./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 264dba86 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 0.1.24-264dba8 [2019-11-21 14:33:51,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 14:33:51,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 14:33:51,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 14:33:51,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 14:33:51,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 14:33:51,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 14:33:51,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 14:33:51,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 14:33:51,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 14:33:51,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 14:33:51,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 14:33:51,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 14:33:51,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 14:33:51,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 14:33:51,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 14:33:51,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 14:33:51,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 14:33:51,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 14:33:51,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 14:33:51,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 14:33:51,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 14:33:51,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 14:33:51,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 14:33:51,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 14:33:51,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 14:33:51,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 14:33:51,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 14:33:51,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 14:33:51,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 14:33:51,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 14:33:51,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 14:33:51,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 14:33:51,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 14:33:51,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 14:33:51,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 14:33:51,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 14:33:51,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 14:33:51,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 14:33:51,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 14:33:51,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 14:33:51,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-21 14:33:51,865 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 14:33:51,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 14:33:51,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 14:33:51,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 14:33:51,867 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 14:33:51,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 14:33:51,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 14:33:51,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 14:33:51,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 14:33:51,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 14:33:51,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 14:33:51,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 14:33:51,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 14:33:51,870 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 14:33:51,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 14:33:51,870 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 14:33:51,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 14:33:51,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 14:33:51,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 14:33:51,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 14:33:51,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 14:33:51,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 14:33:51,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 14:33:51,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 14:33:51,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 14:33:51,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-21 14:33:51,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-21 14:33:51,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 14:33:51,874 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 [2019-11-21 14:33:52,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 14:33:52,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 14:33:52,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 14:33:52,233 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 14:33:52,234 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 14:33:52,234 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 14:33:52,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c694583b/e6d1fedb73dc40bea6206cf5bc5014bc/FLAG166769987 [2019-11-21 14:33:52,724 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 14:33:52,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 14:33:52,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c694583b/e6d1fedb73dc40bea6206cf5bc5014bc/FLAG166769987 [2019-11-21 14:33:53,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c694583b/e6d1fedb73dc40bea6206cf5bc5014bc [2019-11-21 14:33:53,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 14:33:53,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 14:33:53,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 14:33:53,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 14:33:53,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 14:33:53,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307b14bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53, skipping insertion in model container [2019-11-21 14:33:53,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 14:33:53,170 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 14:33:53,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:33:53,354 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 14:33:53,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:33:53,448 INFO L205 MainTranslator]: Completed translation [2019-11-21 14:33:53,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53 WrapperNode [2019-11-21 14:33:53,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 14:33:53,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 14:33:53,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 14:33:53,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 14:33:53,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 14:33:53,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 14:33:53,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 14:33:53,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 14:33:53,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (1/1) ... [2019-11-21 14:33:53,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 14:33:53,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 14:33:53,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 14:33:53,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 14:33:53,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (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 14:33:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 14:33:53,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 14:33:53,851 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 14:33:53,852 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-21 14:33:53,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:33:53 BoogieIcfgContainer [2019-11-21 14:33:53,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 14:33:53,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 14:33:53,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 14:33:53,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 14:33:53,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:33:53" (1/3) ... [2019-11-21 14:33:53,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da4ddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:33:53, skipping insertion in model container [2019-11-21 14:33:53,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:53" (2/3) ... [2019-11-21 14:33:53,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da4ddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:33:53, skipping insertion in model container [2019-11-21 14:33:53,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:33:53" (3/3) ... [2019-11-21 14:33:53,861 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-21 14:33:53,871 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 14:33:53,879 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-21 14:33:53,897 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-21 14:33:53,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 14:33:53,930 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 14:33:53,930 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 14:33:53,930 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 14:33:53,931 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 14:33:53,931 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 14:33:53,931 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 14:33:53,932 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 14:33:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-21 14:33:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 14:33:53,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:33:53,959 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 14:33:53,960 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 14:33:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:33:53,966 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 14:33:53,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:33:53,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780317696] [2019-11-21 14:33:53,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:33:54,054 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:33:54,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798151276] [2019-11-21 14:33:54,055 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 14:33:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 14:33:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 14:33:54,135 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-21 14:33:54,136 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 14:33:54,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:33:54,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 02:33:54 BoogieIcfgContainer [2019-11-21 14:33:54,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 14:33:54,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 14:33:54,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 14:33:54,373 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 14:33:54,374 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:33:53" (3/4) ... [2019-11-21 14:33:54,380 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 14:33:54,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 14:33:54,383 INFO L168 Benchmark]: Toolchain (without parser) took 1246.