./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7c71bc25 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................. 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-7c71bc2 [2019-11-25 13:19:30,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 13:19:30,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 13:19:30,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 13:19:30,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 13:19:30,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 13:19:30,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 13:19:30,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 13:19:30,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 13:19:30,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 13:19:30,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 13:19:30,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 13:19:30,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 13:19:30,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 13:19:30,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 13:19:30,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 13:19:30,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 13:19:30,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 13:19:30,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 13:19:30,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 13:19:30,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 13:19:30,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 13:19:30,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 13:19:30,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 13:19:30,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 13:19:30,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 13:19:30,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 13:19:30,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 13:19:30,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 13:19:30,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 13:19:30,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 13:19:30,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 13:19:30,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 13:19:30,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 13:19:30,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 13:19:30,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 13:19:30,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 13:19:30,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 13:19:30,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 13:19:30,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 13:19:30,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 13:19:30,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-25 13:19:30,571 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 13:19:30,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 13:19:30,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 13:19:30,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 13:19:30,573 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 13:19:30,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 13:19:30,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 13:19:30,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 13:19:30,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 13:19:30,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 13:19:30,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 13:19:30,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 13:19:30,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 13:19:30,576 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 13:19:30,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 13:19:30,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 13:19:30,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 13:19:30,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 13:19:30,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 13:19:30,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 13:19:30,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 13:19:30,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 13:19:30,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 13:19:30,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 13:19:30,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 13:19:30,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 13:19:30,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 13:19:30,580 INFO L138 SettingsManager]: * To the following directory=dump/ 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(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-25 13:19:30,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 13:19:30,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 13:19:30,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 13:19:30,900 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 13:19:30,900 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 13:19:30,901 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-25 13:19:30,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db925bdae/7ed4af2bbb964f79b67d6f28ab0ec2e7/FLAGe20adfaec [2019-11-25 13:19:31,471 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 13:19:31,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-25 13:19:31,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db925bdae/7ed4af2bbb964f79b67d6f28ab0ec2e7/FLAGe20adfaec [2019-11-25 13:19:31,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db925bdae/7ed4af2bbb964f79b67d6f28ab0ec2e7 [2019-11-25 13:19:31,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 13:19:31,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 13:19:31,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 13:19:31,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 13:19:31,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 13:19:31,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 01:19:31" (1/1) ... [2019-11-25 13:19:31,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad95f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:31, skipping insertion in model container [2019-11-25 13:19:31,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 01:19:31" (1/1) ... [2019-11-25 13:19:31,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 13:19:31,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-25 13:19:32,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 13:19:32,130 INFO L203 MainTranslator]: Completed pre-run [2019-11-25 13:19:32,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 13:19:32,228 INFO L208 MainTranslator]: Completed translation [2019-11-25 13:19:32,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32 WrapperNode [2019-11-25 13:19:32,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 13:19:32,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 13:19:32,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 13:19:32,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 13:19:32,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 13:19:32,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 13:19:32,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 13:19:32,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 13:19:32,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... [2019-11-25 13:19:32,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 13:19:32,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 13:19:32,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 13:19:32,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 13:19:32,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 13:19:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 13:19:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 13:19:32,589 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 13:19:32,590 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-25 13:19:32,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 01:19:32 BoogieIcfgContainer [2019-11-25 13:19:32,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 13:19:32,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 13:19:32,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 13:19:32,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 13:19:32,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 01:19:31" (1/3) ... [2019-11-25 13:19:32,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0beb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 01:19:32, skipping insertion in model container [2019-11-25 13:19:32,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:32" (2/3) ... [2019-11-25 13:19:32,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0beb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 01:19:32, skipping insertion in model container [2019-11-25 13:19:32,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 01:19:32" (3/3) ... [2019-11-25 13:19:32,600 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-25 13:19:32,611 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 13:19:32,619 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-25 13:19:32,641 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-25 13:19:32,685 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 13:19:32,685 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 13:19:32,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 13:19:32,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 13:19:32,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 13:19:32,687 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 13:19:32,687 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 13:19:32,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 13:19:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-25 13:19:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 13:19:32,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 13:19:32,716 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 13:19:32,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 13:19:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 13:19:32,724 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-25 13:19:32,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 13:19:32,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399624717] [2019-11-25 13:19:32,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 13:19:32,816 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 13:19:32,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962566597] [2019-11-25 13:19:32,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 13:19:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 13:19:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 13:19:32,894 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 13:19:32,895 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 13:19:33,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 13:19:33,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 01:19:33 BoogieIcfgContainer [2019-11-25 13:19:33,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 13:19:33,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 13:19:33,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 13:19:33,118 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 13:19:33,119 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 01:19:32" (3/4) ... [2019-11-25 13:19:33,123 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 13:19:33,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 13:19:33,126 INFO L168 Benchmark]: Toolchain (without parser) took 1267.