16:37,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:16:37,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:16:37,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:16:37,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:16:37,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:16:37,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:16:37,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:16:37,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:16:37,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:16:37,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:16:37,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:16:37,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:16:37,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:16:37,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:16:37,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:16:37,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:16:37,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:16:37,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:16:37,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:16:37,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:16:37,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:16:37,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:16:37,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:16:37,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:16:37,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:16:37,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:16:37,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:16:37,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:16:37,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:16:37,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:16:37,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:16:37,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:16:37,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:16:37,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:16:37,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:16:37,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:16:37,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:16:37,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:16:37,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:16:37,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:16:37,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:16:37,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:16:37,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:16:37,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:16:37,848 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:16:37,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:16:37,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:16:37,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:16:37,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:16:37,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:16:37,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:16:37,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:16:37,850 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:16:37,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:16:37,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:16:37,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:16:37,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:16:37,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:16:37,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:16:37,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:16:37,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:16:37,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:16:37,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:16:37,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:16:37,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:16:37,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:16:37,854 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:16:37,854 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:16:37,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:16:37,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:16:37,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:16:37,855 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 -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-10-20 00:16:38,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:16:38,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:16:38,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:16:38,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:16:38,131 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:16:38,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-20 00:16:38,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6408084d6/4b00de04b4a04544b73f2b1841a9cc21/FLAG3a94ebb05 [2020-10-20 00:16:38,567 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:16:38,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-20 00:16:38,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6408084d6/4b00de04b4a04544b73f2b1841a9cc21/FLAG3a94ebb05 [2020-10-20 00:16:38,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6408084d6/4b00de04b4a04544b73f2b1841a9cc21 [2020-10-20 00:16:38,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:16:38,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:16:38,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:38,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:16:38,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:16:38,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:38" (1/1) ... [2020-10-20 00:16:38,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10332063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:38, skipping insertion in model container [2020-10-20 00:16:38,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:38" (1/1) ... [2020-10-20 00:16:38,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:16:38,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:16:39,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:39,278 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:16:39,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:39,326 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:16:39,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39 WrapperNode [2020-10-20 00:16:39,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:39,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:39,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:16:39,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:16:39,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:39,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:16:39,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:16:39,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:16:39,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (1/1) ... [2020-10-20 00:16:39,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:16:39,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:16:39,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:16:39,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:16:39,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (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 [2020-10-20 00:16:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:16:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:16:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:16:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:16:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:16:39,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:16:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:16:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:16:39,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:16:39,981 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-20 00:16:39,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:39 BoogieIcfgContainer [2020-10-20 00:16:39,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:16:39,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:16:39,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:16:39,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:16:40,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:16:38" (1/3) ... [2020-10-20 00:16:40,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665c3396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:40, skipping insertion in model container [2020-10-20 00:16:40,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:39" (2/3) ... [2020-10-20 00:16:40,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665c3396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:40, skipping insertion in model container [2020-10-20 00:16:40,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:39" (3/3) ... [2020-10-20 00:16:40,010 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-10-20 00:16:40,037 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:16:40,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:16:40,066 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:16:40,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:16:40,097 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:16:40,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:16:40,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:16:40,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:16:40,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:16:40,099 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:16:40,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:16:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-20 00:16:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:16:40,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:40,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:16:40,122 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:40,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-10-20 00:16:40,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:16:40,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518828837] [2020-10-20 00:16:40,143 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 [2020-10-20 00:16:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:40,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:16:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:16:40,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:16:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:16:40,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518828837] [2020-10-20 00:16:40,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:40,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:16:40,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968770245] [2020-10-20 00:16:40,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:16:40,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:16:40,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:16:40,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:40,394 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-20 00:16:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:16:40,412 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-20 00:16:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:16:40,413 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:16:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:16:40,423 INFO L225 Difference]: With dead ends: 22 [2020-10-20 00:16:40,424 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 00:16:40,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 00:16:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 00:16:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 00:16:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-10-20 00:16:40,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-10-20 00:16:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:16:40,463 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-10-20 00:16:40,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:16:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-10-20 00:16:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:16:40,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:40,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:16:40,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:16:40,679 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-10-20 00:16:40,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:16:40,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250179956] [2020-10-20 00:16:40,683 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 [2020-10-20 00:16:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:16:40,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:16:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:16:40,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:16:41,026 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:16:41,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:16:41,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:16:41,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:16:41 BoogieIcfgContainer [2020-10-20 00:16:41,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:16:41,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:16:41,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:16:41,267 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:16:41,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:39" (3/4) ... [2020-10-20 00:16:41,273 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:16:41,315 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:16:41,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:16:41,318 INFO L168 Benchmark]: Toolchain (without parser) took 2386.66 ms. Allocated memory was 34.1 MB in the beginning and 46.7 MB in the end (delta: 12.6 MB). Free memory was 11.6 MB in the beginning and 26.8 MB in the end (delta: -15.2 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:16:41,318 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.0 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 44.9 kB). Peak memory consumption was 44.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.81 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 10.7 MB in the beginning and 21.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.55 ms. Allocated memory is still 43.5 MB. Free memory was 20.9 MB in the beginning and 19.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,321 INFO L168 Benchmark]: Boogie Preprocessor took 31.99 ms. Allocated memory is still 43.5 MB. Free memory was 19.0 MB in the beginning and 17.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,322 INFO L168 Benchmark]: RCFGBuilder took 579.78 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 17.4 MB in the beginning and 14.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,323 INFO L168 Benchmark]: TraceAbstraction took 1277.46 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 14.1 MB in the beginning and 29.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,323 INFO L168 Benchmark]: Witness Printer took 49.10 ms. Allocated memory is still 46.7 MB. Free memory was 29.0 MB in the beginning and 26.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:41,328 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 33.0 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 44.9 kB). Peak memory consumption was 44.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 390.81 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 10.7 MB in the beginning and 21.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.55 ms. Allocated memory is still 43.5 MB. Free memory was 20.9 MB in the beginning and 19.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.99 ms. Allocated memory is still 43.5 MB. Free memory was 19.0 MB in the beginning and 17.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 579.78 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 17.4 MB in the beginning and 14.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1277.46 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 14.1 MB in the beginning and 29.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. * Witness Printer took 49.10 ms. Allocated memory is still 46.7 MB. Free memory was 29.0 MB in the beginning and 26.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 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: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...