./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 6b5699aa 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 0.1.24-6b5699a [2019-11-21 21:18:04,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 21:18:04,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 21:18:04,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 21:18:04,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 21:18:04,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 21:18:04,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 21:18:04,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 21:18:04,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 21:18:04,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 21:18:04,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 21:18:04,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 21:18:04,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 21:18:04,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 21:18:04,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 21:18:04,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 21:18:04,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 21:18:04,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 21:18:04,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 21:18:04,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 21:18:04,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 21:18:04,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 21:18:04,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 21:18:04,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 21:18:04,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 21:18:04,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 21:18:04,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 21:18:04,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 21:18:04,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 21:18:04,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 21:18:04,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 21:18:04,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 21:18:04,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 21:18:04,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 21:18:04,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 21:18:04,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 21:18:04,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 21:18:04,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 21:18:04,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 21:18:04,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 21:18:04,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 21:18:04,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-21 21:18:05,011 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 21:18:05,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 21:18:05,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 21:18:05,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 21:18:05,013 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 21:18:05,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 21:18:05,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 21:18:05,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 21:18:05,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 21:18:05,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 21:18:05,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 21:18:05,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 21:18:05,015 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 21:18:05,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 21:18:05,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 21:18:05,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 21:18:05,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 21:18:05,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 21:18:05,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 21:18:05,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 21:18:05,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 21:18:05,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 21:18:05,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-21 21:18:05,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-21 21:18:05,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 21:18:05,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 21:18:05,019 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 [2019-11-21 21:18:05,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 21:18:05,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 21:18:05,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 21:18:05,332 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 21:18:05,333 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 21:18:05,334 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 21:18:05,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5abdca3/d8f51a932fea457d94dd676acd1d524e/FLAG0969e4d5f [2019-11-21 21:18:05,832 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 21:18:05,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 21:18:05,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5abdca3/d8f51a932fea457d94dd676acd1d524e/FLAG0969e4d5f [2019-11-21 21:18:06,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5abdca3/d8f51a932fea457d94dd676acd1d524e [2019-11-21 21:18:06,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 21:18:06,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 21:18:06,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 21:18:06,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 21:18:06,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 21:18:06,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f67ea3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06, skipping insertion in model container [2019-11-21 21:18:06,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 21:18:06,266 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 21:18:06,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 21:18:06,521 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 21:18:06,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 21:18:06,628 INFO L205 MainTranslator]: Completed translation [2019-11-21 21:18:06,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06 WrapperNode [2019-11-21 21:18:06,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 21:18:06,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 21:18:06,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 21:18:06,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 21:18:06,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 21:18:06,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 21:18:06,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 21:18:06,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 21:18:06,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (1/1) ... [2019-11-21 21:18:06,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 21:18:06,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 21:18:06,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 21:18:06,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 21:18:06,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (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 [2019-11-21 21:18:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 21:18:06,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 21:18:07,076 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 21:18:07,077 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-21 21:18:07,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:07 BoogieIcfgContainer [2019-11-21 21:18:07,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 21:18:07,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 21:18:07,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 21:18:07,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 21:18:07,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:18:06" (1/3) ... [2019-11-21 21:18:07,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5839f3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:18:07, skipping insertion in model container [2019-11-21 21:18:07,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:06" (2/3) ... [2019-11-21 21:18:07,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5839f3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:18:07, skipping insertion in model container [2019-11-21 21:18:07,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:07" (3/3) ... [2019-11-21 21:18:07,086 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-21 21:18:07,098 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 21:18:07,107 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-21 21:18:07,118 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-21 21:18:07,142 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 21:18:07,142 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 21:18:07,142 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 21:18:07,142 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 21:18:07,142 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 21:18:07,142 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 21:18:07,143 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 21:18:07,143 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 21:18:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-21 21:18:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 21:18:07,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 21:18:07,162 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 21:18:07,162 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]=== [2019-11-21 21:18:07,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 21:18:07,167 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 21:18:07,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 21:18:07,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274185435] [2019-11-21 21:18:07,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 21:18:07,240 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 21:18:07,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907221960] [2019-11-21 21:18:07,241 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 [2019-11-21 21:18:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 21:18:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 21:18:07,295 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-21 21:18:07,296 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 21:18:07,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 21:18:07,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:18:07 BoogieIcfgContainer [2019-11-21 21:18:07,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 21:18:07,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 21:18:07,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 21:18:07,518 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 21:18:07,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:07" (3/4) ... [2019-11-21 21:18:07,527 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 21:18:07,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 21:18:07,531 INFO L168 Benchmark]: Toolchain (without parser) took 1303.