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -150.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:19:33,126 INFO L168 Benchmark]: CDTParser took 1.59 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:19:33,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -192.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-25 13:19:33,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-25 13:19:33,131 INFO L168 Benchmark]: Boogie Preprocessor took 24.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:19:33,131 INFO L168 Benchmark]: RCFGBuilder took 296.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-25 13:19:33,133 INFO L168 Benchmark]: TraceAbstraction took 524.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-25 13:19:33,134 INFO L168 Benchmark]: Witness Printer took 5.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:19:33,140 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.59 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -192.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 296.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 524.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-7c71bc2 [2019-11-25 13:19:35,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 13:19:35,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 13:19:35,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 13:19:35,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 13:19:35,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 13:19:35,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 13:19:35,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 13:19:35,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 13:19:35,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 13:19:35,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 13:19:35,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 13:19:35,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 13:19:35,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 13:19:35,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 13:19:35,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 13:19:35,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 13:19:35,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 13:19:35,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 13:19:35,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 13:19:35,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 13:19:35,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 13:19:35,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 13:19:35,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 13:19:35,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 13:19:35,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 13:19:35,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 13:19:35,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 13:19:35,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 13:19:35,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 13:19:35,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 13:19:35,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 13:19:35,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 13:19:35,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 13:19:35,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 13:19:35,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 13:19:35,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 13:19:35,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 13:19:35,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 13:19:35,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 13:19:35,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 13:19:35,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-25 13:19:35,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 13:19:35,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 13:19:35,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 13:19:35,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 13:19:35,274 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 13:19:35,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 13:19:35,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 13:19:35,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 13:19:35,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 13:19:35,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 13:19:35,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 13:19:35,277 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 13:19:35,277 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 13:19:35,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 13:19:35,278 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 13:19:35,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 13:19:35,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 13:19:35,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 13:19:35,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 13:19:35,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 13:19:35,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 13:19:35,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 13:19:35,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 13:19:35,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 13:19:35,282 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 13:19:35,282 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 13:19:35,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 13:19:35,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 13:19:35,283 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-25 13:19:35,283 INFO L138 SettingsManager]: * To the following directory=dump/ 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(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-25 13:19:35,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 13:19:35,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 13:19:35,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 13:19:35,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 13:19:35,608 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 13:19:35,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-25 13:19:35,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8a97b39/5b1a5fb8faff4461af255a5543c5c951/FLAG12011266d [2019-11-25 13:19:36,119 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 13:19:36,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-25 13:19:36,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8a97b39/5b1a5fb8faff4461af255a5543c5c951/FLAG12011266d [2019-11-25 13:19:36,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8a97b39/5b1a5fb8faff4461af255a5543c5c951 [2019-11-25 13:19:36,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 13:19:36,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 13:19:36,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 13:19:36,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 13:19:36,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 13:19:36,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e6bd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36, skipping insertion in model container [2019-11-25 13:19:36,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 13:19:36,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-25 13:19:36,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 13:19:36,742 INFO L203 MainTranslator]: Completed pre-run [2019-11-25 13:19:36,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 13:19:36,865 INFO L208 MainTranslator]: Completed translation [2019-11-25 13:19:36,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36 WrapperNode [2019-11-25 13:19:36,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 13:19:36,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 13:19:36,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 13:19:36,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 13:19:36,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 13:19:36,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 13:19:36,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 13:19:36,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 13:19:36,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... [2019-11-25 13:19:36,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 13:19:36,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 13:19:36,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 13:19:36,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 13:19:36,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 13:19:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 13:19:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 13:19:45,359 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 13:19:45,359 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-25 13:19:45,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 01:19:45 BoogieIcfgContainer [2019-11-25 13:19:45,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 13:19:45,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 13:19:45,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 13:19:45,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 13:19:45,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 01:19:36" (1/3) ... [2019-11-25 13:19:45,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d37e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 01:19:45, skipping insertion in model