./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/num_conversion_1.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/bitvector/num_conversion_1.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 22f8891fc10bb8c305de18eb9540699e7b8a01ce .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/bitvector/num_conversion_1.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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:20:58,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:20:58,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:20:58,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:20:58,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:20:58,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:20:58,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:20:58,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:20:58,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:20:58,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:20:58,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:20:58,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:20:58,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:20:58,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:20:58,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:20:58,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:20:58,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:20:58,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:20:58,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:20:58,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:20:58,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:20:58,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:20:58,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:20:58,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:20:58,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:20:58,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:20:58,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:20:58,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:20:58,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:20:58,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:20:58,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:20:58,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:20:58,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:20:58,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:20:58,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:20:58,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:20:58,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:20:58,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:20:58,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:20:58,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:20:58,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:20:58,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:20:58,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:20:58,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:20:58,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:20:58,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:20:58,426 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:20:58,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:20:58,426 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:20:58,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:20:58,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:20:58,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:20:58,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:20:58,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:20:58,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:20:58,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:20:58,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:20:58,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:20:58,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:20:58,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:20:58,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:20:58,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:20:58,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:20:58,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:20:58,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:20:58,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:20:58,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:20:58,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:20:58,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:20:58,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:20:58,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:20:58,432 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 -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-10-19 22:20:58,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:20:58,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:20:58,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:20:58,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:20:58,673 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:20:58,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-10-19 22:20:58,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee8336aa/849de9e310f544a78c5b0ef29473846d/FLAGd59953869 [2020-10-19 22:20:59,208 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:20:59,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-10-19 22:20:59,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee8336aa/849de9e310f544a78c5b0ef29473846d/FLAGd59953869 [2020-10-19 22:20:59,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee8336aa/849de9e310f544a78c5b0ef29473846d [2020-10-19 22:20:59,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:20:59,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:20:59,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:20:59,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:20:59,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:20:59,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:20:59,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af78815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59, skipping insertion in model container [2020-10-19 22:20:59,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:20:59,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:20:59,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:20:59,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:20:59,914 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:20:59,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:20:59,951 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:20:59,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59 WrapperNode [2020-10-19 22:20:59,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:20:59,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:20:59,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:20:59,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:20:59,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:20:59,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:20:59,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:20:59,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:20:59,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:20:59,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:00,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (1/1) ... [2020-10-19 22:21:00,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:00,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:00,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:00,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:00,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (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 [2020-10-19 22:21:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:21:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:00,293 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:00,293 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:00,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:00 BoogieIcfgContainer [2020-10-19 22:21:00,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:00,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:00,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:00,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:00,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:20:59" (1/3) ... [2020-10-19 22:21:00,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb68879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:00, skipping insertion in model container [2020-10-19 22:21:00,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:59" (2/3) ... [2020-10-19 22:21:00,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb68879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:00, skipping insertion in model container [2020-10-19 22:21:00,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:00" (3/3) ... [2020-10-19 22:21:00,308 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-10-19 22:21:00,320 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:00,327 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:00,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:00,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:00,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:00,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:00,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:00,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:00,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:00,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:00,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-19 22:21:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 22:21:00,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:00,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 22:21:00,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:00,387 