./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc 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_1.5.800.v20200727-1323.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/floats-cbmc-regression/float-no-simp6.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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ................................................................................................................................................................................................................................... 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_1.5.800.v20200727-1323.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/floats-cbmc-regression/float-no-simp6.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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:55:19,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:55:19,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:55:19,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:55:19,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:55:19,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:55:19,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:55:19,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:55:19,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:55:19,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:55:19,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:55:19,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:55:19,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:55:19,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:55:19,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:55:19,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:55:19,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:55:19,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:55:19,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:55:19,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:55:19,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:55:19,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:55:19,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:55:19,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:55:19,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:55:19,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:55:19,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:55:19,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:55:19,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:55:19,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:55:19,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:55:19,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:55:19,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:55:19,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:55:19,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:55:19,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:55:19,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:55:19,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:55:19,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:55:19,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:55:19,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:55:19,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:55:19,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:55:19,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:55:19,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:55:19,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:55:19,466 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:55:19,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:55:19,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:55:19,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:55:19,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:55:19,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:55:19,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:55:19,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:55:19,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:55:19,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:55:19,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:55:19,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:55:19,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:55:19,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:55:19,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:55:19,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:55:19,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:55:19,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:55:19,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:55:19,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:55:19,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:55:19,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:55:19,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:55:19,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:55:19,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:55:19,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-10-24 21:55:19,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:55:19,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:55:19,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:55:19,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:55:19,988 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:55:19,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 21:55:20,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afcaea56/71aa1d312d2c4dc49c4d713e1f3c9a08/FLAG5cefc98e8 [2020-10-24 21:55:20,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:55:20,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 21:55:20,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afcaea56/71aa1d312d2c4dc49c4d713e1f3c9a08/FLAG5cefc98e8 [2020-10-24 21:55:21,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afcaea56/71aa1d312d2c4dc49c4d713e1f3c9a08 [2020-10-24 21:55:21,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:55:21,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:55:21,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:55:21,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:55:21,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:55:21,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9f859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21, skipping insertion in model container [2020-10-24 21:55:21,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:55:21,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:55:21,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:55:21,423 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:55:21,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:55:21,466 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:55:21,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21 WrapperNode [2020-10-24 21:55:21,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:55:21,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:55:21,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:55:21,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:55:21,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:55:21,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:55:21,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:55:21,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:55:21,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (1/1) ... [2020-10-24 21:55:21,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:55:21,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:55:21,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:55:21,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:55:21,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (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 [2020-10-24 21:55:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:55:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:55:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:55:21,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:55:22,105 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:55:22,105 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 21:55:22,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:22 BoogieIcfgContainer [2020-10-24 21:55:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:55:22,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:55:22,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:55:22,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:55:22,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:55:21" (1/3) ... [2020-10-24 21:55:22,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da44eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:22, skipping insertion in model container [2020-10-24 21:55:22,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:21" (2/3) ... [2020-10-24 21:55:22,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da44eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:22, skipping insertion in model container [2020-10-24 21:55:22,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:22" (3/3) ... [2020-10-24 21:55:22,127 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-10-24 21:55:22,147 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:55:22,152 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-24 21:55:22,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-24 21:55:22,224 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:55:22,224 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:55:22,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:55:22,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:55:22,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:55:22,225 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:55:22,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:55:22,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:55:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 21:55:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 21:55:22,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:55:22,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 21:55:22,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:55:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:55:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 21:55:22,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:55:22,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20830743] [2020-10-24 21:55:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:55:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:55:22,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:55:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:55:22,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:55:22,441 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:55:22,441 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:55:22,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:55:22,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:55:22 BoogieIcfgContainer [2020-10-24 21:55:22,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:55:22,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:55:22,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:55:22,466 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:55:22,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:22" (3/4) ... [2020-10-24 21:55:22,471 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:55:22,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:55:22,474 INFO L168 Benchmark]: Toolchain (without parser) took 1345.17 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 17.4 MB in the beginning and 21.3 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:22,475 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 39.8 MB. Free memory was 19.7 MB in the beginning and 19.