./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 65a59966 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 0.1.24-65a5996 [2019-11-20 19:17:00,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 19:17:00,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 19:17:00,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 19:17:00,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 19:17:00,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 19:17:00,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 19:17:00,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 19:17:00,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 19:17:00,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 19:17:00,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 19:17:00,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 19:17:00,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 19:17:00,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 19:17:00,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 19:17:00,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 19:17:00,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 19:17:00,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 19:17:00,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 19:17:00,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 19:17:00,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 19:17:00,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 19:17:00,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 19:17:00,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 19:17:00,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 19:17:00,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 19:17:00,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 19:17:00,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 19:17:00,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 19:17:00,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 19:17:00,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 19:17:00,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 19:17:00,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 19:17:00,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 19:17:00,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 19:17:00,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 19:17:00,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 19:17:00,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 19:17:00,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 19:17:00,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 19:17:00,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 19:17:00,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 19:17:00,172 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 19:17:00,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 19:17:00,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 19:17:00,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 19:17:00,175 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 19:17:00,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 19:17:00,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 19:17:00,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 19:17:00,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 19:17:00,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 19:17:00,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 19:17:00,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 19:17:00,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 19:17:00,177 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 19:17:00,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 19:17:00,178 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 19:17:00,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 19:17:00,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 19:17:00,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 19:17:00,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 19:17:00,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 19:17:00,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:17:00,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 19:17:00,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 19:17:00,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 19:17:00,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 19:17:00,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 19:17:00,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 19:17:00,181 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 [2019-11-20 19:17:00,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 19:17:00,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 19:17:00,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 19:17:00,509 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 19:17:00,509 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 19:17:00,510 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:17:00,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9caecc9/195ec70505064d6b9354577b1ef274e5/FLAGf6f5ad23a [2019-11-20 19:17:01,073 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 19:17:01,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:17:01,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9caecc9/195ec70505064d6b9354577b1ef274e5/FLAGf6f5ad23a [2019-11-20 19:17:01,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9caecc9/195ec70505064d6b9354577b1ef274e5 [2019-11-20 19:17:01,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 19:17:01,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 19:17:01,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 19:17:01,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 19:17:01,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 19:17:01,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a12655d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01, skipping insertion in model container [2019-11-20 19:17:01,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,525 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 19:17:01,548 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 19:17:01,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:17:01,747 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 19:17:01,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:17:01,849 INFO L192 MainTranslator]: Completed translation [2019-11-20 19:17:01,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01 WrapperNode [2019-11-20 19:17:01,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 19:17:01,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 19:17:01,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 19:17:01,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 19:17:01,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 19:17:01,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 19:17:01,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 19:17:01,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 19:17:01,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2019-11-20 19:17:01,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 19:17:01,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 19:17:01,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 19:17:01,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 19:17:01,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (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 [2019-11-20 19:17:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 19:17:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 19:17:02,217 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 19:17:02,221 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 19:17:02,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:02 BoogieIcfgContainer [2019-11-20 19:17:02,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 19:17:02,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 19:17:02,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 19:17:02,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 19:17:02,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:17:01" (1/3) ... [2019-11-20 19:17:02,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8165dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:02, skipping insertion in model container [2019-11-20 19:17:02,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (2/3) ... [2019-11-20 19:17:02,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8165dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:02, skipping insertion in model container [2019-11-20 19:17:02,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:02" (3/3) ... [2019-11-20 19:17:02,245 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-20 19:17:02,261 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 19:17:02,269 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 19:17:02,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 19:17:02,314 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 19:17:02,315 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 19:17:02,315 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 19:17:02,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 19:17:02,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 19:17:02,316 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 19:17:02,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 19:17:02,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 19:17:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 19:17:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 19:17:02,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:17:02,338 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 19:17:02,338 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]=== [2019-11-20 19:17:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:17:02,344 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 19:17:02,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 19:17:02,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635207865] [2019-11-20 19:17:02,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 19:17:02,420 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 19:17:02,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755300949] [2019-11-20 19:17:02,421 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 [2019-11-20 19:17:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:17:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:17:02,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 19:17:02,478 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 19:17:02,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 19:17:02,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:17:02 BoogieIcfgContainer [2019-11-20 19:17:02,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 19:17:02,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 19:17:02,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 19:17:02,700 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 19:17:02,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:02" (3/4) ... [2019-11-20 19:17:02,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 19:17:02,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 19:17:02,709 INFO L168 Benchmark]: Toolchain (without parser) took 1200.