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-10-19 22:21:00,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:00,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075407234] [2020-10-19 22:21:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:00,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075407234] [2020-10-19 22:21:00,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:00,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:21:00,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793033975] [2020-10-19 22:21:00,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:21:00,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:00,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:21:00,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:21:00,568 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-19 22:21:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:00,589 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-19 22:21:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:21:00,591 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-19 22:21:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:00,602 INFO L225 Difference]: With dead ends: 22 [2020-10-19 22:21:00,603 INFO L226 Difference]: Without dead ends: 9 [2020-10-19 22:21:00,607 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 [2020-10-19 22:21:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-19 22:21:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-19 22:21:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 22:21:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-10-19 22:21:00,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-10-19 22:21:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:00,652 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-10-19 22:21:00,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:21:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-10-19 22:21:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 22:21:00,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:00,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 22:21:00,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:21:00,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:00,655 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-10-19 22:21:00,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:00,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655058471] [2020-10-19 22:21:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:00,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655058471] [2020-10-19 22:21:00,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:00,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:21:00,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407443798] [2020-10-19 22:21:00,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:21:00,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:00,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:21:00,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:21:00,759 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-10-19 22:21:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:00,836 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-19 22:21:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:21:00,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 22:21:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:00,838 INFO L225 Difference]: With dead ends: 16 [2020-10-19 22:21:00,838 INFO L226 Difference]: Without dead ends: 12 [2020-10-19 22:21:00,840 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 [2020-10-19 22:21:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-19 22:21:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-10-19 22:21:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 22:21:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-19 22:21:00,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2020-10-19 22:21:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:00,845 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-19 22:21:00,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:21:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-19 22:21:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 22:21:00,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:00,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:00,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:21:00,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2020-10-19 22:21:00,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:00,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790045710] [2020-10-19 22:21:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:00,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790045710] [2020-10-19 22:21:00,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901720164] [2020-10-19 22:21:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:01,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:21:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:01,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:01,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 22:21:01,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089025715] [2020-10-19 22:21:01,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:21:01,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:01,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:21:01,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:21:01,077 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2020-10-19 22:21:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:01,105 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-10-19 22:21:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:01,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 22:21:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:01,107 INFO L225 Difference]: With dead ends: 19 [2020-10-19 22:21:01,107 INFO L226 Difference]: Without dead ends: 15 [2020-10-19 22:21:01,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:21:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-19 22:21:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-10-19 22:21:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 22:21:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-10-19 22:21:01,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2020-10-19 22:21:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:01,113 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-10-19 22:21:01,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:21:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-10-19 22:21:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:21:01,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:01,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:01,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 22:21:01,326 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:01,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 2 times [2020-10-19 22:21:01,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:01,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630947471] [2020-10-19 22:21:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:01,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630947471] [2020-10-19 22:21:01,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834364030] [2020-10-19 22:21:01,454 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:01,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:21:01,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:01,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:21:01,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:01,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:01,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-19 22:21:01,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404836316] [2020-10-19 22:21:01,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:21:01,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:01,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:21:01,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:21:01,575 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2020-10-19 22:21:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:01,625 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-10-19 22:21:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:21:01,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-19 22:21:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:01,627 INFO L225 Difference]: With dead ends: 22 [2020-10-19 22:21:01,627 INFO L226 Difference]: Without dead ends: 18 [2020-10-19 22:21:01,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:21:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-19 22:21:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-10-19 22:21:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-19 22:21:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-10-19 22:21:01,638 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2020-10-19 22:21:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:01,639 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-10-19 22:21:01,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:21:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-10-19 22:21:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:21:01,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:01,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:01,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:01,854 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:01,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1268104729, now seen corresponding path program 3 times [2020-10-19 22:21:01,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:01,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349916518] [2020-10-19 