./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/n.c40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/loops/n.c40.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed3f8420ae2f88e8ad9c7f42b645f73b3c08f37e ............................................................................................................................................................................................................................................................................................................................................................... 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 -Xmx15G -Xms4m -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/loops/n.c40.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed3f8420ae2f88e8ad9c7f42b645f73b3c08f37e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:55:03,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:55:03,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:55:03,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:55:03,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:55:03,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:55:03,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:55:03,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:55:03,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:55:03,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:55:03,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:55:03,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:55:03,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:55:03,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:55:03,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:55:03,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:55:03,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:55:03,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:55:03,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:55:03,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:55:03,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:55:03,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:55:03,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:55:03,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:55:03,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:55:03,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:55:03,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:55:03,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:55:03,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:55:03,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:55:03,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:55:03,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:55:03,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:55:03,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:55:03,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:55:03,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:55:03,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:55:03,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:55:03,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:55:03,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:55:03,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:55:03,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:55:03,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:55:03,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:55:03,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:55:03,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:55:03,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:55:03,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:55:03,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:55:03,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:55:03,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:55:03,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:55:03,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:55:03,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:55:03,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:55:03,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:55:03,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:55:03,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:55:03,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:55:03,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:55:03,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:55:03,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:55:03,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:55:03,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:55:03,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:55:03,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:55:03,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:55:03,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:55:03,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:55:03,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:55:03,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:55:03,348 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(reach_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 -> ed3f8420ae2f88e8ad9c7f42b645f73b3c08f37e [2020-10-20 00:55:03,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:55:03,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:55:03,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:55:03,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:55:03,600 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:55:03,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c40.c [2020-10-20 00:55:03,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89537bf8d/872c2b783df94bdfa4cf54d3f26bd427/FLAG8ce6a05e6 [2020-10-20 00:55:04,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:55:04,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c40.c [2020-10-20 00:55:04,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89537bf8d/872c2b783df94bdfa4cf54d3f26bd427/FLAG8ce6a05e6 [2020-10-20 00:55:04,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89537bf8d/872c2b783df94bdfa4cf54d3f26bd427 [2020-10-20 00:55:04,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:55:04,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:55:04,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:04,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:55:04,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:55:04,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aba94ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04, skipping insertion in model container [2020-10-20 00:55:04,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:55:04,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:55:04,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:04,850 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:55:04,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:04,887 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:55:04,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04 WrapperNode [2020-10-20 00:55:04,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:04,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:04,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:55:04,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:55:04,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:04,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:55:04,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:55:04,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:55:04,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (1/1) ... [2020-10-20 00:55:04,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:55:04,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:55:04,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:55:04,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:55:04,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (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 [2020-10-20 00:55:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:55:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:55:05,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:55:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:55:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:55:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:55:05,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:55:05,264 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 00:55:05,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:05 BoogieIcfgContainer [2020-10-20 00:55:05,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:55:05,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:55:05,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:55:05,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:55:05,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:55:04" (1/3) ... [2020-10-20 00:55:05,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176f07ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:05, skipping insertion in model container [2020-10-20 00:55:05,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:04" (2/3) ... [2020-10-20 00:55:05,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176f07ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:05, skipping insertion in model container [2020-10-20 00:55:05,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:05" (3/3) ... [2020-10-20 00:55:05,275 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c40.c [2020-10-20 00:55:05,287 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:55:05,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:55:05,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:55:05,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:55:05,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:55:05,351 