./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs3f.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/array-fpi/brs3f.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 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:10:38,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:10:38,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:10:38,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:10:38,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:10:38,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:10:38,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:10:38,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:10:38,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:10:38,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:10:38,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:10:38,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:10:38,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:10:38,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:10:38,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:10:38,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:10:38,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:10:38,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:10:38,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:10:38,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:10:38,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:10:38,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:10:38,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:10:38,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:10:38,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:10:38,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:10:38,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:10:38,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:10:38,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:10:38,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:10:38,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:10:38,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:10:38,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:10:38,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:10:38,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:10:38,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:10:38,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:10:38,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:10:38,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:10:38,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:10:38,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:10:38,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:10:38,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:10:38,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:10:38,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:10:38,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:10:38,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:10:38,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:10:38,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:10:38,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:10:38,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:10:38,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:10:38,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:10:38,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:10:38,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:10:38,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:10:38,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:10:38,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:10:38,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:10:38,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:10:38,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:10:38,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:10:38,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:10:38,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:10:38,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:10:38,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:10:38,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:10:38,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:10:38,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:10:38,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:10:38,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:10:38,581 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 -> 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 [2020-10-19 22:10:38,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:10:38,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:10:38,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:10:38,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:10:38,815 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:10:38,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs3f.c [2020-10-19 22:10:38,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94789183e/3b4d3d34c58545eea0ae80109672e6cc/FLAGc64158d94 [2020-10-19 22:10:39,345 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:10:39,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3f.c [2020-10-19 22:10:39,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94789183e/3b4d3d34c58545eea0ae80109672e6cc/FLAGc64158d94 [2020-10-19 22:10:39,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94789183e/3b4d3d34c58545eea0ae80109672e6cc [2020-10-19 22:10:39,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:10:39,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:10:39,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:10:39,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:10:39,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:10:39,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:10:39" (1/1) ... [2020-10-19 22:10:39,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7082d526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:39, skipping insertion in model container [2020-10-19 22:10:39,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:10:39" (1/1) ... [2020-10-19 22:10:39,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:10:39,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:10:40,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:10:40,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:10:40,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:10:40,052 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:10:40,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40 WrapperNode [2020-10-19 22:10:40,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:10:40,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:10:40,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:10:40,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:10:40,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:10:40,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:10:40,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:10:40,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:10:40,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (1/1) ... [2020-10-19 22:10:40,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:10:40,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:10:40,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:10:40,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:10:40,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (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 22:10:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:10:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:10:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:10:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:10:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:10:40,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:10:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:10:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 22:10:40,426 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:10:40,426 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-19 22:10:40,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:10:40 BoogieIcfgContainer [2020-10-19 22:10:40,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:10:40,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:10:40,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:10:40,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:10:40,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:10:39" (1/3) ... [2020-10-19 22:10:40,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785e6264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:10:40, skipping insertion in model container [2020-10-19 22:10:40,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:10:40" (2/3) ... [2020-10-19 22:10:40,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785e6264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:10:40, skipping insertion in model container [2020-10-19 22:10:40,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:10:40" (3/3) ... [2020-10-19 22:10:40,437 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-10-19 22:10:40,449 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:10:40,469 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:10:40,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:10:40,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:10:40,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:10:40,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:10:40,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:10:40,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:10:40,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:10:40,522 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:10:40,522 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:10:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-19 22:10:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 22:10:40,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:10:40,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:10:40,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:10:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:10:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-10-19 22:10:40,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:10:40,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109655173] [2020-10-19 22:10:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:10:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:10:40,728 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 22:10:40,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109655173] [2020-10-19 22:10:40,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:10:40,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:10:40,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358305009] [2020-10-19 22:10:40,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:10:40,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:10:40,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:10:40,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:10:40,759 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-19 22:10:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:10:40,779 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-19 22:10:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:10:40,781 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-19 22:10:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:10:40,807 INFO L225 Difference]: With dead ends: 37 [2020-10-19 22:10:40,807 INFO L226 Difference]: Without dead ends: 16 [2020-10-19 22:10:40,811 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 22:10:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-19 22:10:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-19 22:10:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-19 22:10:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-10-19 22:10:40,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-10-19 22:10:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:10:40,855 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-10-19 