22:21:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:01,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349916518] [2020-10-19 22:21:01,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046960578] [2020-10-19 22:21:01,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:01,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 22:21:01,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:01,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:21:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:02,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:02,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-19 22:21:02,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806803384] [2020-10-19 22:21:02,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:21:02,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:02,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:21:02,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:21:02,042 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 9 states. [2020-10-19 22:21:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:02,093 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-10-19 22:21:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:21:02,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-19 22:21:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:02,095 INFO L225 Difference]: With dead ends: 25 [2020-10-19 22:21:02,095 INFO L226 Difference]: Without dead ends: 21 [2020-10-19 22:21:02,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:21:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-19 22:21:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-10-19 22:21:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 22:21:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-19 22:21:02,101 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2020-10-19 22:21:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:02,102 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-19 22:21:02,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:21:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-19 22:21:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:21:02,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:02,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:02,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:02,307 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:02,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 4 times [2020-10-19 22:21:02,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:02,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665489128] [2020-10-19 22:21:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:02,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665489128] [2020-10-19 22:21:02,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611934592] [2020-10-19 22:21:02,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:02,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 22:21:02,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:02,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:21:02,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:02,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:02,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-19 22:21:02,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732163849] [2020-10-19 22:21:02,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 22:21:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 22:21:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:21:02,525 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 11 states. [2020-10-19 22:21:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:02,605 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-10-19 22:21:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:21:02,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-19 22:21:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:02,607 INFO L225 Difference]: With dead ends: 28 [2020-10-19 22:21:02,607 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 22:21:02,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:21:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 22:21:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-10-19 22:21:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 22:21:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-10-19 22:21:02,613 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 18 [2020-10-19 22:21:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:02,614 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-10-19 22:21:02,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 22:21:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-10-19 22:21:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:21:02,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:02,615 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:02,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:02,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash -133759111, now seen corresponding path program 5 times [2020-10-19 22:21:02,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:02,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748140463] [2020-10-19 22:21:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:02,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748140463] [2020-10-19 22:21:02,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395505001] [2020-10-19 22:21:02,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:02,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-19 22:21:02,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:02,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 22:21:02,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:03,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:03,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-10-19 22:21:03,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803350144] [2020-10-19 22:21:03,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 22:21:03,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 22:21:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:21:03,080 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 13 states. [2020-10-19 22:21:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:03,185 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-10-19 22:21:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:21:03,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-19 22:21:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:03,186 INFO L225 Difference]: With dead ends: 31 [2020-10-19 22:21:03,186 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 22:21:03,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:21:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 22:21:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-19 22:21:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 22:21:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-19 22:21:03,199 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2020-10-19 22:21:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:03,208 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-19 22:21:03,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 22:21:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-10-19 22:21:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:21:03,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:03,209 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:03,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-19 22:21:03,419 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:03,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1786738894, now seen corresponding path program 6 times [2020-10-19 22:21:03,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:03,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032867906] [2020-10-19 22:21:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:03,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032867906] [2020-10-19 22:21:03,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751406741] [2020-10-19 22:21:03,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-10-19 22:21:03,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-19 22:21:03,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:03,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 22:21:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:03,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:03,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-10-19 22:21:03,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550649713] [2020-10-19 22:21:03,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 22:21:03,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 22:21:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-19 22:21:03,689 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 15 states. [2020-10-19 22:21:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:03,804 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-10-19 22:21:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:21:03,805 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-10-19 22:21:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:03,805 INFO L225 Difference]: With dead ends: 34 [2020-10-19 22:21:03,806 INFO L226 Difference]: Without dead ends: 30 [2020-10-19 22:21:03,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-19 22:21:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-19 22:21:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-19 22:21:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 22:21:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-19 22:21:03,817 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 24 [2020-10-19 22:21:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:03,817 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-19 