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:55:05,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:55:05,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:55:05,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:55:05,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:55:05,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:55:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:55:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:55:05,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:05,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:05,400 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:05,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493552, now seen corresponding path program 1 times [2020-10-20 00:55:05,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:05,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453039902] [2020-10-20 00:55:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:05,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453039902] [2020-10-20 00:55:05,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:05,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:55:05,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188607780] [2020-10-20 00:55:05,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:55:05,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:55:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:55:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:55:05,599 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:55:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:05,613 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-10-20 00:55:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:55:05,615 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:55:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:05,625 INFO L225 Difference]: With dead ends: 23 [2020-10-20 00:55:05,626 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:55:05,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:55:05,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:55:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:55:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:55:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:55:05,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-20 00:55:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:05,675 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:55:05,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:55:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:55:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:55:05,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:05,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:05,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:55:05,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:05,678 INFO L82 PathProgramCache]: Analyzing trace with hash 177687787, now seen corresponding path program 1 times [2020-10-20 00:55:05,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:05,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445924854] [2020-10-20 00:55:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:05,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445924854] [2020-10-20 00:55:05,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:05,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:55:05,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177074458] [2020-10-20 00:55:05,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:55:05,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:55:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:55:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:55:05,791 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-10-20 00:55:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:05,819 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 00:55:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:55:05,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 00:55:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:05,820 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:55:05,820 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:55:05,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:55:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:55:05,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:55:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:55:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 00:55:05,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-20 00:55:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:05,827 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 00:55:05,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:55:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 00:55:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:55:05,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:05,828 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:05,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:55:05,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:05,829 INFO L82 PathProgramCache]: Analyzing trace with hash 468121936, now seen corresponding path program 1 times [2020-10-20 00:55:05,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:05,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523498445] [2020-10-20 00:55:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:05,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523498445] [2020-10-20 00:55:05,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:05,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:55:05,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419495516] [2020-10-20 00:55:05,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:55:05,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:55:05,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:55:05,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:55:05,915 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-10-20 00:55:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:05,932 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-20 00:55:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:55:05,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 00:55:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:05,933 INFO L225 Difference]: With dead ends: 11 [2020-10-20 00:55:05,933 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:55:05,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:55:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:55:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:55:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:55:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:55:05,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-20 00:55:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:05,935 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:55:05,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:55:05,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:55:05,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:55:05,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:55:05,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:55:05,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:55:05,967 INFO L274 CegarLoopResult]: For program point L21(lines 21 22) no Hoare annotation was computed. [2020-10-20 00:55:05,967 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:55:05,967 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:55:05,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:55:05,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:55:05,968 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:55:05,968 INFO L277 CegarLoopResult]: At program point L24(lines 10 25) the Hoare annotation is: true [2020-10-20 00:55:05,969 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-20 00:55:05,969 INFO L274 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-10-20 00:55:05,969 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 22) no Hoare annotation was computed. [2020-10-20 00:55:05,969 INFO L274 CegarLoopResult]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2020-10-20 00:55:05,969 INFO L270 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-10-20 00:55:05,970 INFO L274 CegarLoopResult]: For program point L14-4(lines 14 17) no Hoare annotation was computed. [2020-10-20 00:55:05,979 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 00:55:05,985 INFO L168 Benchmark]: Toolchain (without parser) took 1386.21 ms. Allocated memory was 39.8 MB in the beginning and 44.0 MB in the end (delta: 4.2 MB). Free memory was 17.9 MB in the beginning and 25.2 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:55:05,986 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 30.9 MB. Free memory was 6.1 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:55:05,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.32 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 17.0 MB in the beginning and 16.9 MB in the end (delta: 49.0 kB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:05,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 40.9 MB. Free memory was 16.9 MB in the beginning and 15.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:05,989 INFO L168 Benchmark]: Boogie Preprocessor took 25.93 ms. Allocated memory is still 40.9 MB. Free memory was 15.3 MB in the beginning and 13.