container [2019-11-25 13:19:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 01:19:36" (2/3) ... [2019-11-25 13:19:45,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d37e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 01:19:45, skipping insertion in model container [2019-11-25 13:19:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 01:19:45" (3/3) ... [2019-11-25 13:19:45,369 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-25 13:19:45,379 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 13:19:45,386 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-25 13:19:45,398 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-25 13:19:45,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 13:19:45,424 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 13:19:45,424 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 13:19:45,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 13:19:45,425 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 13:19:45,425 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 13:19:45,425 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 13:19:45,425 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 13:19:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-25 13:19:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 13:19:45,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 13:19:45,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 13:19:45,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 13:19:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 13:19:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-25 13:19:45,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 13:19:45,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049230050] [2019-11-25 13:19:45,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-25 13:19:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 13:19:45,603 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 13:19:45,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 13:19:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 13:19:45,721 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 13:19:48,869 WARN L192 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-25 13:19:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 13:19:48,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049230050] [2019-11-25 13:19:48,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 13:19:48,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-25 13:19:48,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892762616] [2019-11-25 13:19:48,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 13:19:48,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 13:19:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 13:19:48,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 13:19:48,906 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-25 13:20:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 13:20:08,726 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-25 13:20:08,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 13:20:08,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-25 13:20:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 13:20:08,738 INFO L225 Difference]: With dead ends: 67 [2019-11-25 13:20:08,738 INFO L226 Difference]: Without dead ends: 34 [2019-11-25 13:20:08,742 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-25 13:20:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-25 13:20:08,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-25 13:20:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 13:20:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-25 13:20:08,784 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-25 13:20:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 13:20:08,785 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-25 13:20:08,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 13:20:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-25 13:20:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 13:20:08,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 13:20:08,786 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 13:20:09,000 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 13:20:09,001 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 13:20:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 13:20:09,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-25 13:20:09,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 13:20:09,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148506563] [2019-11-25 13:20:09,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-25 13:20:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 13:20:10,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 13:20:10,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 13:20:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 13:20:10,892 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 13:20:27,258 WARN L192 SmtUtils]: Spent 3.92 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-25 13:20:27,918 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))))) is different from false [2019-11-25 13:20:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 13:20:28,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148506563] [2019-11-25 13:20:28,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 13:20:28,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-25 13:20:28,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262268983] [2019-11-25 13:20:28,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 13:20:28,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 13:20:28,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 13:20:28,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2019-11-25 13:20:28,623 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-25 13:20:37,905 WARN L192 SmtUtils]: Spent 3.20 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-25 13:20:42,020 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-11-25 13:21:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 13:21:26,094 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-25 13:21:26,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 13:21:26,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-25 13:21:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 13:21:26,097 INFO L225 Difference]: With dead ends: 32 [2019-11-25 13:21:26,097 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 13:21:26,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=23, Invalid=52, Unknown=5, NotChecked=30, Total=110 [2019-11-25 13:21:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 13:21:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-25 13:21:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 13:21:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-25 13:21:26,107 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-25 13:21:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 13:21:26,108 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-25 13:21:26,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 13:21:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-25 13:21:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 13:21:26,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 13:21:26,109 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 13:21:26,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 13:21:26,315 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 13:21:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 13:21:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-25 13:21:26,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 13:21:26,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560916823] [2019-11-25 13:21:26,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-25 13:21:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 13:21:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 13:21:29,150 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 13:21:29,150 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 13:21:29,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 13:21:29,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 01:21:29 BoogieIcfgContainer [2019-11-25 13:21:29,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 13:21:29,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 13:21:29,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 13:21:29,382 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 13:21:29,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 01:19:45" (3/4) ... [2019-11-25 13:21:29,385 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 13:21:29,430 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-25 13:21:29,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 13:21:29,432 INFO L168 Benchmark]: Toolchain (without parser) took 112933.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -66.6 MB). Peak memory consumption was 74.4 MB. Max. memory is 11.5 GB. [2019-11-25 13:21:29,433 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:21:29,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-25 13:21:29,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:21:29,435 INFO L168 Benchmark]: Boogie Preprocessor took 31.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:21:29,436 INFO L168 Benchmark]: RCFGBuilder took 8422.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-25 13:21:29,437 INFO L168 Benchmark]: TraceAbstraction took 104018.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 11.5 GB. [2019-11-25 13:21:29,437 INFO L168 Benchmark]: Witness Printer took 49.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 13:21:29,441 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 365.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8422.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 104018.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 11.5 GB. * Witness Printer took 49.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Result: UNSAFE, OverallTime: 103.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 77.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 40 SDslu, 71 SDs, 0 SdLazy, 85 SolverSat, 20 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 63.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 33.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1208 SizeOfPredicates, 11 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...