./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 5a079682 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 0.1.24-5a07968 [2019-11-22 11:01:00,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 11:01:00,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 11:01:00,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 11:01:00,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 11:01:00,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 11:01:00,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 11:01:00,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 11:01:00,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 11:01:00,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 11:01:00,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 11:01:00,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 11:01:00,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 11:01:00,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 11:01:00,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 11:01:00,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 11:01:00,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 11:01:00,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 11:01:00,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 11:01:00,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 11:01:00,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 11:01:00,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 11:01:00,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 11:01:00,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 11:01:00,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 11:01:00,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 11:01:00,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 11:01:00,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 11:01:00,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 11:01:00,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 11:01:00,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 11:01:00,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 11:01:00,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 11:01:00,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 11:01:00,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 11:01:00,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 11:01:00,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 11:01:00,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 11:01:00,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 11:01:00,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 11:01:00,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 11:01:00,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-22 11:01:00,907 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 11:01:00,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 11:01:00,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 11:01:00,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 11:01:00,909 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 11:01:00,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 11:01:00,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-22 11:01:00,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 11:01:00,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 11:01:00,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 11:01:00,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 11:01:00,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 11:01:00,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 11:01:00,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 11:01:00,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 11:01:00,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 11:01:00,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 11:01:00,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 11:01:00,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 11:01:00,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 11:01:00,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 11:01:00,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 11:01:00,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 11:01:00,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-22 11:01:00,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-22 11:01:00,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 11:01:00,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 11:01:00,917 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 [2019-11-22 11:01:01,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 11:01:01,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 11:01:01,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 11:01:01,268 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 11:01:01,269 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 11:01:01,270 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:01:01,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118a16f5c/4dc4199f30e94396b6544daf8ca62c2f/FLAG22e309e3b [2019-11-22 11:01:01,809 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 11:01:01,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:01:01,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118a16f5c/4dc4199f30e94396b6544daf8ca62c2f/FLAG22e309e3b [2019-11-22 11:01:02,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118a16f5c/4dc4199f30e94396b6544daf8ca62c2f [2019-11-22 11:01:02,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 11:01:02,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 11:01:02,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 11:01:02,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 11:01:02,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 11:01:02,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c60f834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02, skipping insertion in model container [2019-11-22 11:01:02,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 11:01:02,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-22 11:01:02,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:01:02,503 INFO L203 MainTranslator]: Completed pre-run [2019-11-22 11:01:02,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:01:02,642 INFO L208 MainTranslator]: Completed translation [2019-11-22 11:01:02,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02 WrapperNode [2019-11-22 11:01:02,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 11:01:02,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 11:01:02,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 11:01:02,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 11:01:02,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 11:01:02,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 11:01:02,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 11:01:02,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 11:01:02,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (1/1) ... [2019-11-22 11:01:02,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 11:01:02,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 11:01:02,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 11:01:02,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 11:01:02,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (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 [2019-11-22 11:01:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 11:01:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 11:01:03,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 11:01:03,056 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 11:01:03,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:01:03 BoogieIcfgContainer [2019-11-22 11:01:03,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 11:01:03,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 11:01:03,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 11:01:03,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 11:01:03,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:01:02" (1/3) ... [2019-11-22 11:01:03,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dbc027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:01:03, skipping insertion in model container [2019-11-22 11:01:03,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:02" (2/3) ... [2019-11-22 11:01:03,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dbc027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:01:03, skipping insertion in model container [2019-11-22 11:01:03,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:01:03" (3/3) ... [2019-11-22 11:01:03,070 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 11:01:03,081 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 11:01:03,098 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 11:01:03,131 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 11:01:03,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 11:01:03,165 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 11:01:03,165 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 11:01:03,167 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 11:01:03,167 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 11:01:03,168 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 11:01:03,168 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 11:01:03,168 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 11:01:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-22 11:01:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-22 11:01:03,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:01:03,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-22 11:01:03,193 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]=== [2019-11-22 11:01:03,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:01:03,200 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-22 11:01:03,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 11:01:03,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745093534] [2019-11-22 11:01:03,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 11:01:03,291 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-22 11:01:03,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177614719] [2019-11-22 11:01:03,293 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 [2019-11-22 11:01:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:01:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:01:03,351 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-22 11:01:03,352 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 11:01:03,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 11:01:03,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:01:03 BoogieIcfgContainer [2019-11-22 11:01:03,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 11:01:03,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 11:01:03,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 11:01:03,572 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 11:01:03,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:01:03" (3/4) ... [2019-11-22 11:01:03,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-22 11:01:03,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 11:01:03,580 INFO L168 Benchmark]: Toolchain (without parser) took 1376.