./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 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/bitvector/modulus-2.i -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 c028dc478ad08c52f1db2e76a15a3094442b18a8 ...................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 20:51:21,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:51:21,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:51:21,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:51:21,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:51:21,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:51:21,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:51:21,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:51:21,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:51:21,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:51:21,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:51:21,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:51:21,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:51:21,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:51:21,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:51:21,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:51:21,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:51:21,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:51:21,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:51:21,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:51:21,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:51:21,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:51:21,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:51:21,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:51:21,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:51:21,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:51:21,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:51:21,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:51:21,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:51:21,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:51:21,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:51:21,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:51:21,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:51:21,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:51:21,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:51:21,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:51:21,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:51:21,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:51:21,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:51:21,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:51:21,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:51:21,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 20:51:21,146 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:51:21,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:51:21,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:51:21,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:51:21,149 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:51:21,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:51:21,150 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:51:21,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:51:21,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:51:21,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:51:21,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 20:51:21,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 20:51:21,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 20:51:21,153 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:51:21,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:51:21,154 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:51:21,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 20:51:21,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:51:21,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:51:21,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 20:51:21,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 20:51:21,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 20:51:21,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:51:21,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 20:51:21,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 20:51:21,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:51:21,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 20:51:21,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 20:51:21,162 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 -> c028dc478ad08c52f1db2e76a15a3094442b18a8 [2019-11-19 20:51:21,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:51:21,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:51:21,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:51:21,479 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:51:21,479 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:51:21,480 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/modulus-2.i [2019-11-19 20:51:21,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2d5f3b5/1eb5c68acada43a8bd567a54ee367189/FLAGca504b205 [2019-11-19 20:51:22,057 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:51:22,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/modulus-2.i [2019-11-19 20:51:22,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2d5f3b5/1eb5c68acada43a8bd567a54ee367189/FLAGca504b205 [2019-11-19 20:51:22,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2d5f3b5/1eb5c68acada43a8bd567a54ee367189 [2019-11-19 20:51:22,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:51:22,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:51:22,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:51:22,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:51:22,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:51:22,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e10ca12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22, skipping insertion in model container [2019-11-19 20:51:22,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,438 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:51:22,464 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:51:22,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:51:22,741 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:51:22,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:51:22,791 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:51:22,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22 WrapperNode [2019-11-19 20:51:22,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:51:22,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:51:22,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:51:22,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:51:22,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:51:22,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:51:22,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:51:22,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:51:22,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (1/1) ... [2019-11-19 20:51:22,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:51:22,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:51:22,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:51:22,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:51:22,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (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 [2019-11-19 20:51:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:51:23,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:51:23,190 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:51:23,191 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-19 20:51:23,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:51:23 BoogieIcfgContainer [2019-11-19 20:51:23,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:51:23,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 20:51:23,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 20:51:23,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 20:51:23,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:51:22" (1/3) ... [2019-11-19 20:51:23,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0371e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:51:23, skipping insertion in model container [2019-11-19 20:51:23,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:51:22" (2/3) ... [2019-11-19 20:51:23,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0371e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:51:23, skipping insertion in model container [2019-11-19 20:51:23,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:51:23" (3/3) ... [2019-11-19 20:51:23,201 INFO L109 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2019-11-19 20:51:23,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 20:51:23,218 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 20:51:23,230 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 20:51:23,259 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 20:51:23,260 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 20:51:23,260 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 20:51:23,260 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:51:23,260 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:51:23,260 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 20:51:23,260 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:51:23,261 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 20:51:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-19 20:51:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 20:51:23,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:51:23,279 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:51:23,280 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:51:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:51:23,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1538988787, now seen corresponding path program 1 times [2019-11-19 20:51:23,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:51:23,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328528362] [2019-11-19 20:51:23,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:51:23,398 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-19 20:51:23,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507327007] [2019-11-19 20:51:23,400 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 [2019-11-19 20:51:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-11-19 20:51:26,823 WARN L168 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2019-11-19 20:51:26,824 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 20:51:27,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 20:51:27,046 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-11-19 20:51:27,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:51:27 BoogieIcfgContainer [2019-11-19 20:51:27,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 20:51:27,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:51:27,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:51:27,049 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:51:27,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:51:23" (3/4) ... [2019-11-19 20:51:27,055 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 20:51:27,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:51:27,060 INFO L168 Benchmark]: Toolchain (without parser) took 4638.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 20:51:27,060 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 20:51:27,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.46 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. [2019-11-19 20:51:27,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:51:27,067 INFO L168 Benchmark]: Boogie Preprocessor took 42.02 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. [2019-11-19 20:51:27,068 INFO L168 Benchmark]: RCFGBuilder took 253.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:51:27,070 INFO L168 Benchmark]: TraceAbstraction took 3854.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:51:27,070 INFO L168 Benchmark]: Witness Printer took 7.98 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. [2019-11-19 20:51:27,088 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.46 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 102.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.02 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 253.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3854.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Witness Printer took 7.98 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: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of shiftLeft at line 29. Possible FailurePath: [L24] unsigned int n = __VERIFIER_nondet_uint(); [L25] unsigned int s = __VERIFIER_nondet_uint(); [L26] unsigned int d; [L27] unsigned int m; [L29] d = (1 << s) - 1 [L30] COND TRUE d > 0 [L31] m = n [L32] COND FALSE !(n > d) [L40] COND TRUE m == d [L41] m = 0 [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNKNOWN, OverallTime: 3.7s, 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=14occurred 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, 3.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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...