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -132.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-11-21 14:33:54,384 INFO L168 Benchmark]: CDTParser took 0.63 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 14:33:54,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-21 14:33:54,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:33:54,386 INFO L168 Benchmark]: Boogie Preprocessor took 27.91 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 14:33:54,387 INFO L168 Benchmark]: RCFGBuilder took 334.31 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-21 14:33:54,388 INFO L168 Benchmark]: TraceAbstraction took 517.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-21 14:33:54,389 INFO L168 Benchmark]: Witness Printer took 7.64 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 14:33:54,394 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 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 313.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.91 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. * RCFGBuilder took 334.31 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 517.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Witness Printer took 7.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 14:33:56,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 14:33:56,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 14:33:56,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 14:33:56,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 14:33:56,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 14:33:56,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 14:33:56,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 14:33:56,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 14:33:56,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 14:33:56,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 14:33:56,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 14:33:56,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 14:33:56,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 14:33:56,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 14:33:56,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 14:33:56,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 14:33:56,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 14:33:56,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 14:33:56,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 14:33:56,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 14:33:56,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 14:33:56,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 14:33:56,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 14:33:56,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 14:33:56,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 14:33:56,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 14:33:56,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 14:33:56,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 14:33:56,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 14:33:56,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 14:33:56,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 14:33:56,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 14:33:56,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 14:33:56,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 14:33:56,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 14:33:56,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 14:33:56,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 14:33:56,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 14:33:56,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 14:33:56,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 14:33:56,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-21 14:33:56,586 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 14:33:56,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 14:33:56,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 14:33:56,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 14:33:56,590 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 14:33:56,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 14:33:56,590 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 14:33:56,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 14:33:56,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 14:33:56,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 14:33:56,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 14:33:56,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 14:33:56,593 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 14:33:56,593 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 14:33:56,593 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 14:33:56,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 14:33:56,594 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 14:33:56,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 14:33:56,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 14:33:56,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 14:33:56,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 14:33:56,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 14:33:56,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 14:33:56,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 14:33:56,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 14:33:56,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 14:33:56,597 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 14:33:56,597 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 14:33:56,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 14:33:56,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 14:33:56,598 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 [2019-11-21 14:33:56,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 14:33:56,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 14:33:56,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 14:33:56,973 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 14:33:56,973 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 14:33:56,975 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 14:33:57,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef5ee966/791655f324ff455391f1940f587bd277/FLAGd7370ea63 [2019-11-21 14:33:57,451 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 14:33:57,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 14:33:57,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef5ee966/791655f324ff455391f1940f587bd277/FLAGd7370ea63 [2019-11-21 14:33:57,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef5ee966/791655f324ff455391f1940f587bd277 [2019-11-21 14:33:57,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 14:33:57,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 14:33:57,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 14:33:57,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 14:33:57,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 14:33:57,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:33:57" (1/1) ... [2019-11-21 14:33:57,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d85277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:57, skipping insertion in model container [2019-11-21 14:33:57,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:33:57" (1/1) ... [2019-11-21 14:33:57,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 14:33:57,872 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 14:33:58,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:33:58,161 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 14:33:58,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:33:58,295 INFO L205 MainTranslator]: Completed translation [2019-11-21 14:33:58,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58 WrapperNode [2019-11-21 14:33:58,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 14:33:58,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 14:33:58,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 14:33:58,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 14:33:58,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 14:33:58,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 14:33:58,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 14:33:58,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 14:33:58,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (1/1) ... [2019-11-21 14:33:58,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 14:33:58,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 14:33:58,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 14:33:58,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 14:33:58,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (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 14:33:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 14:33:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 14:34:08,538 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 14:34:08,538 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-21 14:34:08,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:34:08 BoogieIcfgContainer [2019-11-21 14:34:08,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 14:34:08,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 14:34:08,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 14:34:08,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 14:34:08,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:33:57" (1/3) ... [2019-11-21 14:34:08,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72261283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:34:08, skipping insertion in model container [2019-11-21 14:34:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:33:58" (2/3) ... [2019-11-21 14:34:08,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72261283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:34:08, skipping insertion in model container [2019-11-21 14:34:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:34:08" (3/3) ... [2019-11-21 14:34:08,548 