./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/nla-digbench-scaling/freire1_unwindbound2.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 d861a67fd24091b9e1d344eca64b2dd8db9fc27c ................................................................................................................................................................................................................................................ 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/nla-digbench-scaling/freire1_unwindbound2.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 d861a67fd24091b9e1d344eca64b2dd8db9fc27c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 06:12:17,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 06:12:17,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 06:12:17,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 06:12:17,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 06:12:17,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 06:12:17,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 06:12:17,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 06:12:17,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 06:12:17,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 06:12:17,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 06:12:17,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 06:12:17,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 06:12:17,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 06:12:17,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 06:12:17,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 06:12:17,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 06:12:17,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 06:12:17,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 06:12:17,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 06:12:17,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 06:12:17,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 06:12:17,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 06:12:17,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 06:12:17,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 06:12:17,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 06:12:17,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 06:12:17,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 06:12:17,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 06:12:17,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 06:12:17,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 06:12:17,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 06:12:17,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 06:12:17,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 06:12:17,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 06:12:17,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 06:12:17,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 06:12:17,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 06:12:17,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 06:12:17,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 06:12:17,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 06:12:17,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 06:12:17,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 06:12:17,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 06:12:17,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 06:12:17,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 06:12:17,540 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 06:12:17,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 06:12:17,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 06:12:17,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 06:12:17,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 06:12:17,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 06:12:17,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 06:12:17,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 06:12:17,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 06:12:17,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 06:12:17,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 06:12:17,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 06:12:17,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 06:12:17,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 06:12:17,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 06:12:17,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 06:12:17,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 06:12:17,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 06:12:17,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 06:12:17,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 06:12:17,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 06:12:17,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 06:12:17,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 06:12:17,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 06:12:17,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d861a67fd24091b9e1d344eca64b2dd8db9fc27c [2021-07-05 06:12:17,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 06:12:17,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 06:12:17,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 06:12:17,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 06:12:17,900 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 06:12:17,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-07-05 06:12:17,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d551c573/3f8dffe096324f8b8963e5f81fcf7b72/FLAGe2243fe62 [2021-07-05 06:12:18,370 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 06:12:18,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-07-05 06:12:18,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d551c573/3f8dffe096324f8b8963e5f81fcf7b72/FLAGe2243fe62 [2021-07-05 06:12:18,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d551c573/3f8dffe096324f8b8963e5f81fcf7b72 [2021-07-05 06:12:18,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 06:12:18,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 06:12:18,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 06:12:18,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 06:12:18,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 06:12:18,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f61895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18, skipping insertion in model container [2021-07-05 06:12:18,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 06:12:18,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 06:12:18,556 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-07-05 06:12:18,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 06:12:18,593 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 06:12:18,631 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-07-05 06:12:18,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 06:12:18,649 INFO L208 MainTranslator]: Completed translation [2021-07-05 06:12:18,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18 WrapperNode [2021-07-05 06:12:18,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 06:12:18,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 06:12:18,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 06:12:18,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 06:12:18,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 06:12:18,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 06:12:18,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 06:12:18,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 06:12:18,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 06:12:18,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 06:12:18,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 06:12:18,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 06:12:18,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (1/1) ... [2021-07-05 06:12:18,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 06:12:18,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 06:12:18,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-05 06:12:18,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-05 06:12:18,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 06:12:18,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 06:12:18,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 06:12:18,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 06:12:18,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 06:12:18,978 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-07-05 06:12:18,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 06:12:18 BoogieIcfgContainer [2021-07-05 06:12:18,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 06:12:18,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 06:12:18,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 06:12:18,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 06:12:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 06:12:18" (1/3) ... [2021-07-05 06:12:18,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b31a763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 06:12:18, skipping insertion in model container [2021-07-05 06:12:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:18" (2/3) ... [2021-07-05 06:12:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b31a763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 06:12:18, skipping insertion in model container [2021-07-05 06:12:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 06:12:18" (3/3) ... [2021-07-05 06:12:18,991 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-07-05 06:12:18,997 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 06:12:18,998 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-05 06:12:19,055 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 06:12:19,060 