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -115.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-22 11:01:03,581 INFO L168 Benchmark]: CDTParser took 0.26 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. [2019-11-22 11:01:03,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-22 11:01:03,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 11:01:03,584 INFO L168 Benchmark]: Boogie Preprocessor took 37.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-22 11:01:03,585 INFO L168 Benchmark]: RCFGBuilder took 329.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-22 11:01:03,586 INFO L168 Benchmark]: TraceAbstraction took 512.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-11-22 11:01:03,586 INFO L168 Benchmark]: Witness Printer took 5.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 11:01:03,591 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 439.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 329.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 512.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.68 ms. Allocated memory is still 1.1 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 0.1.24-5a07968 [2019-11-22 11:01:05,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 11:01:05,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 11:01:05,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 11:01:05,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 11:01:05,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 11:01:05,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 11:01:05,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 11:01:05,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 11:01:05,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 11:01:05,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 11:01:05,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 11:01:05,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 11:01:05,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 11:01:05,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 11:01:05,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 11:01:05,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 11:01:05,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 11:01:05,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 11:01:05,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 11:01:05,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 11:01:05,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 11:01:05,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 11:01:05,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 11:01:05,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 11:01:05,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 11:01:05,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 11:01:05,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 11:01:05,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 11:01:05,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 11:01:05,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 11:01:05,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 11:01:05,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 11:01:05,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 11:01:05,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 11:01:05,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 11:01:05,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 11:01:05,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 11:01:05,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 11:01:05,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 11:01:05,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 11:01:05,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-22 11:01:05,662 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 11:01:05,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 11:01:05,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 11:01:05,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 11:01:05,668 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 11:01:05,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 11:01:05,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 11:01:05,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 11:01:05,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 11:01:05,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 11:01:05,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 11:01:05,671 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-22 11:01:05,671 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-22 11:01:05,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 11:01:05,672 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 11:01:05,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 11:01:05,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 11:01:05,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 11:01:05,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 11:01:05,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 11:01:05,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 11:01:05,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 11:01:05,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 11:01:05,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 11:01:05,675 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-22 11:01:05,676 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-22 11:01:05,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 11:01:05,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 11:01:05,677 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-22 11:01:05,677 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 [2019-11-22 11:01:05,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 11:01:06,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 11:01:06,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 11:01:06,016 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 11:01:06,016 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 11:01:06,017 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:01:06,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333be1b2e/538f1ec2182e414293320a61e98e46d7/FLAG611067589 [2019-11-22 11:01:06,566 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 11:01:06,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:01:06,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333be1b2e/538f1ec2182e414293320a61e98e46d7/FLAG611067589 [2019-11-22 11:01:06,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333be1b2e/538f1ec2182e414293320a61e98e46d7 [2019-11-22 11:01:06,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 11:01:06,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 11:01:06,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 11:01:06,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 11:01:06,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 11:01:06,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:01:06" (1/1) ... [2019-11-22 11:01:06,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453b4ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:06, skipping insertion in model container [2019-11-22 11:01:06,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:01:06" (1/1) ... [2019-11-22 11:01:06,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 11:01:06,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-22 11:01:07,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:01:07,228 INFO L203 MainTranslator]: Completed pre-run [2019-11-22 11:01:07,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:01:07,347 INFO L208 MainTranslator]: Completed translation [2019-11-22 11:01:07,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07 WrapperNode [2019-11-22 11:01:07,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 11:01:07,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 11:01:07,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 11:01:07,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 11:01:07,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 11:01:07,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 11:01:07,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 11:01:07,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 11:01:07,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (1/1) ... [2019-11-22 11:01:07,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 11:01:07,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 11:01:07,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 11:01:07,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 11:01:07,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (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 [2019-11-22 11:01:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 11:01:07,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 11:01:17,226 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 11:01:17,227 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 11:01:17,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:01:17 BoogieIcfgContainer [2019-11-22 11:01:17,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 11:01:17,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 11:01:17,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 11:01:17,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 11:01:17,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:01:06" (1/3) ... [2019-11-22 11:01:17,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3d1f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:01:17, skipping insertion in model container [2019-11-22 11:01:17,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:01:07" (2/3) ... [2019-11-22 11:01:17,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3d1f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:01:17, skipping insertion in model container [2019-11-22 11:01:17,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:01:17" (3/3) ... [2019-11-22 11:01:17,236 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 11:01:17,245 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 11:01:17,252 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 11:01:17,265 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 