22:21:03,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 22:21:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-19 22:21:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:21:03,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:03,818 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:04,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:04,028 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:04,029 INFO L82 PathProgramCache]: Analyzing trace with hash 387561689, now seen corresponding path program 7 times [2020-10-19 22:21:04,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:04,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375950188] [2020-10-19 22:21:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:04,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375950188] [2020-10-19 22:21:04,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554793350] [2020-10-19 22:21:04,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:04,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 22:21:04,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:04,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:04,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-10-19 22:21:04,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931264625] [2020-10-19 22:21:04,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-19 22:21:04,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:04,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-19 22:21:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-19 22:21:04,396 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 17 states. [2020-10-19 22:21:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:04,537 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-10-19 22:21:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:21:04,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-10-19 22:21:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:04,539 INFO L225 Difference]: With dead ends: 37 [2020-10-19 22:21:04,539 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 22:21:04,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-19 22:21:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 22:21:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-19 22:21:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 22:21:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-10-19 22:21:04,545 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 27 [2020-10-19 22:21:04,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:04,545 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-10-19 22:21:04,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-19 22:21:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-10-19 22:21:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:21:04,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:04,547 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:04,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:04,759 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:04,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:04,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 8 times [2020-10-19 22:21:04,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:04,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067167088] [2020-10-19 22:21:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:04,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:04,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:04,812 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:21:04,813 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:04,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:21:04,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:04 BoogieIcfgContainer [2020-10-19 22:21:04,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:04,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:04,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:04,858 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:04,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:00" (3/4) ... [2020-10-19 22:21:04,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:21:04,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:04,866 INFO L168 Benchmark]: Toolchain (without parser) took 5240.00 ms. Allocated memory was 36.7 MB in the beginning and 59.2 MB in the end (delta: 22.5 MB). Free memory was 14.5 MB in the beginning and 30.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,867 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 34.1 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 66.4 kB). Peak memory consumption was 33.3 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.41 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 13.6 MB in the beginning and 25.3 MB in the end (delta: -11.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.26 ms. Allocated memory is still 44.6 MB. Free memory was 25.3 MB in the beginning and 23.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,870 INFO L168 Benchmark]: Boogie Preprocessor took 24.57 ms. Allocated memory is still 44.6 MB. Free memory was 23.5 MB in the beginning and 22.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,871 INFO L168 Benchmark]: RCFGBuilder took 276.17 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 22.2 MB in the beginning and 23.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,872 INFO L168 Benchmark]: TraceAbstraction took 4556.60 ms. Allocated memory was 47.2 MB in the beginning and 59.2 MB in the end (delta: 12.1 MB). Free memory was 22.8 MB in the beginning and 30.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:04,872 INFO L168 Benchmark]: Witness Printer took 5.96 ms. Allocated memory is still 59.2 MB. Free memory is still 30.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:21:04,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 34.1 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 66.4 kB). Peak memory consumption was 33.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 321.41 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 13.6 MB in the beginning and 25.3 MB in the end (delta: -11.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.26 ms. Allocated memory is still 44.6 MB. Free memory was 25.3 MB in the beginning and 23.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.57 ms. Allocated memory is still 44.6 MB. Free memory was 23.5 MB in the beginning and 22.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 276.17 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 22.2 MB in the beginning and 23.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4556.60 ms. Allocated memory was 47.2 MB in the beginning and 59.2 MB in the end (delta: 12.1 MB). Free memory was 22.8 MB in the beginning and 30.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.96 ms. Allocated memory is still 59.2 MB. Free memory is still 30.6 MB. There was no memory consumed. 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: overapproximation of shiftLeft at line 24, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND FALSE !(c < (unsigned char)8) [L7] COND TRUE !(cond) [L3] __assert_fail("0", "num_conversion_1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 142 SDslu, 636 SDs, 0 SdLazy, 619 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, 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, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 25750 SizeOfPredicates, 7 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 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... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:07,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:21:07,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:21:07,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:21:07,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:21:07,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:21:07,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:21:07,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:21:07,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:21:07,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:21:07,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:21:07,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:21:07,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:21:07,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:21:07,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:21:07,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:21:07,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:21:07,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:21:07,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:21:07,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:21:07,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:21:07,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:21:07,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:21:07,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:21:07,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:21:07,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:21:07,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:21:07,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:21:07,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:21:07,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:21:07,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:07,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:07,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:07,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:07,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:07,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:07,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:07,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:07,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:07,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:07,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:07,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:21:07,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:07,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:07,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:07,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:07,124 