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 06:12:19,060 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 06:12:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 06:12:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 06:12:19,093 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 06:12:19,094 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 06:12:19,094 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 06:12:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 06:12:19,114 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-07-05 06:12:19,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 06:12:19,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355761285] [2021-07-05 06:12:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 06:12:19,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 06:12:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 06:12:19,215 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 06:12:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 06:12:19,231 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 06:12:19,247 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 06:12:19,249 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 06:12:19,252 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 06:12:19,252 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 06:12:19,255 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (1/2) [2021-07-05 06:12:19,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 06:12:19 BoogieIcfgContainer [2021-07-05 06:12:19,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 06:12:19,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 06:12:19,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 06:12:19,277 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 06:12:19,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 06:12:18" (3/4) ... [2021-07-05 06:12:19,280 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-07-05 06:12:19,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 06:12:19,282 INFO L168 Benchmark]: Toolchain (without parser) took 884.56 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 30.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-07-05 06:12:19,283 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 50.3 MB. Free memory is still 32.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 06:12:19,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.34 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 44.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 06:12:19,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.16 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 06:12:19,285 INFO L168 Benchmark]: Boogie Preprocessor took 18.97 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 41.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 06:12:19,285 INFO L168 Benchmark]: RCFGBuilder took 282.59 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 29.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 06:12:19,286 INFO L168 Benchmark]: TraceAbstraction took 294.59 ms. Allocated memory is still 60.8 MB. Free memory was 29.1 MB in the beginning and 31.4 MB in the end (delta: -2.2 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2021-07-05 06:12:19,286 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 30.9 MB in the end (delta: 229.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 06:12:19,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 50.3 MB. Free memory is still 32.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.34 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 44.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.16 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.97 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 41.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 282.59 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 29.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 294.59 ms. Allocated memory is still 60.8 MB. Free memory was 29.1 MB in the beginning and 31.4 MB in the end (delta: -2.2 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.06 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 30.9 MB in the end (delta: 229.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<2 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 202.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 23.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.9ms SsaConstructionTime, 32.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 [2021-07-05 06:12:19,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 06:12:21,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 06:12:21,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 06:12:21,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 06:12:21,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 06:12:21,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 06:12:21,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 06:12:21,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 06:12:21,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 06:12:21,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 06:12:21,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 06:12:21,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 06:12:21,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 06:12:21,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 06:12:21,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 06:12:21,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 06:12:21,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 06:12:21,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 06:12:21,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 06:12:21,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 06:12:21,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 06:12:21,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 06:12:21,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 06:12:21,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 06:12:21,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 06:12:21,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 06:12:21,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 06:12:21,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 06:12:21,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 06:12:21,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 06:12:21,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 06:12:21,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 06:12:21,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 06:12:21,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 06:12:21,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 06:12:21,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 06:12:21,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 06:12:21,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 06:12:21,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 06:12:21,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 06:12:21,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 06:12:21,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-07-05 06:12:21,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 06:12:21,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 06:12:21,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 06:12:21,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 06:12:21,339 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 06:12:21,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 06:12:21,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 06:12:21,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 06:12:21,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 06:12:21,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 06:12:21,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 06:12:21,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 06:12:21,342 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-07-05 06:12:21,342 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-07-05 06:12:21,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 06:12:21,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 06:12:21,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 06:12:21,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 06:12:21,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 06:12:21,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 06:12:21,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 06:12:21,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 06:12:21,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 06:12:21,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 06:12:21,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 06:12:21,344 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-07-05 06:12:21,344 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-07-05 06:12:21,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 06:12:21,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 06:12:21,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-05 06:12:21,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d861a67fd24091b9e1d344eca64b2dd8db9fc27c [2021-07-05 06:12:21,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 06:12:21,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 06:12:21,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 06:12:21,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 06:12:21,679 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 06:12:21,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-07-05 06:12:21,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a700aa395/23df12a4941d434dab747ec37643eb42/FLAG715f75cf6 [2021-07-05 06:12:22,235 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 06:12:22,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-07-05 