11:01:17,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 11:01:17,291 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 11:01:17,291 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 11:01:17,291 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 11:01:17,291 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 11:01:17,292 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 11:01:17,292 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 11:01:17,292 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 11:01:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-22 11:01:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-22 11:01:17,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:01:17,312 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-22 11:01:17,312 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]=== [2019-11-22 11:01:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:01:17,317 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-22 11:01:17,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 11:01:17,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205307934] [2019-11-22 11:01:17,327 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 [2019-11-22 11:01:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 11:01:17,456 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 11:01:17,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 11:01:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 11:01:17,593 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 11:01:20,608 WARN L192 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-22 11:01:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 11:01:20,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205307934] [2019-11-22 11:01:20,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 11:01:20,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-22 11:01:20,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355080217] [2019-11-22 11:01:20,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-22 11:01:20,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 11:01:20,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-22 11:01:20,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-22 11:01:20,650 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-22 11:01:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 11:01:41,401 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-22 11:01:41,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-22 11:01:41,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-22 11:01:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 11:01:41,412 INFO L225 Difference]: With dead ends: 67 [2019-11-22 11:01:41,413 INFO L226 Difference]: Without dead ends: 34 [2019-11-22 11:01:41,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-22 11:01:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-22 11:01:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-22 11:01:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-22 11:01:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-22 11:01:41,453 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-22 11:01:41,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 11:01:41,453 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-22 11:01:41,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-22 11:01:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-22 11:01:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-22 11:01:41,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:01:41,454 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-22 11:01:41,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-22 11:01:41,664 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]=== [2019-11-22 11:01:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:01:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-22 11:01:41,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 11:01:41,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476456091] [2019-11-22 11:01:41,667 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 [2019-11-22 11:01:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 11:01:42,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 11:01:42,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 11:01:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 11:01:43,692 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 11:01:46,654 WARN L860 $PredicateComparison]: unable to prove that (= (_ 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)))) is different from true [2019-11-22 11:01:47,280 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 [2019-11-22 11:01:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 11:01:47,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476456091] [2019-11-22 11:01:47,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 11:01:47,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-22 11:01:47,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716570469] [2019-11-22 11:01:47,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-22 11:01:47,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 11:01:47,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-22 11:01:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2019-11-22 11:01:47,924 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-22 11:01:52,508 WARN L192 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-22 11:02:07,018 WARN L192 SmtUtils]: Spent 7.04 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-22 11:02:16,792 WARN L192 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-22 11:02:33,939 WARN L192 SmtUtils]: Spent 13.11 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-22 11:02:37,256 WARN L192 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2019-11-22 11:02:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 11:02:49,715 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-22 11:02:49,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-22 11:02:49,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-22 11:02:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 11:02:49,718 INFO L225 Difference]: With dead ends: 33 [2019-11-22 11:02:49,718 INFO L226 Difference]: Without dead ends: 30 [2019-11-22 11:02:49,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=48, Invalid=89, Unknown=3, NotChecked=42, Total=182 [2019-11-22 11:02:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-22 11:02:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-22 11:02:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-22 11:02:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-22 11:02:49,727 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-22 11:02:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 11:02:49,727 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-22 11:02:49,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-22 11:02:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-22 11:02:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-22 11:02:49,728 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:02:49,729 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 11:02:49,942 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-22 11:02:49,943 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]=== [2019-11-22 11:02:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:02:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-22 11:02:49,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 11:02:49,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386301554] [2019-11-22 11:02:49,947 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 [2019-11-22 11:02:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:02:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:02:52,740 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-22 11:02:52,740 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 11:02:52,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-22 11:02:52,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:02:52 BoogieIcfgContainer [2019-11-22 11:02:52,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 11:02:52,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 11:02:52,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 11:02:52,964 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 11:02:52,965 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:01:17" (3/4) ... [2019-11-22 11:02:52,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-22 11:02:53,010 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-22 11:02:53,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 11:02:53,012 INFO L168 Benchmark]: Toolchain (without parser) took 106066.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -48.3 MB). Peak memory consumption was 90.1 MB. Max. memory is 11.5 GB. [2019-11-22 11:02:53,012 INFO L168 Benchmark]: CDTParser took 0.77 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. [2019-11-22 11:02:53,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-22 11:02:53,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.73 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. [2019-11-22 11:02:53,015 INFO L168 Benchmark]: Boogie Preprocessor took 43.52 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. [2019-11-22 11:02:53,016 INFO L168 Benchmark]: RCFGBuilder took 9790.49 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-22 11:02:53,017 INFO L168 Benchmark]: TraceAbstraction took 95734.55 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: 96.5 MB). Peak memory consumption was 96.5 MB. Max. memory is 11.5 GB. [2019-11-22 11:02:53,018 INFO L168 Benchmark]: Witness Printer took 46.31 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. [2019-11-22 11:02:53,021 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 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 401.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.73 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 43.52 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 9790.49 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 95734.55 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: 96.5 MB). Peak memory consumption was 96.5 MB. Max. memory is 11.5 GB. * Witness Printer took 46.31 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: 95.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 82.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 41 SDslu, 72 SDs, 0 SdLazy, 72 SolverSat, 24 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 36.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 52.4s 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 8.2s 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...