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:05,990 INFO L168 Benchmark]: RCFGBuilder took 312.72 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.8 MB in the beginning and 14.8 MB in the end (delta: -999.9 kB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:05,991 INFO L168 Benchmark]: TraceAbstraction took 714.29 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 14.4 MB in the beginning and 25.2 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:55:05,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 30.9 MB. Free memory was 6.1 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 284.32 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 17.0 MB in the beginning and 16.9 MB in the end (delta: 49.0 kB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 40.9 MB. Free memory was 16.9 MB in the beginning and 15.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.93 ms. Allocated memory is still 40.9 MB. Free memory was 15.3 MB in the beginning and 13.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 312.72 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.8 MB in the beginning and 14.8 MB in the end (delta: -999.9 kB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 714.29 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 14.4 MB in the beginning and 25.2 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:55:08,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:55:08,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:55:08,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:55:08,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:55:08,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:55:08,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:55:08,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:55:08,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:55:08,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:55:08,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:55:08,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:55:08,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:55:08,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:55:08,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:55:08,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:55:08,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:55:08,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:55:08,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:55:08,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:55:08,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:55:08,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:55:08,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:55:08,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:55:08,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:55:08,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:55:08,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:55:08,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:55:08,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:55:08,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:55:08,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:55:08,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:55:08,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:55:08,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:55:08,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:55:08,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:55:08,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:55:08,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:55:08,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:55:08,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:55:08,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:55:08,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:55:08,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:55:08,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:55:08,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:55:08,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:55:08,318 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:55:08,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:55:08,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:55:08,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:55:08,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:55:08,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:55:08,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:55:08,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:55:08,321 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:55:08,321 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:55:08,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:55:08,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:55:08,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:55:08,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:55:08,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:55:08,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:55:08,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:55:08,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:55:08,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:55:08,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:55:08,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:55:08,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:55:08,325 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:55:08,325 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:55:08,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:55:08,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:55:08,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:55:08,326 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(reach_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 -> ed3f8420ae2f88e8ad9c7f42b645f73b3c08f37e [2020-10-20 00:55:08,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:55:08,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:55:08,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:55:08,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:55:08,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:55:08,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c40.c [2020-10-20 00:55:08,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e10497c/e6904ce54c2144209920dd6c8de4b579/FLAGf7e9e8ccc [2020-10-20 00:55:09,109 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:55:09,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c40.c [2020-10-20 00:55:09,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e10497c/e6904ce54c2144209920dd6c8de4b579/FLAGf7e9e8ccc [2020-10-20 00:55:09,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e10497c/e6904ce54c2144209920dd6c8de4b579 [2020-10-20 00:55:09,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:55:09,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:55:09,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:09,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:55:09,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:55:09,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4c8870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09, skipping insertion in model container [2020-10-20 00:55:09,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:55:09,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:55:09,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:09,807 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:55:09,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:09,848 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:55:09,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09 WrapperNode [2020-10-20 00:55:09,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:09,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:09,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:55:09,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:55:09,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:09,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:55:09,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:55:09,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:55:09,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (1/1) ... [2020-10-20 00:55:09,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:55:09,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:55:09,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:55:09,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:55:09,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (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 [2020-10-20 00:55:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 00:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:55:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:55:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:55:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 00:55:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:55:10,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:55:10,320 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 00:55:10,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:10 BoogieIcfgContainer [2020-10-20 00:55:10,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:55:10,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:55:10,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:55:10,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:55:10,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:55:09" (1/3) ... [2020-10-20 00:55:10,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320fa8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:10, skipping insertion in model container [2020-10-20 00:55:10,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:09" (2/3) ... [2020-10-20 00:55:10,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320fa8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:10, skipping insertion in model container [2020-10-20 00:55:10,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:10" (3/3) ... [2020-10-20 