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -135.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2019-11-21 21:18:07,532 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-21 21:18:07,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-21 21:18:07,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.05 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. [2019-11-21 21:18:07,538 INFO L168 Benchmark]: Boogie Preprocessor took 36.61 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. [2019-11-21 21:18:07,539 INFO L168 Benchmark]: RCFGBuilder took 357.23 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-21 21:18:07,541 INFO L168 Benchmark]: TraceAbstraction took 438.12 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-21 21:18:07,541 INFO L168 Benchmark]: Witness Printer took 10.15 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. [2019-11-21 21:18:07,552 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 406.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.05 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 36.61 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 357.23 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 438.12 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 10.15 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: 0.3s, 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 0.1.24-6b5699a [2019-11-21 21:18:09,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 21:18:09,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 21:18:09,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 21:18:09,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 21:18:09,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 21:18:09,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 21:18:09,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 21:18:09,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 21:18:09,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 21:18:09,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 21:18:09,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 21:18:09,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 21:18:09,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 21:18:09,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 21:18:09,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 21:18:09,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 21:18:09,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 21:18:09,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 21:18:09,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 21:18:09,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 21:18:09,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 21:18:09,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 21:18:09,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 21:18:09,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 21:18:09,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 21:18:09,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 21:18:09,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 21:18:09,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 21:18:09,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 21:18:09,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 21:18:09,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 21:18:09,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 21:18:09,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 21:18:09,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 21:18:09,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 21:18:09,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 21:18:09,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 21:18:09,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 21:18:09,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 21:18:09,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 21:18:09,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-21 21:18:09,656 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 21:18:09,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 21:18:09,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 21:18:09,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 21:18:09,658 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 21:18:09,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 21:18:09,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 21:18:09,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 21:18:09,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 21:18:09,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 21:18:09,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-21 21:18:09,660 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 21:18:09,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 21:18:09,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 21:18:09,661 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 21:18:09,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 21:18:09,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 21:18:09,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 21:18:09,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 21:18:09,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 21:18:09,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 21:18:09,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 21:18:09,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 21:18:09,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 21:18:09,664 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 21:18:09,664 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 21:18:09,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 21:18:09,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 21:18:09,665 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-21 21:18:09,665 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 [2019-11-21 21:18:09,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 21:18:10,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 21:18:10,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 21:18:10,006 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 21:18:10,007 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 21:18:10,008 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 21:18:10,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b94f517c0/b3890a6b35684487874b00a4357f033b/FLAGbae0ba33a [2019-11-21 21:18:10,522 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 21:18:10,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 21:18:10,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b94f517c0/b3890a6b35684487874b00a4357f033b/FLAGbae0ba33a [2019-11-21 21:18:10,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b94f517c0/b3890a6b35684487874b00a4357f033b [2019-11-21 21:18:10,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 21:18:10,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 21:18:10,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 21:18:10,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 21:18:10,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 21:18:10,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:18:10" (1/1) ... [2019-11-21 21:18:10,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726f098d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:10, skipping insertion in model container [2019-11-21 21:18:10,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:18:10" (1/1) ... [2019-11-21 21:18:10,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 21:18:10,917 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 21:18:11,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 21:18:11,146 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 21:18:11,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 21:18:11,255 INFO L205 MainTranslator]: Completed translation [2019-11-21 21:18:11,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11 WrapperNode [2019-11-21 21:18:11,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 21:18:11,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 21:18:11,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 21:18:11,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 21:18:11,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 21:18:11,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 21:18:11,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 21:18:11,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 21:18:11,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (1/1) ... [2019-11-21 21:18:11,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 21:18:11,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 21:18:11,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 21:18:11,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 21:18:11,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (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 [2019-11-21 21:18:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 21:18:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 21:18:21,607 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 21:18:21,608 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-21 21:18:21,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:21 BoogieIcfgContainer [2019-11-21 21:18:21,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 21:18:21,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 21:18:21,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 21:18:21,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 21:18:21,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:18:10" (1/3) ... [2019-11-21 21:18:21,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f1dc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:18:21, skipping insertion in model container [2019-11-21 21:18:21,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:11" (2/3) ... [2019-11-21 21:18:21,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f1dc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:18:21, skipping insertion in model container [2019-11-21 21:18:21,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:21" (3/3) ... [2019-11-21 21:18:21,617 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-21 21:18:21,625 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 21:18:21,631 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-21 