./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/nsqmf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/array-fpi/nsqmf.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 84af1a44340d97934a061498051a9028cf73e371 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 17:11:49,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 17:11:49,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 17:11:49,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 17:11:49,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 17:11:49,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 17:11:49,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 17:11:49,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 17:11:49,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 17:11:49,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 17:11:49,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 17:11:49,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 17:11:49,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 17:11:49,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 17:11:49,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 17:11:49,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 17:11:49,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 17:11:49,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 17:11:49,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 17:11:49,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 17:11:49,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 17:11:49,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 17:11:49,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 17:11:49,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 17:11:49,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 17:11:49,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 17:11:49,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 17:11:49,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 17:11:49,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 17:11:49,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 17:11:49,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 17:11:49,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 17:11:49,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 17:11:49,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 17:11:49,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 17:11:49,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 17:11:49,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 17:11:49,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 17:11:49,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 17:11:49,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 17:11:49,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 17:11:49,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 17:11:49,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 17:11:49,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 17:11:49,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 17:11:49,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 17:11:49,437 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 17:11:49,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 17:11:49,437 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 17:11:49,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 17:11:49,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 17:11:49,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 17:11:49,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 17:11:49,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 17:11:49,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 17:11:49,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 17:11:49,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 17:11:49,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 17:11:49,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 17:11:49,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 17:11:49,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 17:11:49,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 17:11:49,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 17:11:49,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 17:11:49,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 17:11:49,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 17:11:49,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 17:11:49,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 17:11:49,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 17:11:49,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 17:11:49,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84af1a44340d97934a061498051a9028cf73e371 [2021-07-04 17:11:49,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 17:11:49,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 17:11:49,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 17:11:49,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 17:11:49,668 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 17:11:49,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/nsqmf.c [2021-07-04 17:11:49,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1fad45a/32d89696651d40f6bd8bf0b07c41962b/FLAGfd69067e3 [2021-07-04 17:11:50,033 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 17:11:50,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqmf.c [2021-07-04 17:11:50,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1fad45a/32d89696651d40f6bd8bf0b07c41962b/FLAGfd69067e3 [2021-07-04 17:11:50,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1fad45a/32d89696651d40f6bd8bf0b07c41962b [2021-07-04 17:11:50,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 17:11:50,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 17:11:50,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 17:11:50,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 17:11:50,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 17:11:50,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679e78ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50, skipping insertion in model container [2021-07-04 17:11:50,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 17:11:50,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 17:11:50,560 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2021-07-04 17:11:50,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 17:11:50,575 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 17:11:50,582 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2021-07-04 17:11:50,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 17:11:50,594 INFO L208 MainTranslator]: Completed translation [2021-07-04 17:11:50,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50 WrapperNode [2021-07-04 17:11:50,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 17:11:50,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 17:11:50,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 17:11:50,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 17:11:50,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 17:11:50,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 17:11:50,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 17:11:50,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 17:11:50,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 17:11:50,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 17:11:50,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 17:11:50,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 17:11:50,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (1/1) ... [2021-07-04 17:11:50,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 17:11:50,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 17:11:50,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-04 17:11:50,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-04 17:11:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 17:11:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 17:11:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-04 17:11:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-04 17:11:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 17:11:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 17:11:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-04 17:11:50,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 17:11:50,922 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-07-04 17:11:50,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 05:11:50 BoogieIcfgContainer [2021-07-04 17:11:50,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 17:11:50,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 17:11:50,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 17:11:50,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 17:11:50,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 05:11:50" (1/3) ... [2021-07-04 17:11:50,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235740e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 05:11:50, skipping insertion in model container [2021-07-04 17:11:50,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:11:50" (2/3) ... [2021-07-04 17:11:50,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235740e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 05:11:50, skipping insertion in model container [2021-07-04 17:11:50,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 05:11:50" (3/3) ... [2021-07-04 17:11:50,928 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2021-07-04 17:11:50,932 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 17:11:50,943 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 17:11:50,994 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 17:11:51,001 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 17:11:51,001 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 17:11:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:11:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-04 17:11:51,029 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 17:11:51,029 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 17:11:51,029 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 17:11:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 17:11:51,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-07-04 17:11:51,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 17:11:51,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237392877] [2021-07-04 17:11:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 17:11:51,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 17:11:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 17:11:51,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:11:51,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 17:11:51,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:11:51,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 17:11:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 17:11:51,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 17:11:51,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237392877] [2021-07-04 17:11:51,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237392877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 17:11:51,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 17:11:51,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-04 17:11:51,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190450949] [2021-07-04 17:11:51,190 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-04 17:11:51,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 17:11:51,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-04 17:11:51,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 17:11:51,203 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:11:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 17:11:51,218 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-07-04 17:11:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-04 17:11:51,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-07-04 17:11:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 17:11:51,224 INFO L225 Difference]: With dead ends: 38 [2021-07-04 17:11:51,224 INFO L226 Difference]: Without dead ends: 17 [2021-07-04 17:11:51,226 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 17:11:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-07-04 17:11:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-07-04 17:11:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:11:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-07-04 17:11:51,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-07-04 17:11:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 17:11:51,247 INFO L442 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-07-04 17:11:51,247 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:11:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-07-04 17:11:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-04 17:11:51,247 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 17:11:51,248 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 17:11:51,248 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 17:11:51,248 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 17:11:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 17:11:51,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-07-04 17:11:51,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 17:11:51,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62488698] [2021-07-04 17:11:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 17:11:51,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 17:11:51,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-07-04 17:11:51,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321636545] [2021-07-04 17:11:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 17:11:51,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-04 17:11:51,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 17:11:51,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-04 17:11:51,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-04 17:11:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 17:11:51,393 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 17:11:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 17:11:51,408 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 17:11:51,433 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 17:11:51,434 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 17:11:51,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-04 17:11:51,652 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-04 17:11:51,653 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 17:11:51,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 05:11:51 BoogieIcfgContainer [2021-07-04 17:11:51,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 17:11:51,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 17:11:51,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 17:11:51,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 17:11:51,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 05:11:50" (3/4) ... [2021-07-04 17:11:51,676 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 17:11:51,707 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 17:11:51,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 17:11:51,709 INFO L168 Benchmark]: Toolchain (without parser) took 1247.70 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 39.8 MB in the beginning and 62.4 MB in the end (delta: -22.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-07-04 17:11:51,709 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 17:11:51,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.32 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 29.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-04 17:11:51,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 42.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-07-04 17:11:51,711 INFO L168 Benchmark]: Boogie Preprocessor took 13.96 ms. Allocated memory is still 58.7 MB. Free memory was 42.4 MB in the beginning and 41.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 17:11:51,711 INFO L168 Benchmark]: RCFGBuilder took 261.86 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 26.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-07-04 17:11:51,711 INFO L168 Benchmark]: TraceAbstraction took 750.62 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 25.9 MB in the beginning and 33.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-07-04 17:11:51,712 INFO L168 Benchmark]: Witness Printer took 33.02 ms. Allocated memory is still 81.8 MB. Free memory was 33.9 MB in the beginning and 62.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-07-04 17:11:51,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 130.32 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 29.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 42.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.96 ms. Allocated memory is still 58.7 MB. Free memory was 42.4 MB in the beginning and 41.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 261.86 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 26.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 750.62 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 25.9 MB in the beginning and 33.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Witness Printer took 33.02 ms. Allocated memory is still 81.8 MB. Free memory was 33.9 MB in the beginning and 62.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_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=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 1 [L32] a[0] = 1 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i