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:55:22,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.81 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.8 MB in the beginning and 23.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:22,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.21 ms. Allocated memory is still 48.2 MB. Free memory was 23.2 MB in the beginning and 21.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:55:22,478 INFO L168 Benchmark]: Boogie Preprocessor took 29.46 ms. Allocated memory is still 48.2 MB. Free memory was 21.7 MB in the beginning and 32.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:22,479 INFO L168 Benchmark]: RCFGBuilder took 570.66 ms. Allocated memory is still 48.2 MB. Free memory was 32.7 MB in the beginning and 21.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:22,480 INFO L168 Benchmark]: TraceAbstraction took 352.92 ms. Allocated memory is still 48.2 MB. Free memory was 21.4 MB in the beginning and 21.7 MB in the end (delta: -295.3 kB). Peak memory consumption was 793.6 kB. Max. memory is 16.1 GB. [2020-10-24 21:55:22,481 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 21.3 MB in the end (delta: 201.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:55:22,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 39.8 MB. Free memory was 19.7 MB in the beginning and 19.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.81 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.8 MB in the beginning and 23.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.21 ms. Allocated memory is still 48.2 MB. Free memory was 23.2 MB in the beginning and 21.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.46 ms. Allocated memory is still 48.2 MB. Free memory was 21.7 MB in the beginning and 32.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 570.66 ms. Allocated memory is still 48.2 MB. Free memory was 32.7 MB in the beginning and 21.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 352.92 ms. Allocated memory is still 48.2 MB. Free memory was 21.4 MB in the beginning and 21.7 MB in the end (delta: -295.3 kB). Peak memory consumption was 793.6 kB. Max. memory is 16.1 GB. * Witness Printer took 5.26 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 21.3 MB in the end (delta: 201.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L3] __assert_fail("0", "float-no-simp6.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:55:25,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:55:25,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:55:25,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:55:25,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:55:25,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:55:25,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:55:25,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:55:25,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:55:25,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:55:25,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:55:25,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:55:25,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:55:25,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:55:25,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:55:25,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:55:25,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:55:25,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:55:25,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:55:25,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:55:25,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:55:25,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:55:25,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:55:25,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:55:25,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:55:25,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:55:25,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:55:25,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:55:25,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:55:25,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:55:25,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:55:25,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:55:25,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:55:25,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:55:25,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:55:25,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:55:25,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:55:25,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:55:25,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:55:25,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:55:25,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:55:25,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:55:25,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:55:25,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:55:25,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:55:25,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:55:25,432 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:55:25,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:55:25,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:55:25,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:55:25,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:55:25,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:55:25,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:55:25,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:55:25,435 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:55:25,436 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:55:25,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:55:25,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:55:25,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:55:25,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:55:25,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:55:25,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:55:25,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:55:25,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:55:25,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:55:25,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:55:25,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:55:25,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:55:25,439 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:55:25,439 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:55:25,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:55:25,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:55:25,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:55:25,440 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-10-24 21:55:25,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:55:25,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:55:25,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:55:25,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:55:25,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:55:25,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 21:55:25,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/985ab6ab9/56d8b7b3decd4022a8f4a5a65e55a786/FLAGe3c5c9823 [2020-10-24 21:55:26,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:55:26,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 21:55:26,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/985ab6ab9/56d8b7b3decd4022a8f4a5a65e55a786/FLAGe3c5c9823 [2020-10-24 21:55:27,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/985ab6ab9/56d8b7b3decd4022a8f4a5a65e55a786 [2020-10-24 21:55:27,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:55:27,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:55:27,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:55:27,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:55:27,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:55:27,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126c75c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27, skipping insertion in model container [2020-10-24 21:55:27,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:55:27,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:55:27,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:55:27,348 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:55:27,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:55:27,401 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:55:27,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27 WrapperNode [2020-10-24 21:55:27,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:55:27,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:55:27,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:55:27,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:55:27,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:55:27,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:55:27,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:55:27,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:55:27,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (1/1) ... [2020-10-24 21:55:27,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:55:27,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:55:27,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:55:27,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:55:27,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (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 [2020-10-24 21:55:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:55:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:55:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:55:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:55:29,335 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:55:29,336 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 21:55:29,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:29 BoogieIcfgContainer [2020-10-24 21:55:29,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:55:29,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:55:29,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:55:29,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:55:29,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:55:27" (1/3) ... [2020-10-24 21:55:29,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f03472e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:29, skipping insertion in model container [2020-10-24 21:55:29,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:27" (2/3) ... [2020-10-24 21:55:29,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f03472e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:29, skipping insertion in model container [2020-10-24 21:55:29,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:29" (3/3) ... [2020-10-24 21:55:29,355 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-10-24 21:55:29,374 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:55:29,380 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-24 21:55:29,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-24 21:55:29,427 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:55:29,427 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:55:29,427 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:55:29,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:55:29,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:55:29,428 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:55:29,428 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:55:29,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:55:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 21:55:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 21:55:29,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:55:29,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 21:55:29,450 