00:55:10,349 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c40.c [2020-10-20 00:55:10,362 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:55:10,372 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:55:10,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:55:10,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:55:10,404 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:55:10,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:55:10,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:55:10,405 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:55:10,405 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:55:10,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:55:10,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:55:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:55:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:55:10,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:10,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:10,428 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:10,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493552, now seen corresponding path program 1 times [2020-10-20 00:55:10,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:55:10,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100307432] [2020-10-20 00:55:10,449 INFO L95 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 [2020-10-20 00:55:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:10,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:55:10,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:55:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:10,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:55:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:10,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100307432] [2020-10-20 00:55:10,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:10,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:55:10,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143442068] [2020-10-20 00:55:10,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:55:10,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:55:10,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:55:10,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:55:10,605 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:55:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:10,619 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-10-20 00:55:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:55:10,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:55:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:10,632 INFO L225 Difference]: With dead ends: 23 [2020-10-20 00:55:10,632 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:55:10,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:55:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:55:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:55:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:55:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:55:10,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-20 00:55:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:10,664 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:55:10,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:55:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:55:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:55:10,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:10,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:10,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:55:10,866 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:10,867 INFO L82 PathProgramCache]: Analyzing trace with hash 177687787, now seen corresponding path program 1 times [2020-10-20 00:55:10,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:55:10,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453364376] [2020-10-20 00:55:10,869 INFO L95 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 [2020-10-20 00:55:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:10,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:55:10,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:55:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:11,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:55:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:11,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453364376] [2020-10-20 00:55:11,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:11,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:55:11,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775679939] [2020-10-20 00:55:11,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:55:11,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:55:11,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:55:11,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:55:11,075 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-10-20 00:55:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:11,120 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 00:55:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:55:11,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 00:55:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:11,123 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:55:11,123 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:55:11,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:55:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:55:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:55:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:55:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 00:55:11,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-20 00:55:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:11,129 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 00:55:11,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:55:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 00:55:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:55:11,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:11,131 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:11,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:55:11,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:11,342 INFO L82 PathProgramCache]: Analyzing trace with hash 468121936, now seen corresponding path program 1 times [2020-10-20 00:55:11,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:55:11,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389803463] [2020-10-20 00:55:11,345 INFO L95 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 [2020-10-20 00:55:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:11,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 00:55:11,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:55:11,562 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:11,563 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 41 [2020-10-20 00:55:11,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 00:55:11,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 00:55:11,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 00:55:11,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 00:55:11,584 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:55:11,642 INFO L625 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2020-10-20 00:55:11,649 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:55:11,649 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:24 [2020-10-20 00:55:11,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:55:11,723 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-10-20 00:55:11,724 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:55:11,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:11,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:55:11,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:34 [2020-10-20 00:55:11,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:55:11,814 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 00:55:11,818 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:11,819 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 17 [2020-10-20 00:55:11,821 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:55:11,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:11,841 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:55:11,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:13 [2020-10-20 00:55:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:11,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:55:14,568 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-20 00:55:14,601 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:14,602 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2020-10-20 00:55:14,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:55:14,613 INFO L441 ElimStorePlain]: Different costs {0=[v_arrayElimCell_6], 2=[v_arrayElimCell_7]} [2020-10-20 00:55:14,842 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:14,842 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2020-10-20 00:55:14,844 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:55:14,849 INFO L441 ElimStorePlain]: Different costs {0=[v_arrayElimCell_8], 2=[v_arrayElimCell_9]} [2020-10-20 00:55:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:14,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389803463] [2020-10-20 00:55:14,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:55:14,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-20 00:55:14,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875904687] [2020-10-20 00:55:14,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 00:55:14,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:55:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 