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:07,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:07,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:07,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:07,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:07,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:07,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:07,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:07,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:21:07,126 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:21:07,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:07,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:07,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:07,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:07,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:07,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:07,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:07,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:07,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:07,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:07,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:07,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:07,129 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:21:07,130 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:21:07,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:07,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:07,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:21:07,131 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 -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-10-19 22:21:07,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:07,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:07,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:07,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:07,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:07,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-10-19 22:21:07,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7ebf39a/6451002dd0a64725866bc8efe2e69769/FLAG99762a5dd [2020-10-19 22:21:08,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:08,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-10-19 22:21:08,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7ebf39a/6451002dd0a64725866bc8efe2e69769/FLAG99762a5dd [2020-10-19 22:21:08,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7ebf39a/6451002dd0a64725866bc8efe2e69769 [2020-10-19 22:21:08,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:08,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:08,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:08,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:08,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:08,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a58770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08, skipping insertion in model container [2020-10-19 22:21:08,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:08,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:08,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:08,680 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:08,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:08,717 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:08,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08 WrapperNode [2020-10-19 22:21:08,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:08,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:08,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:08,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:08,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:08,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:08,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:08,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:08,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (1/1) ... [2020-10-19 22:21:08,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:08,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:08,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:08,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:08,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (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 [2020-10-19 22:21:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:21:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:09,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:09,089 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:09,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:09 BoogieIcfgContainer [2020-10-19 22:21:09,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:09,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:09,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:09,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:09,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:08" (1/3) ... [2020-10-19 22:21:09,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae9227c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:09, skipping insertion in model container [2020-10-19 22:21:09,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:08" (2/3) ... [2020-10-19 22:21:09,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae9227c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:09, skipping insertion in model container [2020-10-19 22:21:09,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:09" (3/3) ... [2020-10-19 22:21:09,100 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-10-19 22:21:09,113 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:09,121 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:09,136 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:09,163 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:09,164 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:09,164 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:09,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:09,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:09,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:09,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:09,165 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-19 22:21:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 22:21:09,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:09,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 22:21:09,199 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:09,208 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-10-19 22:21:09,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:09,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147001130] [2020-10-19 22:21:09,226 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 [2020-10-19 22:21:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:09,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-19 22:21:09,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:09,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:09,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147001130] [2020-10-19 22:21:09,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:09,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 22:21:09,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362267301] [2020-10-19 22:21:09,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:21:09,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:09,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:21:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:21:09,366 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-19 22:21:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:09,383 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-19 22:21:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:21:09,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-19 22:21:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:09,395 INFO L225 Difference]: With dead ends: 22 [2020-10-19 22:21:09,396 INFO L226 Difference]: Without dead ends: 9 [2020-10-19 22:21:09,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:21:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-19 22:21:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-19 22:21:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 22:21:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-10-19 22:21:09,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-10-19 22:21:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:09,435 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-10-19 22:21:09,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:21:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-10-19 22:21:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 22:21:09,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:09,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 22:21:09,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:21:09,651 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:09,652 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-10-19 22:21:09,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:09,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121100345] [2020-10-19 22:21:09,654 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 [2020-10-19 22:21:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:21:09,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:09,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:09,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121100345] [2020-10-19 