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -144.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-11-20 19:17:02,709 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 19:17:02,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-20 19:17:02,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.79 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. [2019-11-20 19:17:02,714 INFO L168 Benchmark]: Boogie Preprocessor took 36.96 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. [2019-11-20 19:17:02,715 INFO L168 Benchmark]: RCFGBuilder took 303.75 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-11-20 19:17:02,716 INFO L168 Benchmark]: TraceAbstraction took 474.20 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. [2019-11-20 19:17:02,717 INFO L168 Benchmark]: Witness Printer took 4.84 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. [2019-11-20 19:17:02,723 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.96 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 303.75 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 474.20 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 4.84 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 0.1.24-65a5996 [2019-11-20 19:17:04,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 19:17:04,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 19:17:04,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 19:17:04,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 19:17:04,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 19:17:04,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 19:17:04,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 19:17:04,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 19:17:04,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 19:17:04,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 19:17:04,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 19:17:04,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 19:17:04,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 19:17:04,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 19:17:04,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 19:17:04,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 19:17:04,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 19:17:04,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 19:17:04,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 19:17:04,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 19:17:04,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 19:17:04,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 19:17:04,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 19:17:04,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 19:17:04,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 19:17:04,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 19:17:04,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 19:17:04,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 19:17:04,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 19:17:04,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 19:17:04,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 19:17:04,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 19:17:04,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 19:17:04,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 19:17:04,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 19:17:04,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 19:17:04,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 19:17:04,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 19:17:04,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 19:17:04,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 19:17:04,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 19:17:04,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 19:17:04,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 19:17:04,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 19:17:04,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 19:17:04,756 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 19:17:04,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 19:17:04,757 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 19:17:04,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 19:17:04,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 19:17:04,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 19:17:04,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 19:17:04,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 19:17:04,759 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 19:17:04,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 19:17:04,759 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 19:17:04,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 19:17:04,760 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 19:17:04,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 19:17:04,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 19:17:04,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 19:17:04,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 19:17:04,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 19:17:04,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:17:04,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 19:17:04,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 19:17:04,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 19:17:04,763 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 19:17:04,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 19:17:04,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 19:17:04,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 19:17:04,764 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 [2019-11-20 19:17:05,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 19:17:05,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 19:17:05,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 19:17:05,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 19:17:05,107 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 19:17:05,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:17:05,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6de6072/0cef7debedb04048a9f7ee2d8e86efdf/FLAG6ea430a37 [2019-11-20 19:17:05,640 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 19:17:05,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:17:05,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6de6072/0cef7debedb04048a9f7ee2d8e86efdf/FLAG6ea430a37 [2019-11-20 19:17:06,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6de6072/0cef7debedb04048a9f7ee2d8e86efdf [2019-11-20 19:17:06,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 19:17:06,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 19:17:06,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 19:17:06,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 19:17:06,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 19:17:06,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcd4941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06, skipping insertion in model container [2019-11-20 19:17:06,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,030 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 19:17:06,049 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 19:17:06,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:17:06,232 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 19:17:06,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:17:06,282 INFO L192 MainTranslator]: Completed translation [2019-11-20 19:17:06,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06 WrapperNode [2019-11-20 19:17:06,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 19:17:06,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 19:17:06,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 19:17:06,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 19:17:06,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 19:17:06,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 19:17:06,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 19:17:06,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 19:17:06,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... [2019-11-20 19:17:06,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 19:17:06,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 19:17:06,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 19:17:06,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 19:17:06,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:17:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 19:17:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 19:17:17,202 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 19:17:17,202 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 19:17:17,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:17 BoogieIcfgContainer [2019-11-20 19:17:17,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 19:17:17,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 19:17:17,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 19:17:17,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 19:17:17,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:17:06" (1/3) ... [2019-11-20 19:17:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444a3d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:17, skipping insertion in model container [2019-11-20 19:17:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:06" (2/3) ... [2019-11-20 19:17:17,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444a3d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:17, skipping insertion in