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-21 14:34:08,556 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 14:34:08,561 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-21 14:34:08,570 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-21 14:34:08,594 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 14:34:08,595 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 14:34:08,595 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 14:34:08,595 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 14:34:08,595 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 14:34:08,596 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 14:34:08,596 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 14:34:08,596 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 14:34:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-21 14:34:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 14:34:08,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:34:08,616 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 14:34:08,617 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 14:34:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:34:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 14:34:08,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:34:08,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116445338] [2019-11-21 14:34:08,632 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 14:34:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:34:08,765 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 14:34:08,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:34:08,868 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 14:34:08,868 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:34:11,304 WARN L192 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-21 14:34:11,305 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 14:34:11,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116445338] [2019-11-21 14:34:11,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:34:11,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-21 14:34:11,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787701920] [2019-11-21 14:34:11,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:34:11,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:34:11,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:34:11,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 14:34:11,331 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-21 14:34:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:34:30,899 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-21 14:34:30,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 14:34:30,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-21 14:34:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:34:30,909 INFO L225 Difference]: With dead ends: 66 [2019-11-21 14:34:30,909 INFO L226 Difference]: Without dead ends: 33 [2019-11-21 14:34:30,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-21 14:34:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-21 14:34:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-21 14:34:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-21 14:34:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-21 14:34:30,946 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-21 14:34:30,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:34:30,947 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-21 14:34:30,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:34:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-21 14:34:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-21 14:34:30,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:34:30,948 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-21 14:34:31,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-21 14:34:31,157 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 14:34:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:34:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-21 14:34:31,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:34:31,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719299666] [2019-11-21 14:34:31,160 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 14:34:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:34:31,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 14:34:31,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:34:32,964 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 14:34:32,965 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:34:49,167 WARN L192 SmtUtils]: Spent 3.86 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-21 14:34:49,170 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 14:34:49,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719299666] [2019-11-21 14:34:49,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:34:49,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-21 14:34:49,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469658933] [2019-11-21 14:34:49,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:34:49,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:34:49,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:34:49,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2019-11-21 14:34:49,174 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-21 14:34:56,433 WARN L192 SmtUtils]: Spent 3.39 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-21 14:35:06,053 WARN L192 SmtUtils]: Spent 5.56 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-21 14:35:08,898 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) (= (_ 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) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)))) (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul roundNearestTiesToEven .cse1 c_ULTIMATE.start_main_~a~0)))))) (not .cse0))) is different from true [2019-11-21 14:35:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:35:57,519 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-21 14:35:57,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 14:35:57,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-21 14:35:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:35:57,521 INFO L225 Difference]: With dead ends: 31 [2019-11-21 14:35:57,521 INFO L226 Difference]: Without dead ends: 28 [2019-11-21 14:35:57,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=25, Invalid=48, Unknown=3, NotChecked=14, Total=90 [2019-11-21 14:35:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-21 14:35:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-21 14:35:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-21 14:35:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-21 14:35:57,532 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-21 14:35:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:35:57,532 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-21 14:35:57,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:35:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-21 14:35:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-21 14:35:57,534 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:35:57,534 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:35:57,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-21 14:35:57,748 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 14:35:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:35:57,750 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-21 14:35:57,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:35:57,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430953651] [2019-11-21 14:35:57,751 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 14:35:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 14:36:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 14:36:00,734 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 14:36:00,735 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 14:36:00,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-21 14:36:00,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 02:36:00 BoogieIcfgContainer [2019-11-21 14:36:00,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 14:36:00,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 14:36:00,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 14:36:00,958 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 14:36:00,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:34:08" (3/4) ... [2019-11-21 14:36:00,961 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-21 14:36:01,006 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 14:36:01,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 14:36:01,008 INFO L168 Benchmark]: Toolchain (without parser) took 123184.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.4 MB in the beginning and 996.4 MB in the end (delta: -36.0 MB). Peak memory consumption was 83.0 MB. Max. memory is 11.5 GB. [2019-11-21 14:36:01,009 INFO L168 Benchmark]: CDTParser took 0.38 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 14:36:01,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -148.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-21 14:36:01,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:36:01,013 INFO L168 Benchmark]: Boogie Preprocessor took 30.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:36:01,014 INFO L168 Benchmark]: RCFGBuilder took 10153.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-11-21 14:36:01,015 INFO L168 Benchmark]: TraceAbstraction took 112415.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-11-21 14:36:01,020 INFO L168 Benchmark]: Witness Printer took 49.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-21 14:36:01,026 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 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 467.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -148.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 10153.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 112415.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. * Witness Printer took 49.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. 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, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 112.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 87.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 35 SDslu, 71 SDs, 0 SdLazy, 76 SolverSat, 21 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 67.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.8s Time, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 819 SizeOfPredicates, 9 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 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...