22:21:09,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:09,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:21:09,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979282611] [2020-10-19 22:21:09,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:21:09,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:09,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:21:09,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:09,742 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-10-19 22:21:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:09,770 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-10-19 22:21:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:21:09,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-19 22:21:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:09,771 INFO L225 Difference]: With dead ends: 17 [2020-10-19 22:21:09,771 INFO L226 Difference]: Without dead ends: 13 [2020-10-19 22:21:09,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:21:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-19 22:21:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-19 22:21:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 22:21:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-10-19 22:21:09,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2020-10-19 22:21:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:09,781 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-10-19 22:21:09,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:21:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-10-19 22:21:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:21:09,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:09,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:09,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:21:09,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2020-10-19 22:21:09,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:09,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976039785] [2020-10-19 22:21:09,997 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 [2020-10-19 22:21:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:10,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:21:10,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:21:10,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:21:10,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976039785] [2020-10-19 22:21:10,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:10,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:21:10,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288166646] [2020-10-19 22:21:10,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:21:10,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:10,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:21:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:21:10,124 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2020-10-19 22:21:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:10,174 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-19 22:21:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:21:10,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-19 22:21:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:10,176 INFO L225 Difference]: With dead ends: 28 [2020-10-19 22:21:10,176 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 22:21:10,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:21:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 22:21:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-10-19 22:21:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 22:21:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-10-19 22:21:10,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2020-10-19 22:21:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:10,182 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-10-19 22:21:10,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:21:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-10-19 22:21:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:21:10,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:10,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:10,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:21:10,399 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:10,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2020-10-19 22:21:10,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:10,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891295299] [2020-10-19 22:21:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-19 22:21:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:10,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:21:10,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:10,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:10,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891295299] [2020-10-19 22:21:10,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:10,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-19 22:21:10,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750351514] [2020-10-19 22:21:10,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:21:10,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:10,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:21:10,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:21:10,554 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2020-10-19 22:21:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:10,688 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-10-19 22:21:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:21:10,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-19 22:21:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:10,690 INFO L225 Difference]: With dead ends: 29 [2020-10-19 22:21:10,690 INFO L226 Difference]: Without dead ends: 25 [2020-10-19 22:21:10,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:21:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-19 22:21:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-19 22:21:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 22:21:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-10-19 22:21:10,704 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2020-10-19 22:21:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:10,705 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-10-19 22:21:10,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:21:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-10-19 22:21:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:21:10,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:10,708 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:10,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:21:10,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2020-10-19 22:21:10,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:10,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637834671] [2020-10-19 22:21:10,934 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 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:10,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:21:10,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:10,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:21:10,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:21:11,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:21:11,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637834671] [2020-10-19 22:21:11,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:11,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-19 22:21:11,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471512976] [2020-10-19 22:21:11,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:21:11,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:11,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:21:11,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:21:11,191 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 10 states. [2020-10-19 22:21:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:11,473 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-19 22:21:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 22:21:11,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-19 22:21:11,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:11,475 INFO L225 Difference]: With dead ends: 54 [2020-10-19 22:21:11,475 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 22:21:11,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-19 22:21:11,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 22:21:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-10-19 22:21:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 22:21:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-19 22:21:11,484 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2020-10-19 22:21:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:11,484 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-19 22:21:11,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:21:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-19 22:21:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:21:11,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:11,486 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:11,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:21:11,697 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:11,698 INFO L82 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2020-10-19 22:21:11,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:11,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604912823] [2020-10-19 22:21:11,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:11,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-19 22:21:11,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:11,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:21:11,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-19 