22:10:40,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:10:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-10-19 22:10:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 22:10:40,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:10:40,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:10:40,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:10:40,859 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:10:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:10:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-10-19 22:10:40,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:10:40,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116368972] [2020-10-19 22:10:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:10:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:10:41,008 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 22:10:41,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116368972] [2020-10-19 22:10:41,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:10:41,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:10:41,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556471913] [2020-10-19 22:10:41,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:10:41,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:10:41,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:10:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:10:41,013 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-10-19 22:10:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:10:41,078 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-10-19 22:10:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:10:41,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 22:10:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:10:41,080 INFO L225 Difference]: With dead ends: 33 [2020-10-19 22:10:41,080 INFO L226 Difference]: Without dead ends: 22 [2020-10-19 22:10:41,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 22:10:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-19 22:10:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-10-19 22:10:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 22:10:41,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-19 22:10:41,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-10-19 22:10:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:10:41,088 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-19 22:10:41,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:10:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-19 22:10:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:10:41,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:10:41,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:10:41,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:10:41,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:10:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:10:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-10-19 22:10:41,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:10:41,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754634498] [2020-10-19 22:10:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:10:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:10:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:10:41,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754634498] [2020-10-19 22:10:41,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:10:41,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:10:41,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675668371] [2020-10-19 22:10:41,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:10:41,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:10:41,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:10:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:10:41,198 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-19 22:10:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:10:41,274 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-19 22:10:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:10:41,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-19 22:10:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:10:41,277 INFO L225 Difference]: With dead ends: 27 [2020-10-19 22:10:41,277 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 22:10:41,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:10:41,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 22:10:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-19 22:10:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 22:10:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-19 22:10:41,286 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-10-19 22:10:41,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:10:41,288 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-19 22:10:41,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:10:41,288 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-19 22:10:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:10:41,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:10:41,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:10:41,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:10:41,300 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:10:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:10:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-10-19 22:10:41,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:10:41,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590406409] [2020-10-19 22:10:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:10:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:10:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:10:41,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590406409] [2020-10-19 22:10:41,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106161672] [2020-10-19 22:10:41,401 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 22:10:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:10:41,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:10:41,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:10:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:10:41,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:10:41,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-10-19 22:10:41,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430193901] [2020-10-19 22:10:41,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:10:41,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:10:41,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:10:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:10:41,575 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-10-19 22:10:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:10:41,707 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-10-19 22:10:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:10:41,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-19 22:10:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:10:41,709 INFO L225 Difference]: With dead ends: 43 [2020-10-19 22:10:41,709 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 22:10:41,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:10:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 22:10:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-19 22:10:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 22:10:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-19 22:10:41,715 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-10-19 22:10:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:10:41,716 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-19 22:10:41,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:10:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-19 22:10:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:10:41,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:10:41,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:10:41,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:10:41,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:10:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:10:41,932 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-10-19 22:10:41,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:10:41,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576456741] [2020-10-19 22:10:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:10:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:10:41,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:10:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:10:42,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:10:42,027 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:10:42,027 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:10:42,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:10:42,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:10:42 BoogieIcfgContainer [2020-10-19 22:10:42,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:10:42,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:10:42,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:10:42,073 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:10:42,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:10:40" (3/4) ... [2020-10-19 22:10:42,076 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:10:42,150 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:10:42,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:10:42,153 INFO L168 Benchmark]: Toolchain (without parser) took 2412.86 ms. Allocated memory was 34.6 MB in the beginning and 49.3 MB in the end (delta: 14.7 MB). Free memory was 11.6 MB in the beginning and 13.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,154 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 60.6 kB). Peak memory consumption was 60.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.47 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 10.7 MB in the beginning and 22.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.57 ms. Allocated memory is still 43.5 MB. Free memory was 22.2 MB in the beginning and 20.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,156 INFO L168 Benchmark]: Boogie Preprocessor took 26.45 ms. Allocated memory is still 43.5 MB. Free memory was 20.4 MB in the beginning and 19.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,157 INFO L168 Benchmark]: RCFGBuilder took 311.46 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 18.8 MB in the beginning and 13.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,158 INFO L168 Benchmark]: TraceAbstraction took 1642.77 ms. Allocated memory was 44.6 MB in the beginning and 49.3 MB in the end (delta: 4.7 MB). Free memory was 12.8 MB in the beginning and 16.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 911.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,159 INFO L168 Benchmark]: Witness Printer took 78.21 ms. Allocated memory is still 49.3 MB. Free memory was 16.6 MB in the beginning and 13.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:10:42,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 60.6 kB). Peak memory consumption was 60.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 308.47 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 10.7 MB in the beginning and 22.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.57 ms. Allocated memory is still 43.5 MB. Free memory was 22.2 MB in the beginning and 20.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.45 ms. Allocated memory is still 43.5 MB. Free memory was 20.4 MB in the beginning and 19.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 311.46 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 18.8 MB in the beginning and 13.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1642.77 ms. Allocated memory was 44.6 MB in the beginning and 49.3 MB in the end (delta: 4.7 MB). Free memory was 12.8 MB in the beginning and 16.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 911.6 kB. Max. memory is 14.3 GB. * Witness Printer took 78.21 ms. Allocated memory is still 49.3 MB. Free memory was 16.6 MB in the beginning and 13.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=2] [L31] COND TRUE i