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:55:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:55:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 21:55:29,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:55:29,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541143888] [2020-10-24 21:55:29,471 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 [2020-10-24 21:55:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:55:29,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 21:55:29,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:55:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:55:29,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:55:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:55:29,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541143888] [2020-10-24 21:55:29,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:55:29,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 21:55:29,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150756514] [2020-10-24 21:55:29,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 21:55:29,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:55:29,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 21:55:29,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:55:29,940 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-10-24 21:55:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:55:30,766 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-24 21:55:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 21:55:30,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-10-24 21:55:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:55:30,786 INFO L225 Difference]: With dead ends: 30 [2020-10-24 21:55:30,786 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 21:55:30,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:55:30,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 21:55:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 21:55:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 21:55:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-10-24 21:55:30,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-10-24 21:55:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:55:30,827 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-10-24 21:55:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 21:55:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-10-24 21:55:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 21:55:30,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:55:30,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 21:55:31,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:55:31,032 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:55:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:55:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-10-24 21:55:31,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:55:31,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888842324] [2020-10-24 21:55:31,035 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 [2020-10-24 21:55:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:55:31,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 21:55:31,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:55:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:55:31,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:55:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:55:31,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888842324] [2020-10-24 21:55:31,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:55:31,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 21:55:31,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160099478] [2020-10-24 21:55:31,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 21:55:31,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:55:31,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 21:55:31,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:55:31,453 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-10-24 21:55:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:55:31,921 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-10-24 21:55:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 21:55:31,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-10-24 21:55:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:55:31,922 INFO L225 Difference]: With dead ends: 11 [2020-10-24 21:55:31,922 INFO L226 Difference]: Without dead ends: 9 [2020-10-24 21:55:31,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:55:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-24 21:55:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-24 21:55:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 21:55:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-10-24 21:55:31,926 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-10-24 21:55:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:55:31,926 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-10-24 21:55:31,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 21:55:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-10-24 21:55:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 21:55:31,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:55:31,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:55:32,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:55:32,136 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:55:32,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:55:32,138 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-10-24 21:55:32,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:55:32,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622287612] [2020-10-24 21:55:32,139 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 [2020-10-24 21:55:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:55:32,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 21:55:32,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:55:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:55:32,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:55:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:55:32,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622287612] [2020-10-24 21:55:32,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:55:32,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 21:55:32,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865159436] [2020-10-24 21:55:32,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 21:55:32,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:55:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 21:55:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:55:32,547 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2020-10-24 21:55:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:55:33,536 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-10-24 21:55:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 21:55:33,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-24 21:55:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:55:33,548 INFO L225 Difference]: With dead ends: 9 [2020-10-24 21:55:33,548 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 21:55:33,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:55:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 21:55:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 21:55:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 21:55:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 21:55:33,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-10-24 21:55:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:55:33,550 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 21:55:33,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 21:55:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 21:55:33,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 21:55:33,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 21:55:33,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 21:55:33,764 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,765 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,766 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:55:33,767 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-24 21:55:33,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:55:33 BoogieIcfgContainer [2020-10-24 21:55:33,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:55:33,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:55:33,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:55:33,774 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:55:33,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:29" (3/4) ... [2020-10-24 21:55:33,778 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 21:55:33,791 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 21:55:33,791 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 21:55:33,791 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 21:55:33,791 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 21:55:33,836 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:55:33,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:55:33,839 INFO L168 Benchmark]: Toolchain (without parser) took 6771.09 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.4 MB in the beginning and 29.0 MB in the end (delta: -9.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:33,839 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 41.9 MB. Free memory is still 19.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:55:33,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.35 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.7 MB in the beginning and 24.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:33,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.62 ms. Allocated memory is still 50.3 MB. Free memory was 24.5 MB in the beginning and 34.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:33,842 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 50.3 MB. Free memory was 34.9 MB in the beginning and 33.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:55:33,843 INFO L168 Benchmark]: RCFGBuilder took 1842.30 ms. Allocated memory is still 50.3 MB. Free memory was 33.8 MB in the beginning and 22.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:33,843 INFO L168 Benchmark]: TraceAbstraction took 4431.61 ms. Allocated memory is still 50.3 MB. Free memory was 21.7 MB in the beginning and 31.7 MB in the end (delta: -10.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:55:33,844 INFO L168 Benchmark]: Witness Printer took 62.57 ms. Allocated memory is still 50.3 MB. Free memory was 31.4 MB in the beginning and 29.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:55:33,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 41.9 MB. Free memory is still 19.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.35 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.7 MB in the beginning and 24.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.62 ms. Allocated memory is still 50.3 MB. Free memory was 24.5 MB in the beginning and 34.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 50.3 MB. Free memory was 34.9 MB in the beginning and 33.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1842.30 ms. Allocated memory is still 50.3 MB. Free memory was 33.8 MB in the beginning and 22.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4431.61 ms. Allocated memory is still 50.3 MB. Free memory was 21.7 MB in the beginning and 31.7 MB in the end (delta: -10.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 62.57 ms. Allocated memory is still 50.3 MB. Free memory was 31.4 MB in the beginning and 29.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 33 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 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 proved your program to be correct! Received shutdown request...