./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 701f399f 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-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --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-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --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 0.1.24-701f399 [2019-11-22 10:04:54,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 10:04:54,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 10:04:54,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 10:04:54,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 10:04:54,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 10:04:54,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 10:04:54,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 10:04:54,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 10:04:54,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 10:04:54,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 10:04:54,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 10:04:54,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 10:04:54,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 10:04:54,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 10:04:54,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 10:04:54,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 10:04:54,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 10:04:54,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 10:04:54,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 10:04:54,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 10:04:54,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 10:04:54,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 10:04:54,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 10:04:54,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 10:04:54,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 10:04:54,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 10:04:54,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 10:04:54,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 10:04:54,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 10:04:54,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 10:04:54,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 10:04:54,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 10:04:54,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 10:04:54,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 10:04:54,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 10:04:54,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 10:04:54,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 10:04:54,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 10:04:54,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 10:04:54,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 10:04:54,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-22 10:04:54,700 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 10:04:54,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 10:04:54,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 10:04:54,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 10:04:54,702 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 10:04:54,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 10:04:54,703 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-22 10:04:54,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-22 10:04:54,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-22 10:04:54,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 10:04:54,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 10:04:54,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 10:04:54,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 10:04:54,705 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-22 10:04:54,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 10:04:54,705 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 10:04:54,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 10:04:54,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 10:04:54,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 10:04:54,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 10:04:54,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 10:04:54,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 10:04:54,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 10:04:54,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 10:04:54,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 10:04:54,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-22 10:04:54,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-22 10:04:54,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 10:04:54,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-22 10:04:55,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 10:04:55,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 10:04:55,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 10:04:55,056 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 10:04:55,056 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 10:04:55,057 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 10:04:55,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73de00bfa/4d74bcc450ac497799444c026cc29908/FLAG28900427c [2019-11-22 10:04:55,591 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 10:04:55,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 10:04:55,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73de00bfa/4d74bcc450ac497799444c026cc29908/FLAG28900427c [2019-11-22 10:04:56,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73de00bfa/4d74bcc450ac497799444c026cc29908 [2019-11-22 10:04:56,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 10:04:56,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 10:04:56,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 10:04:56,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 10:04:56,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 10:04:56,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddc4f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56, skipping insertion in model container [2019-11-22 10:04:56,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 10:04:56,060 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-22 10:04:56,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 10:04:56,270 INFO L201 MainTranslator]: Completed pre-run [2019-11-22 10:04:56,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 10:04:56,310 INFO L205 MainTranslator]: Completed translation [2019-11-22 10:04:56,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56 WrapperNode [2019-11-22 10:04:56,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 10:04:56,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 10:04:56,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 10:04:56,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 10:04:56,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 10:04:56,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 10:04:56,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 10:04:56,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 10:04:56,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (1/1) ... [2019-11-22 10:04:56,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 10:04:56,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 10:04:56,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 10:04:56,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 10:04:56,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (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 10:04:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 10:04:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 10:04:56,706 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 10:04:56,706 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 10:04:56,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:04:56 BoogieIcfgContainer [2019-11-22 10:04:56,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 10:04:56,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 10:04:56,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 10:04:56,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 10:04:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:04:56" (1/3) ... [2019-11-22 10:04:56,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bf2c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:04:56, skipping insertion in model container [2019-11-22 10:04:56,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:04:56" (2/3) ... [2019-11-22 10:04:56,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bf2c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:04:56, skipping insertion in model container [2019-11-22 10:04:56,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:04:56" (3/3) ... [2019-11-22 10:04:56,720 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 10:04:56,733 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 10:04:56,752 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 10:04:56,786 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 10:04:56,816 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 10:04:56,816 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 10:04:56,817 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 10:04:56,817 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 10:04:56,817 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 10:04:56,817 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 10:04:56,818 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 10:04:56,818 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 10:04:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-22 10:04:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-22 10:04:56,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:04:56,844 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-22 10:04:56,844 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 10:04:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:04:56,850 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-22 10:04:56,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 10:04:56,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071261566] [2019-11-22 10:04:56,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 10:04:56,924 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-22 10:04:56,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870662208] [2019-11-22 10:04:56,925 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 10:04:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 10:04:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 10:04:56,983 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-22 10:04:56,984 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 10:04:57,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:04:57,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:04:57 BoogieIcfgContainer [2019-11-22 10:04:57,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 10:04:57,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 10:04:57,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 10:04:57,211 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 10:04:57,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:04:56" (3/4) ... [2019-11-22 10:04:57,217 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-22 10:04:57,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 10:04:57,220 INFO L168 Benchmark]: Toolchain (without parser) took 1196.