21:18:21,642 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-21 21:18:21,669 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 21:18:21,670 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 21:18:21,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 21:18:21,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 21:18:21,671 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 21:18:21,671 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 21:18:21,671 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 21:18:21,671 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 21:18:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-21 21:18:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-21 21:18:21,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 21:18:21,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-21 21:18:21,692 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]=== [2019-11-21 21:18:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 21:18:21,698 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-21 21:18:21,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 21:18:21,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100778614] [2019-11-21 21:18:21,707 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 [2019-11-21 21:18:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 21:18:21,849 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 21:18:21,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 21:18:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 21:18:21,978 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 21:18:25,022 WARN L192 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-21 21:18:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 21:18:25,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100778614] [2019-11-21 21:18:25,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 21:18:25,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-21 21:18:25,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207320472] [2019-11-21 21:18:25,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-21 21:18:25,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 21:18:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-21 21:18:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-21 21:18:25,060 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-21 21:18:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 21:18:44,064 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-21 21:18:44,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 21:18:44,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-21 21:18:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 21:18:44,074 INFO L225 Difference]: With dead ends: 67 [2019-11-21 21:18:44,075 INFO L226 Difference]: Without dead ends: 34 [2019-11-21 21:18:44,078 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 [2019-11-21 21:18:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-21 21:18:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-21 21:18:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-21 21:18:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-21 21:18:44,118 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-21 21:18:44,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 21:18:44,118 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-21 21:18:44,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-21 21:18:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-21 21:18:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-21 21:18:44,120 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 21:18:44,120 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-21 21:18:44,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-21 21:18:44,336 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]=== [2019-11-21 21:18:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 21:18:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-21 21:18:44,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 21:18:44,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401457181] [2019-11-21 21:18:44,338 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 [2019-11-21 21:18:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 21:18:45,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 21:18:45,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 21:18:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 21:18:46,793 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 21:18:50,296 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 [2019-11-21 21:18:50,891 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 [2019-11-21 21:18:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 21:18:51,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401457181] [2019-11-21 21:18:51,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 21:18:51,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-21 21:18:51,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157126166] [2019-11-21 21:18:51,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 21:18:51,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 21:18:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 21:18:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2019-11-21 21:18:51,398 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-21 21:18:55,869 WARN L192 SmtUtils]: Spent 2.52 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-21 21:19:08,633 WARN L192 SmtUtils]: Spent 5.01 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-21 21:19:23,602 WARN L192 SmtUtils]: Spent 8.92 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-21 21:19:26,671 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse0) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (not .cse0) (= (_ 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 ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse1 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 [2019-11-21 21:19:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 21:19:41,761 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-21 21:19:41,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 21:19:41,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-21 21:19:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 21:19:41,762 INFO L225 Difference]: With dead ends: 32 [2019-11-21 21:19:41,763 INFO L226 Difference]: Without dead ends: 29 [2019-11-21 21:19:41,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=33, Invalid=65, Unknown=4, NotChecked=54, Total=156 [2019-11-21 21:19:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-21 21:19:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-21 21:19:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-21 21:19:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-21 21:19:41,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-21 21:19:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 21:19:41,772 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-21 21:19:41,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 21:19:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-21 21:19:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-21 21:19:41,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 21:19:41,773 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 21:19:41,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-21 21:19:41,987 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]=== [2019-11-21 21:19:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 21:19:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-21 21:19:41,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 21:19:41,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257998257] [2019-11-21 21:19:41,990 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 [2019-11-21 21:19:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 21:19:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 21:19:44,807 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 21:19:44,807 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 21:19:45,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-21 21:19:45,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:19:45 BoogieIcfgContainer [2019-11-21 21:19:45,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 21:19:45,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 21:19:45,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 21:19:45,029 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 21:19:45,029 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:21" (3/4) ... [2019-11-21 21:19:45,032 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-21 21:19:45,073 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 21:19:45,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 21:19:45,075 INFO L168 Benchmark]: Toolchain (without parser) took 94194.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -72.8 MB). Peak memory consumption was 80.2 MB. Max. memory is 11.5 GB. [2019-11-21 21:19:45,076 INFO L168 Benchmark]: CDTParser took 0.35 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. [2019-11-21 21:19:45,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-11-21 21:19:45,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.59 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. [2019-11-21 21:19:45,078 INFO L168 Benchmark]: Boogie Preprocessor took 32.75 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. [2019-11-21 21:19:45,079 INFO L168 Benchmark]: RCFGBuilder took 10276.69 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-21 21:19:45,080 INFO L168 Benchmark]: TraceAbstraction took 83417.76 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: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. [2019-11-21 21:19:45,081 INFO L168 Benchmark]: Witness Printer took 45.23 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. [2019-11-21 21:19:45,085 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 374.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.59 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 32.75 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 10276.69 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 83417.76 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: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. * Witness Printer took 45.23 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: 83.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 69.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 43 SDslu, 66 SDs, 0 SdLazy, 72 SolverSat, 22 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 36.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 39.7s 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, 2.4s SatisfiabilityAnalysisTime, 9.1s 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...