model container [2019-11-20 19:17:17,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:17" (3/3) ... [2019-11-20 19:17:17,211 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-20 19:17:17,221 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 19:17:17,229 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 19:17:17,240 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 19:17:17,268 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 19:17:17,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 19:17:17,268 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 19:17:17,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 19:17:17,269 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 19:17:17,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 19:17:17,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 19:17:17,270 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 19:17:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 19:17:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 19:17:17,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:17:17,292 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 19:17:17,293 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]=== [2019-11-20 19:17:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:17:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 19:17:17,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 19:17:17,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199474736] [2019-11-20 19:17:17,308 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 [2019-11-20 19:17:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 19:17:17,451 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 19:17:17,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 19:17:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:17:17,548 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 19:17:20,191 WARN L192 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-20 19:17:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:17:20,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199474736] [2019-11-20 19:17:20,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 19:17:20,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 19:17:20,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850414358] [2019-11-20 19:17:20,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 19:17:20,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 19:17:20,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 19:17:20,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 19:17:20,213 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-20 19:17:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 19:17:40,555 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-20 19:17:40,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 19:17:40,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-20 19:17:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 19:17:40,567 INFO L225 Difference]: With dead ends: 66 [2019-11-20 19:17:40,567 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 19:17:40,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-20 19:17:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 19:17:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-20 19:17:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 19:17:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-20 19:17:40,609 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-20 19:17:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 19:17:40,609 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-20 19:17:40,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 19:17:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-20 19:17:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 19:17:40,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:17:40,611 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 19:17:40,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 19:17:40,825 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]=== [2019-11-20 19:17:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:17:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-20 19:17:40,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 19:17:40,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612104786] [2019-11-20 19:17:40,828 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 [2019-11-20 19:17:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 19:17:41,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 19:17:41,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 19:17:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:17:42,826 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 19:17:57,948 WARN L192 SmtUtils]: Spent 3.96 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-20 19:17:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:17:57,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612104786] [2019-11-20 19:17:57,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 19:17:57,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-20 19:17:57,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264236338] [2019-11-20 19:17:57,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 19:17:57,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 19:17:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 19:17:57,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2019-11-20 19:17:57,955 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-20 19:18:00,426 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)))) (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul roundNearestTiesToEven .cse0 c_ULTIMATE.start_main_~a~0))))))) is different from true [2019-11-20 19:18:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 19:18:49,788 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-20 19:18:49,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 19:18:49,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-20 19:18:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 19:18:49,790 INFO L225 Difference]: With dead ends: 31 [2019-11-20 19:18:49,790 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 19:18:49,791 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=15, Invalid=29, Unknown=2, NotChecked=10, Total=56 [2019-11-20 19:18:49,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 19:18:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-20 19:18:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 19:18:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-20 19:18:49,800 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-20 19:18:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 19:18:49,800 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-20 19:18:49,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 19:18:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-20 19:18:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 19:18:49,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:18:49,802 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 19:18:50,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 19:18:50,004 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]=== [2019-11-20 19:18:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:18:50,005 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-20 19:18:50,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 19:18:50,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430585689] [2019-11-20 19:18:50,007 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 [2019-11-20 19:18:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:18:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:18:53,059 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 19:18:53,060 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 19:18:53,260 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 19:18:53,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:18:53 BoogieIcfgContainer [2019-11-20 19:18:53,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 19:18:53,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 19:18:53,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 19:18:53,289 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 19:18:53,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:17" (3/4) ... [2019-11-20 19:18:53,293 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 19:18:53,335 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-20 19:18:53,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 19:18:53,337 INFO L168 Benchmark]: Toolchain (without parser) took 107325.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -59.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 11.5 GB. [2019-11-20 19:18:53,338 INFO L168 Benchmark]: CDTParser took 0.31 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. [2019-11-20 19:18:53,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.68 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 19:18:53,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-20 19:18:53,341 INFO L168 Benchmark]: Boogie Preprocessor took 30.77 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 19:18:53,342 INFO L168 Benchmark]: RCFGBuilder took 10781.21 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-11-20 19:18:53,343 INFO L168 Benchmark]: TraceAbstraction took 96083.39 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: 77.3 MB). Peak memory consumption was 77.3 MB. Max. memory is 11.5 GB. [2019-11-20 19:18:53,343 INFO L168 Benchmark]: Witness Printer took 47.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 19:18:53,347 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 269.68 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 107.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.77 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 10781.21 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 96083.39 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: 77.3 MB). Peak memory consumption was 77.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 96.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 72.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 34 SDslu, 71 SDs, 0 SdLazy, 77 SolverSat, 19 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 65.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.3s 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, 2.3s SatisfiabilityAnalysisTime, 18.9s 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...