06:12:22,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a700aa395/23df12a4941d434dab747ec37643eb42/FLAG715f75cf6 [2021-07-05 06:12:22,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a700aa395/23df12a4941d434dab747ec37643eb42 [2021-07-05 06:12:22,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 06:12:22,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 06:12:22,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 06:12:22,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 06:12:22,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 06:12:22,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d396826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22, skipping insertion in model container [2021-07-05 06:12:22,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 06:12:22,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 06:12:22,856 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-07-05 06:12:22,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 06:12:22,879 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 06:12:22,888 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-07-05 06:12:22,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 06:12:22,921 INFO L208 MainTranslator]: Completed translation [2021-07-05 06:12:22,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22 WrapperNode [2021-07-05 06:12:22,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 06:12:22,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 06:12:22,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 06:12:22,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 06:12:22,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 06:12:22,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 06:12:22,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 06:12:22,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 06:12:22,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 06:12:22,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 06:12:22,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 06:12:22,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 06:12:22,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (1/1) ... [2021-07-05 06:12:22,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 06:12:23,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 06:12:23,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-05 06:12:23,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-05 06:12:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-07-05 06:12:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 06:12:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 06:12:23,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 06:12:27,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 06:12:27,848 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-07-05 06:12:27,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 06:12:27 BoogieIcfgContainer [2021-07-05 06:12:27,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 06:12:27,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 06:12:27,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 06:12:27,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 06:12:27,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 06:12:22" (1/3) ... [2021-07-05 06:12:27,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43da2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 06:12:27, skipping insertion in model container [2021-07-05 06:12:27,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 06:12:22" (2/3) ... [2021-07-05 06:12:27,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43da2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 06:12:27, skipping insertion in model container [2021-07-05 06:12:27,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 06:12:27" (3/3) ... [2021-07-05 06:12:27,857 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-07-05 06:12:27,863 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 06:12:27,863 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-05 06:12:27,897 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 06:12:27,903 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 06:12:27,903 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 06:12:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 06:12:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 06:12:27,918 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 06:12:27,919 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 06:12:27,919 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 06:12:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 06:12:27,925 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-07-05 06:12:27,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-07-05 06:12:27,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794379709] [2021-07-05 06:12:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 06:12:27,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-07-05 06:12:27,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-07-05 06:12:27,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-07-05 06:12:27,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-07-05 06:12:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 06:12:30,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-05 06:12:30,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 06:12:30,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 06:12:30,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 06:12:30,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 06:12:30,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 06:12:30,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:30,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:30,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:30,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:30,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:34,606 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 13 [2021-07-05 06:12:34,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:34,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:34,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:34,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 06:12:34,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-07-05 06:12:34,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:34,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:34,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-07-05 06:12:34,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-05 06:12:34,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:36,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:36,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:36,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-05 06:12:39,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:39,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:39,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:39,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-05 06:12:39,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:39,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:39,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:39,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:39,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-05 06:12:41,112 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))))) is different from false [2021-07-05 06:12:41,123 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-07-05 06:12:41,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:41,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:41,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-05 06:12:41,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:41,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:41,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:41,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:41,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 06:12:41,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:43,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:43,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:43,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:43,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 06:12:45,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:45,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:45,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:45,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:45,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 06:12:45,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:45,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:45,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:45,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-07-05 06:12:47,300 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-07-05 06:12:49,340 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-07-05 06:12:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 06:12:49,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-07-05 06:12:49,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 06:12:49,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 06:12:49,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 06:12:49,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 06:12:49,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 06:12:49,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 06:12:49,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 06:12:49,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 06:12:49,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:49,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-07-05 06:12:49,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-05 06:12:49,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:49,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-07-05 