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -125.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-11-22 10:04:57,222 INFO L168 Benchmark]: CDTParser took 0.61 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 10:04:57,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.54 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-22 10:04:57,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-22 10:04:57,225 INFO L168 Benchmark]: Boogie Preprocessor took 26.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 10:04:57,227 INFO L168 Benchmark]: RCFGBuilder took 278.49 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-22 10:04:57,228 INFO L168 Benchmark]: TraceAbstraction took 500.70 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. [2019-11-22 10:04:57,230 INFO L168 Benchmark]: Witness Printer took 6.54 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 10:04:57,240 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 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 287.54 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 278.49 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 500.70 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 6.54 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 0.1.24-701f399 [2019-11-22 10:04:59,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 10:04:59,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 10:04:59,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 10:04:59,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 10:04:59,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 10:04:59,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 10:04:59,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 10:04:59,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 10:04:59,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 10:04:59,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 10:04:59,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 10:04:59,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 10:04:59,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 10:04:59,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 10:04:59,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 10:04:59,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 10:04:59,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 10:04:59,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 10:04:59,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 10:04:59,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 10:04:59,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 10:04:59,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 10:04:59,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 10:04:59,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 10:04:59,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 10:04:59,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 10:04:59,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 10:04:59,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 10:04:59,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 10:04:59,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 10:04:59,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 10:04:59,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 10:04:59,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 10:04:59,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 10:04:59,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 10:04:59,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 10:04:59,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 10:04:59,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 10:04:59,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 10:04:59,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 10:04:59,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-22 10:04:59,463 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 10:04:59,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 10:04:59,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 10:04:59,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 10:04:59,471 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 10:04:59,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 10:04:59,472 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-22 10:04:59,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-22 10:04:59,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 10:04:59,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 10:04:59,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 10:04:59,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 10:04:59,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 10:04:59,475 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-22 10:04:59,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-22 10:04:59,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-22 10:04:59,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 10:04:59,478 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 10:04:59,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 10:04:59,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 10:04:59,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 10:04:59,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 10:04:59,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 10:04:59,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 10:04:59,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 10:04:59,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 10:04:59,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 10:04:59,482 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-22 10:04:59,482 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-22 10:04:59,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 10:04:59,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 10:04:59,483 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-22 10:04:59,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 10:04:59,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 10:04:59,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 10:04:59,821 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 10:04:59,822 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 10:04:59,823 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 10:04:59,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98faaf51f/83b1fab11c5b41edb84d6f9a47d5721c/FLAGd18768cd0 [2019-11-22 10:05:00,332 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 10:05:00,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 10:05:00,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98faaf51f/83b1fab11c5b41edb84d6f9a47d5721c/FLAGd18768cd0 [2019-11-22 10:05:00,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98faaf51f/83b1fab11c5b41edb84d6f9a47d5721c [2019-11-22 10:05:00,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 10:05:00,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 10:05:00,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 10:05:00,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 10:05:00,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 10:05:00,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:05:00" (1/1) ... [2019-11-22 10:05:00,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5577c5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:00, skipping insertion in model container [2019-11-22 10:05:00,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:05:00" (1/1) ... [2019-11-22 10:05:00,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 10:05:00,723 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-22 10:05:00,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 10:05:00,913 INFO L201 MainTranslator]: Completed pre-run [2019-11-22 10:05:00,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 10:05:01,018 INFO L205 MainTranslator]: Completed translation [2019-11-22 10:05:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01 WrapperNode [2019-11-22 10:05:01,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 10:05:01,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 10:05:01,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 10:05:01,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 10:05:01,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 10:05:01,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 10:05:01,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 10:05:01,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 10:05:01,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (1/1) ... [2019-11-22 10:05:01,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 10:05:01,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 10:05:01,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 10:05:01,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 10:05:01,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (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 10:05:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 10:05:01,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 10:05:10,761 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 10:05:10,761 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 10:05:10,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:10 BoogieIcfgContainer [2019-11-22 10:05:10,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 10:05:10,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 10:05:10,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 10:05:10,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 10:05:10,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:05:00" (1/3) ... [2019-11-22 10:05:10,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7c8be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:05:10, skipping insertion in model container [2019-11-22 10:05:10,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:01" (2/3) ... [2019-11-22 10:05:10,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7c8be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:05:10, skipping insertion in model container [2019-11-22 