22:21:11,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-19 22:21:12,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604912823] [2020-10-19 22:21:12,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:12,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-19 22:21:12,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499691576] [2020-10-19 22:21:12,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:21:12,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:12,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:21:12,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:21:12,067 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-10-19 22:21:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:12,327 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-10-19 22:21:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:21:12,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-19 22:21:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:12,328 INFO L225 Difference]: With dead ends: 53 [2020-10-19 22:21:12,329 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 22:21:12,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-19 22:21:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 22:21:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-19 22:21:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 22:21:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-19 22:21:12,337 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2020-10-19 22:21:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:12,338 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-19 22:21:12,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:21:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-19 22:21:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:21:12,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:12,340 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:12,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 22:21:12,552 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2020-10-19 22:21:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540344893] [2020-10-19 22:21:12,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:12,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 22:21:12,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 22:21:12,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 22:21:12,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 22:21:13,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540344893] [2020-10-19 22:21:13,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:21:13,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-10-19 22:21:13,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339350766] [2020-10-19 22:21:13,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 22:21:13,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 22:21:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-10-19 22:21:13,536 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 28 states. [2020-10-19 22:21:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:14,649 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-19 22:21:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 22:21:14,650 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 30 [2020-10-19 22:21:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:14,651 INFO L225 Difference]: With dead ends: 53 [2020-10-19 22:21:14,651 INFO L226 Difference]: Without dead ends: 37 [2020-10-19 22:21:14,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 22:21:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-19 22:21:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-19 22:21:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 22:21:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-19 22:21:14,661 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2020-10-19 22:21:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:14,661 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-19 22:21:14,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 22:21:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-19 22:21:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:21:14,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:14,663 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:14,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 22:21:14,876 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:14,877 INFO L82 PathProgramCache]: Analyzing trace with hash -166593550, now seen corresponding path program 5 times [2020-10-19 22:21:14,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:14,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920135740] [2020-10-19 22:21:14,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:14,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-19 22:21:14,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:21:14,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 22:21:14,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:21:15,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:21:16,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920135740] [2020-10-19 22:21:16,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:16,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [] total 34 [2020-10-19 22:21:16,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124058386] [2020-10-19 22:21:16,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-19 22:21:16,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:16,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-19 22:21:16,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 22:21:16,472 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 34 states. [2020-10-19 22:21:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:16,658 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-10-19 22:21:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 22:21:16,659 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 36 [2020-10-19 22:21:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:16,660 INFO L225 Difference]: With dead ends: 39 [2020-10-19 22:21:16,660 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:21:16,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 22:21:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:21:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:21:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:21:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:21:16,662 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-10-19 22:21:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:16,662 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:21:16,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-19 22:21:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:21:16,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:21:16,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 22:21:16,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:21:17,702 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 140 [2020-10-19 22:21:17,714 INFO L277 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-10-19 22:21:17,715 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:21:17,715 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse14 ((_ zero_extend 24) ULTIMATE.start_main_~c~0))) (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse14 (_ bv1 32)))))) (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse17 (_ bv1 32)))))) (let ((.cse11 ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) (.cse15 ((_ zero_extend 24) ULTIMATE.start_main_~y~0)) (.cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse16))))) (let ((.cse2 (exists ((v_ULTIMATE.start_main_~c~0_28 (_ BitVec 8))) (let ((.cse25 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_28))) (and (= ((_ extract 7 0) (bvadd .cse25 (_ bv1 32))) ULTIMATE.start_main_~c~0) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse25)))))) (_ bv0 32))))))) (.cse0 (= (_ bv5 8) ULTIMATE.start_main_~y~0)) (.cse13 (or (bvslt .cse17 (_ bv8 32)) (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)))) (.cse3 (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 .cse12))))) (.cse10 (= (_ bv1 8) ULTIMATE.start_main_~y~0)) (.cse1 (= (_ bv37 8) ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv4 8) ULTIMATE.start_main_~c~0) .cse1) (and .cse1 .cse2 .cse3 (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse9 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse9 (_ bv1 32)))))) (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse6 (_ bv1 32)))))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 (_ bv1 32)))))) (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 (_ bv1 32)))))) (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 (_ bv1 32)))))) (and (bvslt .cse4 (_ bv8 32)) (bvslt .cse5 (_ bv8 32)) (bvslt .cse6 (_ bv8 32)) (bvslt .cse7 (_ bv8 32)) (bvslt .cse8 (_ bv8 32)) (bvslt .cse9 (_ bv8 32)) (= ((_ extract 7 0) (bvadd .cse8 (_ bv1 32))) ULTIMATE.start_main_~c~0)))))))))) (and (= (_ bv2 8) ULTIMATE.start_main_~c~0) .cse1 .cse10) (and .cse0 (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv252 8))) .cse1 (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 .cse12))) (_ bv0 32))) .cse2) (and .cse13 (= ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse14))) .cse15))) .cse11) (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse16 (_ bv1 32)))) (_ bv1 32))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse17)))))))))) .cse1) (and .cse0 .cse1 (= (_ bv5 8) ULTIMATE.start_main_~c~0)) (and .cse13 (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse24 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse20 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse24 (_ bv1 32)))))) (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse20 (_ bv1 32)))))) (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse19 (_ bv1 32)))))) (let ((.cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse18 (_ bv1 32)))))) (let ((.