./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/terminator_01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/terminator_01.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 5a96d8f7116f07c51cbc3e08fb353595839e97bf .............................................................................................................................................................................................................................................................................. 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 0.2.0-5485861 [2020-10-25 22:17:36,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:17:36,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:17:36,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:17:36,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:17:36,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:17:36,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:17:36,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:17:36,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:17:36,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:17:36,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:17:36,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:17:36,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:17:36,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:17:36,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:17:36,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:17:36,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:17:36,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:17:36,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:17:36,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:17:36,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:17:36,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:17:36,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:17:36,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:17:36,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:17:36,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:17:36,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:17:36,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:17:36,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:17:36,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:17:36,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:17:36,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:17:36,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:17:36,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:17:36,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:17:36,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:17:36,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:17:36,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:17:36,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:17:36,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:17:36,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:17:36,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:17:36,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:17:36,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:17:36,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:17:36,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:17:36,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:17:36,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:17:36,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:17:36,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:17:36,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:17:36,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:17:36,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:17:36,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:17:36,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:17:36,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:17:36,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:17:36,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:17:36,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:17:36,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:17:36,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:17:36,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:17:36,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:17:36,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:17:36,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:17:36,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:17:36,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:17:36,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:17:36,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:17:36,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:17:36,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:17:36,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a96d8f7116f07c51cbc3e08fb353595839e97bf [2020-10-25 22:17:37,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:17:37,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:17:37,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:17:37,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:17:37,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:17:37,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_01.c [2020-10-25 22:17:37,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4e3e31c/4a657079c29f45449c4cd7eb7fa09439/FLAG2b709cd7f [2020-10-25 22:17:37,702 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:17:37,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_01.c [2020-10-25 22:17:37,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4e3e31c/4a657079c29f45449c4cd7eb7fa09439/FLAG2b709cd7f [2020-10-25 22:17:38,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4e3e31c/4a657079c29f45449c4cd7eb7fa09439 [2020-10-25 22:17:38,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:17:38,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:17:38,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:38,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:17:38,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:17:38,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a955ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38, skipping insertion in model container [2020-10-25 22:17:38,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:17:38,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:17:38,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:38,376 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:17:38,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:38,412 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:17:38,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38 WrapperNode [2020-10-25 22:17:38,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:38,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:38,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:17:38,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:17:38,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:38,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:17:38,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:17:38,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:17:38,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (1/1) ... [2020-10-25 22:17:38,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:17:38,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:17:38,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:17:38,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:17:38,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (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 [2020-10-25 22:17:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:17:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:17:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:17:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:17:38,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:17:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:17:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:17:38,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:17:38,794 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:17:38,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:38 BoogieIcfgContainer [2020-10-25 22:17:38,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:17:38,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:17:38,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:17:38,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:17:38,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:17:38" (1/3) ... [2020-10-25 22:17:38,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1dbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:38, skipping insertion in model container [2020-10-25 22:17:38,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:38" (2/3) ... [2020-10-25 22:17:38,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1dbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:38, skipping insertion in model container [2020-10-25 22:17:38,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:38" (3/3) ... [2020-10-25 22:17:38,806 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-10-25 22:17:38,819 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:17:38,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:17:38,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:17:38,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:17:38,904 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:17:38,904 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:17:38,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:17:38,919 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:17:38,919 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:17:38,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:17:38,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:17:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-25 22:17:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:17:38,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:38,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:17:38,951 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:38,957 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2020-10-25 22:17:38,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:38,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930254879] [2020-10-25 22:17:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:39,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930254879] [2020-10-25 22:17:39,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:39,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:17:39,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498829647] [2020-10-25 22:17:39,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:17:39,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:17:39,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:17:39,198 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-25 22:17:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:39,217 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-25 22:17:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:17:39,219 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-25 22:17:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:39,230 INFO L225 Difference]: With dead ends: 21 [2020-10-25 22:17:39,230 INFO L226 Difference]: Without dead ends: 8 [2020-10-25 22:17:39,245 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 [2020-10-25 22:17:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-25 22:17:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-25 22:17:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-25 22:17:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-25 22:17:39,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-25 22:17:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:39,300 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-25 22:17:39,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:17:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-25 22:17:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:17:39,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:39,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:39,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:17:39,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:39,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1806847180, now seen corresponding path program 1 times [2020-10-25 22:17:39,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:39,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636454945] [2020-10-25 22:17:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:17:39,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:17:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:17:39,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:17:39,472 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:17:39,473 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:17:39,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:17:39,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:17:39 BoogieIcfgContainer [2020-10-25 22:17:39,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:17:39,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:17:39,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:17:39,504 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:17:39,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:38" (3/4) ... [2020-10-25 22:17:39,508 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:17:39,557 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:17:39,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:17:39,561 INFO L168 Benchmark]: Toolchain (without parser) took 1441.47 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.0 MB in the beginning and 23.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:39,562 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 39.8 MB. Free memory was 25.1 MB in the beginning and 25.1 MB in the end (delta: 20.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:39,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.59 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 23.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:39,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.67 ms. Allocated memory is still 48.2 MB. Free memory was 23.9 MB in the beginning and 22.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:39,565 INFO L168 Benchmark]: Boogie Preprocessor took 24.37 ms. Allocated memory is still 48.2 MB. Free memory was 22.4 MB in the beginning and 21.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:39,566 INFO L168 Benchmark]: RCFGBuilder took 318.17 ms. Allocated memory is still 48.2 MB. Free memory was 21.4 MB in the beginning and 21.8 MB in the end (delta: -398.2 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:39,567 INFO L168 Benchmark]: TraceAbstraction took 705.24 ms. Allocated memory is still 48.2 MB. Free memory was 21.4 MB in the beginning and 25.5 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:39,568 INFO L168 Benchmark]: Witness Printer took 53.95 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 23.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:39,573 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 39.8 MB. Free memory was 25.1 MB in the beginning and 25.1 MB in the end (delta: 20.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.59 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 23.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.67 ms. Allocated memory is still 48.2 MB. Free memory was 23.9 MB in the beginning and 22.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.37 ms. Allocated memory is still 48.2 MB. Free memory was 22.4 MB in the beginning and 21.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 318.17 ms. Allocated memory is still 48.2 MB. Free memory was 21.4 MB in the beginning and 21.8 MB in the end (delta: -398.2 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 705.24 ms. Allocated memory is still 48.2 MB. Free memory was 21.4 MB in the beginning and 25.5 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.95 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 23.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L15] int x=__VERIFIER_nondet_int(); [L16] int *p = &x; [L18] EXPR \read(x) [L18] COND FALSE !(x<100) [L6] COND TRUE !(cond) [L3] __assert_fail("0", "terminator_01.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...