10:05:10,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:10" (3/3) ... [2019-11-22 10:05:10,772 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 10:05:10,782 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 10:05:10,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 10:05:10,802 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 10:05:10,829 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 10:05:10,830 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 10:05:10,830 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 10:05:10,830 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 10:05:10,831 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 10:05:10,831 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 10:05:10,831 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 10:05:10,831 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 10:05:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-22 10:05:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-22 10:05:10,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:10,854 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-22 10:05:10,855 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 10:05:10,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:10,859 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-22 10:05:10,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 10:05:10,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997523155] [2019-11-22 10:05:10,869 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 10:05:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:11,017 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 10:05:11,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 10:05:11,138 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 10:05:11,139 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 10:05:13,892 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-22 10:05:13,911 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 10:05:13,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997523155] [2019-11-22 10:05:13,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 10:05:13,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-22 10:05:13,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724282249] [2019-11-22 10:05:13,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-22 10:05:13,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 10:05:13,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-22 10:05:13,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-22 10:05:13,940 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-22 10:05:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:05:34,081 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-22 10:05:34,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-22 10:05:34,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-22 10:05:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:05:34,093 INFO L225 Difference]: With dead ends: 67 [2019-11-22 10:05:34,093 INFO L226 Difference]: Without dead ends: 34 [2019-11-22 10:05:34,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-22 10:05:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-22 10:05:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-22 10:05:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-22 10:05:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-22 10:05:34,131 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-22 10:05:34,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:05:34,132 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-22 10:05:34,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-22 10:05:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-22 10:05:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-22 10:05:34,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:34,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:05:34,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-22 10:05:34,348 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 10:05:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:34,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-22 10:05:34,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 10:05:34,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974539832] [2019-11-22 10:05:34,350 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 10:05:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:35,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 10:05:35,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 10:05:36,281 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 10:05:36,282 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 10:05:38,334 WARN L838 $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 false [2019-11-22 10:05:40,373 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 10:05:40,966 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 10:05:41,795 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 10:05:41,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974539832] [2019-11-22 10:05:41,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 10:05:41,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-22 10:05:41,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702923907] [2019-11-22 10:05:41,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-22 10:05:41,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 10:05:41,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-22 10:05:41,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=21, Unknown=3, NotChecked=18, Total=56 [2019-11-22 10:05:41,800 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-22 10:05:46,771 WARN L192 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-22 10:06:00,018 WARN L192 SmtUtils]: Spent 5.56 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-22 10:06:12,721 WARN L192 SmtUtils]: Spent 7.28 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-22 10:06:33,501 WARN L192 SmtUtils]: Spent 16.71 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-22 10:06:47,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:06:47,874 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-22 10:06:47,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-22 10:06:47,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-22 10:06:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:06:47,877 INFO L225 Difference]: With dead ends: 33 [2019-11-22 10:06:47,877 INFO L226 Difference]: Without dead ends: 30 [2019-11-22 10:06:47,879 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=48, Invalid=88, Unknown=4, NotChecked=42, Total=182 [2019-11-22 10:06:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-22 10:06:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-22 10:06:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-22 10:06:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-22 10:06:47,887 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-22 10:06:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:06:47,887 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-22 10:06:47,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-22 10:06:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-22 10:06:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-22 10:06:47,888 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:06:47,889 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:06:48,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-22 10:06:48,095 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 10:06:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:06:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-22 10:06:48,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 10:06:48,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052053941] [2019-11-22 10:06:48,100 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 10:06:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 10:06:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 10:06:51,028 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-22 10:06:51,028 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 10:06:51,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-22 10:06:51,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:06:51 BoogieIcfgContainer [2019-11-22 10:06:51,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 10:06:51,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 10:06:51,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 10:06:51,251 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 10:06:51,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:10" (3/4) ... [2019-11-22 10:06:51,253 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-22 10:06:51,292 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-22 10:06:51,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 10:06:51,295 INFO L168 Benchmark]: Toolchain (without parser) took 110617.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -61.8 MB). Peak memory consumption was 79.3 MB. Max. memory is 11.5 GB. [2019-11-22 10:06:51,296 INFO L168 Benchmark]: CDTParser took 0.30 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 10:06:51,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-22 10:06:51,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.69 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 10:06:51,298 INFO L168 Benchmark]: Boogie Preprocessor took 38.67 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 10:06:51,299 INFO L168 Benchmark]: RCFGBuilder took 9648.30 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-22 10:06:51,300 INFO L168 Benchmark]: TraceAbstraction took 100486.39 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: 94.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 11.5 GB. [2019-11-22 10:06:51,301 INFO L168 Benchmark]: Witness Printer took 42.62 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 10:06:51,304 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 340.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.69 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 38.67 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 9648.30 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 100486.39 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: 94.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.62 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: 100.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 86.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 41 SDslu, 72 SDs, 0 SdLazy, 70 SolverSat, 24 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 36.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 57.5s 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, 2.6s SatisfiabilityAnalysisTime, 9.0s 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...