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse21 (_ bv1 32)))))) (let ((.cse23 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse22 (_ bv1 32)))))) (and (bvslt .cse18 (_ bv8 32)) (bvslt .cse19 (_ bv8 32)) (bvslt .cse20 (_ bv8 32)) (bvslt .cse21 (_ bv8 32)) (bvslt .cse22 (_ bv8 32)) (bvslt .cse23 (_ bv8 32)) (bvslt .cse24 (_ bv8 32)) (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse23 (_ bv1 32))))))))))))) .cse1 .cse3) (and (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv255 8))) (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse1 .cse10) (and (= (_ bv0 8) ULTIMATE.start_main_~c~0) .cse1 (= (_ bv0 8) ULTIMATE.start_main_~y~0)))))))) [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L277 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:21:17,716 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-19 22:21:17,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,729 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,730 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,730 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,731 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,731 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,732 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,732 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,736 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,736 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,737 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,749 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,750 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,750 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,750 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,751 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,751 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,751 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,752 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,752 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,753 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,753 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,753 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,754 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,754 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,754 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,755 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,755 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,756 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,756 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:17 BoogieIcfgContainer [2020-10-19 22:21:17,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:17,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:17,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:17,769 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:17,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:09" (3/4) ... [2020-10-19 22:21:17,774 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:21:17,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 22:21:17,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:21:17,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:21:17,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:21:17,812 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((5bv8 == y && 4bv8 == c) && 37bv8 == x) || (((37bv8 == x && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32))) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0])) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c))) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || ((((5bv8 == y && 0bv8 == ~bvadd64(bit, 252bv8)) && 37bv8 == x) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32)))) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]), ~zero_extendFrom8To32(y))[7:0]) == ~zero_extendFrom8To32(x)) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]))[7:0])) && 37bv8 == x)) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0])) && 37bv8 == x) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) [2020-10-19 22:21:17,828 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:21:17,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:17,831 INFO L168 Benchmark]: Toolchain (without parser) took 9394.33 ms. Allocated memory was 40.9 MB in the beginning and 59.2 MB in the end (delta: 18.4 MB). Free memory was 18.4 MB in the beginning and 8.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,831 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 6.7 MB in the beginning and 6.6 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.98 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.6 MB in the beginning and 18.1 MB in the end (delta: -512.6 kB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.64 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 16.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,834 INFO L168 Benchmark]: Boogie Preprocessor took 27.36 ms. Allocated memory is still 41.9 MB. Free memory was 16.4 MB in the beginning and 15.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,835 INFO L168 Benchmark]: RCFGBuilder took 303.01 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 15.0 MB in the beginning and 18.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,836 INFO L168 Benchmark]: TraceAbstraction took 8675.59 ms. Allocated memory was 43.0 MB in the beginning and 59.2 MB in the end (delta: 16.3 MB). Free memory was 17.6 MB in the beginning and 12.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,836 INFO L168 Benchmark]: Witness Printer took 60.02 ms. Allocated memory is still 59.2 MB. Free memory was 12.0 MB in the beginning and 8.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:17,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 6.7 MB in the beginning and 6.6 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 275.98 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.6 MB in the beginning and 18.1 MB in the end (delta: -512.6 kB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.64 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 16.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.36 ms. Allocated memory is still 41.9 MB. Free memory was 16.4 MB in the beginning and 15.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 303.01 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 15.0 MB in the beginning and 18.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8675.59 ms. Allocated memory was 43.0 MB in the beginning and 59.2 MB in the end (delta: 16.3 MB). Free memory was 17.6 MB in the beginning and 12.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 14.3 GB. * Witness Printer took 60.02 ms. Allocated memory is still 59.2 MB. Free memory was 12.0 MB in the beginning and 8.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] * 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 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant [2020-10-19 22:21:17,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,870 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,871 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,871 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,871 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,872 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,872 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,872 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,873 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,873 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,873 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,874 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,874 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,874 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,875 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,875 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,878 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,878 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,879 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,879 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,879 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-10-19 22:21:17,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-10-19 22:21:17,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] Derived loop invariant: (((((((((5bv8 == y && 4bv8 == c) && 37bv8 == x) || (((37bv8 == x && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32))) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0])) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c))) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || ((((5bv8 == y && 0bv8 == ~bvadd64(bit, 252bv8)) && 37bv8 == x) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32)))) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]), ~zero_extendFrom8To32(y))[7:0]) == ~zero_extendFrom8To32(x)) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]))[7:0])) && 37bv8 == x)) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0])) && 37bv8 == x) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 10, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 143 SDslu, 316 SDs, 0 SdLazy, 697 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, 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, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 533 HoareAnnotationTreeSize, 3 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 284 ConstructedInterpolants, 39 QuantifiedInterpolants, 129955 SizeOfPredicates, 25 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 472/698 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 proved your program to be correct! Received shutdown request...