06:12:49,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-05 06:12:49,538 INFO L142 QuantifierPusher]: treesize reduction 37, result has 45.6 percent of original size [2021-07-05 06:12:49,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-05 06:12:49,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:49,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-05 06:12:51,600 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2021-07-05 06:12:53,675 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2021-07-05 06:12:53,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-05 06:12:53,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-05 06:12:53,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-05 06:12:53,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-05 06:12:53,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:53,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-07-05 06:12:53,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-05 06:12:53,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:53,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-07-05 06:12:53,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-05 06:12:53,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:53,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-05 06:12:53,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:53,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:53,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-05 06:12:53,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:53,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 06:12:53,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 06:12:53,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-05 06:12:53,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-05 06:12:55,738 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-07-05 06:12:57,789 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2021-07-05 06:12:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 06:12:57,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-07-05 06:12:57,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794379709] [2021-07-05 06:12:57,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794379709] provided 2 perfect and 0 imperfect interpolant sequences [2021-07-05 06:12:57,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-07-05 06:12:57,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-07-05 06:12:57,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917953459] [2021-07-05 06:12:57,796 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-05 06:12:57,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-07-05 06:12:57,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-05 06:12:57,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=7, NotChecked=36, Total=72 [2021-07-05 06:12:57,809 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 06:13:00,629 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from false [2021-07-05 06:13:02,678 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from true [2021-07-05 06:13:04,730 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) is different from false [2021-07-05 06:13:06,792 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) is different from true [2021-07-05 06:13:11,048 WARN L205 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 26 DAG size of output: 3 [2021-07-05 06:13:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 06:13:24,529 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2021-07-05 06:13:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 06:13:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-05 06:13:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 06:13:24,535 INFO L225 Difference]: With dead ends: 34 [2021-07-05 06:13:24,535 INFO L226 Difference]: Without dead ends: 11 [2021-07-05 06:13:24,540 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31360.7ms TimeCoverageRelationStatistics Valid=23, Invalid=20, Unknown=11, NotChecked=78, Total=132 [2021-07-05 06:13:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-07-05 06:13:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-07-05 06:13:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 06:13:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-07-05 06:13:24,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-07-05 06:13:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 06:13:24,574 INFO L442 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-07-05 06:13:24,574 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 06:13:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-07-05 06:13:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-05 06:13:24,575 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 06:13:24,575 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-07-05 06:13:24,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-07-05 06:13:24,796 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-07-05 06:13:24,797 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 06:13:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 06:13:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-07-05 06:13:24,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-07-05 06:13:24,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668134429] [2021-07-05 06:13:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 06:13:24,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-07-05 06:13:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-07-05 06:13:24,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-07-05 06:13:24,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-07-05 06:13:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 06:13:33,410 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 06:13:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 06:13:48,992 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 06:13:49,081 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-07-05 06:13:49,082 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 06:13:49,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-07-05 06:13:49,286 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-07-05 06:13:49,286 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 06:13:49,289 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (1/2) [2021-07-05 06:13:49,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 06:13:49 BoogieIcfgContainer [2021-07-05 06:13:49,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 06:13:49,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 06:13:49,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 06:13:49,335 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 06:13:49,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 06:12:27" (3/4) ... [2021-07-05 06:13:49,338 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 06:13:49,400 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 06:13:49,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 06:13:49,410 INFO L168 Benchmark]: Toolchain (without parser) took 86684.08 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.6 MB in the beginning and 33.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-07-05 06:13:49,410 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 06:13:49,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.55 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 40.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 06:13:49,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 39.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 06:13:49,414 INFO L168 Benchmark]: Boogie Preprocessor took 20.75 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 37.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 06:13:49,414 INFO L168 Benchmark]: RCFGBuilder took 4860.92 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.7 MB in the beginning and 51.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-07-05 06:13:49,418 INFO L168 Benchmark]: TraceAbstraction took 81482.07 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 35.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-07-05 06:13:49,419 INFO L168 Benchmark]: Witness Printer took 74.17 ms. Allocated memory is still 69.2 MB. Free memory was 35.2 MB in the beginning and 33.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 06:13:49,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 194.55 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 40.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 39.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.75 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 37.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4860.92 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.7 MB in the beginning and 51.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 81482.07 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 35.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 74.17 ms. Allocated memory is still 69.2 MB. Free memory was 35.2 MB in the beginning and 33.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<2 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<2 [L17] COND TRUE !(cond) VAL [counter=2] [L19] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 81394.5ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 7.4ms, AutomataDifference: 26742.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 8 SDslu, 16 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 13982.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31360.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.1ms SsaConstructionTime, 10814.0ms SatisfiabilityAnalysisTime, 27576.4ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 3 QuantifiedInterpolants, 185 SizeOfPredicates, 6 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 6 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! [2021-07-05 06:13:49,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...