00:55:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=109, Unknown=6, NotChecked=0, Total=156 [2020-10-20 00:55:14,877 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 13 states. [2020-10-20 00:55:15,608 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-10-20 00:55:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:15,645 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 00:55:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 00:55:15,646 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 10 [2020-10-20 00:55:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:15,647 INFO L225 Difference]: With dead ends: 18 [2020-10-20 00:55:15,647 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 00:55:15,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=66, Invalid=168, Unknown=6, NotChecked=0, Total=240 [2020-10-20 00:55:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 00:55:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 00:55:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 00:55:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 00:55:15,653 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-20 00:55:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:15,653 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 00:55:15,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 00:55:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 00:55:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:55:15,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:15,654 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:15,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:55:15,856 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 402464885, now seen corresponding path program 2 times [2020-10-20 00:55:15,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:55:15,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306417257] [2020-10-20 00:55:15,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 00:55:15,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 00:55:15,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:55:15,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:55:15,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:55:15,971 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2020-10-20 00:55:15,974 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 00:55:16,029 INFO L625 ElimStorePlain]: treesize reduction 26, result has 51.9 percent of original size [2020-10-20 00:55:16,037 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2020-10-20 00:55:16,038 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:55:16,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:16,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306417257] [2020-10-20 00:55:16,074 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:55:16,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [160443217] [2020-10-20 00:55:16,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:55:16,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 00:55:16,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:55:16,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 00:55:16,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:55:16,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 334 treesize of output 318 [2020-10-20 00:55:16,221 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 00:55:16,358 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2020-10-20 00:55:16,359 INFO L625 ElimStorePlain]: treesize reduction 268, result has 9.5 percent of original size [2020-10-20 00:55:16,366 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2020-10-20 00:55:16,366 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:55:16,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:16,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:55:16,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161302781] [2020-10-20 00:55:16,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:55:16,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 00:55:16,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:55:16,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:55:16,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:55:16,473 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 145 [2020-10-20 00:55:16,476 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 00:55:16,598 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-10-20 00:55:16,598 INFO L625 ElimStorePlain]: treesize reduction 117, result has 19.3 percent of original size [2020-10-20 00:55:16,605 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2020-10-20 00:55:16,605 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:55:16,624 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:55:16,626 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:55:16,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:16,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:55:16,627 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:55:16,627 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:55:17,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:55:17,251 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:55:17,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:55:17 BoogieIcfgContainer [2020-10-20 00:55:17,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:55:17,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:55:17,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:55:17,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:55:17,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:10" (3/4) ... [2020-10-20 00:55:17,257 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:55:17,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:55:17,259 INFO L168 Benchmark]: Toolchain (without parser) took 7767.69 ms. Allocated memory was 31.5 MB in the beginning and 48.8 MB in the end (delta: 17.3 MB). Free memory was 13.3 MB in the beginning and 23.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,260 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 30.4 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 40.1 kB). Peak memory consumption was 40.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.89 ms. Allocated memory was 31.5 MB in the beginning and 40.4 MB in the end (delta: 8.9 MB). Free memory was 12.4 MB in the beginning and 17.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 40.4 MB. Free memory was 17.2 MB in the beginning and 15.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,262 INFO L168 Benchmark]: Boogie Preprocessor took 33.69 ms. Allocated memory was 40.4 MB in the beginning and 39.8 MB in the end (delta: -524.3 kB). Free memory was 15.5 MB in the beginning and 22.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,263 INFO L168 Benchmark]: RCFGBuilder took 404.80 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 22.6 MB in the beginning and 22.1 MB in the end (delta: 504.6 kB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,264 INFO L168 Benchmark]: TraceAbstraction took 6925.24 ms. Allocated memory was 40.9 MB in the beginning and 48.8 MB in the end (delta: 7.9 MB). Free memory was 21.5 MB in the beginning and 24.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,264 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 48.8 MB. Free memory was 24.3 MB in the beginning and 23.8 MB in the end (delta: 447.6 kB). Peak memory consumption was 447.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:55:17,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 30.4 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 40.1 kB). Peak memory consumption was 40.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 350.89 ms. Allocated memory was 31.5 MB in the beginning and 40.4 MB in the end (delta: 8.9 MB). Free memory was 12.4 MB in the beginning and 17.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 40.4 MB. Free memory was 17.2 MB in the beginning and 15.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.69 ms. Allocated memory was 40.4 MB in the beginning and 39.8 MB in the end (delta: -524.3 kB). Free memory was 15.5 MB in the beginning and 22.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 404.80 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 22.6 MB in the beginning and 22.1 MB in the end (delta: 504.6 kB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6925.24 ms. Allocated memory was 40.9 MB in the beginning and 48.8 MB in the end (delta: 7.9 MB). Free memory was 21.5 MB in the beginning and 24.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 14.3 GB. * Witness Printer took 4.94 ms. Allocated memory is still 48.8 MB. Free memory was 24.3 MB in the beginning and 23.8 MB in the end (delta: 447.6 kB). Peak memory consumption was 447.6 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: 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. Possible FailurePath: [L7] char x[100], y[100]; [L8] int i,j,k; [L11] k = __VERIFIER_nondet_int() [L13] i = 0 [L14] EXPR x[i] [L14] COND TRUE x[i] != 0 [L15] EXPR x[i] [L15] y[i] = x[i] [L16] i++ [L14] EXPR x[i] [L14] COND TRUE x[i] != 0 [L15] EXPR x[i] [L15] y[i] = x[i] [L16] i++ [L14] EXPR x[i] [L14] COND FALSE !(x[i] != 0) [L18] y[i] = 0 [L20] COND TRUE k >= 0 && k < i [L21] EXPR y[k] [L21] COND TRUE y[k] == 0 [L3] __assert_fail("0", "n.c40.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 6.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 15 SDslu, 26 SDs, 0 SdLazy, 62 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.5s Time, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 15 QuantifiedInterpolants, 3925 SizeOfPredicates, 14 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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...