./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/indp2f.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/indp2f.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28e1ba1bc2809db1a212018586e2acf171b8b758 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-8bd4bc6 [2020-07-28 14:51:48,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:51:48,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:51:48,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:51:48,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:51:48,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:51:48,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:51:48,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:51:48,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:51:48,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:51:48,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:51:48,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:51:48,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:51:48,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:51:48,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:51:48,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:51:48,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:51:48,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:51:48,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:51:48,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:51:48,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:51:48,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:51:48,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:51:48,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:51:48,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:51:48,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:51:48,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:51:48,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:51:48,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:51:48,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:51:48,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:51:48,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:51:48,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:51:48,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:51:48,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:51:48,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:51:48,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:51:48,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:51:48,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:51:48,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:51:48,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:51:48,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:51:48,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:51:48,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:51:48,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:51:48,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:51:48,479 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:51:48,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:51:48,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:51:48,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:51:48,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:51:48,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:51:48,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:51:48,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:51:48,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:51:48,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:51:48,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:51:48,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:51:48,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:51:48,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:51:48,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:51:48,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:51:48,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:51:48,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:51:48,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:51:48,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:51:48,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:51:48,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:51:48,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:51:48,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:51:48,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:51:48,485 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(__VERIFIER_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 -> 28e1ba1bc2809db1a212018586e2acf171b8b758 [2020-07-28 14:51:48,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:51:48,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:51:48,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:51:48,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:51:48,791 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:51:48,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp2f.c [2020-07-28 14:51:48,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2630dd9f2/e5fd136d5a4e4913aaf13d126898ec9b/FLAG00c55be5a [2020-07-28 14:51:49,309 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:51:49,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/indp2f.c [2020-07-28 14:51:49,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2630dd9f2/e5fd136d5a4e4913aaf13d126898ec9b/FLAG00c55be5a [2020-07-28 14:51:49,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2630dd9f2/e5fd136d5a4e4913aaf13d126898ec9b [2020-07-28 14:51:49,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:51:49,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:51:49,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:51:49,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:51:49,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:51:49,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:49,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26af0012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49, skipping insertion in model container [2020-07-28 14:51:49,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:49,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:51:49,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:51:49,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:51:49,925 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:51:49,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:51:49,967 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:51:49,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49 WrapperNode [2020-07-28 14:51:49,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:51:49,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:51:49,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:51:49,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:51:49,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:49,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:51:50,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:51:50,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:51:50,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:51:50,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (1/1) ... [2020-07-28 14:51:50,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:51:50,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:51:50,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:51:50,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:51:50,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (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 [2020-07-28 14:51:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:51:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:51:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:51:50,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:51:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:51:50,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:51:50,538 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 14:51:50,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:50 BoogieIcfgContainer [2020-07-28 14:51:50,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:51:50,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:51:50,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:51:50,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:51:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:51:49" (1/3) ... [2020-07-28 14:51:50,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8c15fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:50, skipping insertion in model container [2020-07-28 14:51:50,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:49" (2/3) ... [2020-07-28 14:51:50,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8c15fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:50, skipping insertion in model container [2020-07-28 14:51:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:50" (3/3) ... [2020-07-28 14:51:50,551 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-07-28 14:51:50,562 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:51:50,569 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:51:50,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:51:50,600 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:51:50,601 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:51:50,601 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:51:50,601 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:51:50,601 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:51:50,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:51:50,602 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:51:50,602 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:51:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-28 14:51:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-28 14:51:50,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:50,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:50,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:50,629 INFO L82 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2020-07-28 14:51:50,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:50,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381229647] [2020-07-28 14:51:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:50,810 INFO L280 TraceCheckUtils]: 0: Hoare triple {27#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {27#true} is VALID [2020-07-28 14:51:50,811 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~post5, main_#t~mem8, main_#t~post7, main_~i~0, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {27#true} is VALID [2020-07-28 14:51:50,812 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {27#true} is VALID [2020-07-28 14:51:50,813 INFO L280 TraceCheckUtils]: 3: Hoare triple {27#true} assume 0 == assume_abort_if_not_~cond;assume false; {28#false} is VALID [2020-07-28 14:51:50,814 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#false} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:50,814 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:51:50,815 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:50,815 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:51:50,815 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:50,816 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:51:50,816 INFO L280 TraceCheckUtils]: 10: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:50,816 INFO L280 TraceCheckUtils]: 11: Hoare triple {28#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if 0 == main_#t~mem8 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {28#false} is VALID [2020-07-28 14:51:50,817 INFO L280 TraceCheckUtils]: 12: Hoare triple {28#false} assume 0 == __VERIFIER_assert_~cond; {28#false} is VALID [2020-07-28 14:51:50,817 INFO L280 TraceCheckUtils]: 13: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-28 14:51:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:51:50,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381229647] [2020-07-28 14:51:50,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:51:50,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147812654] [2020-07-28 14:51:50,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-28 14:51:50,832 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:50,836 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:51:50,884 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:50,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:51:50,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:50,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:51:50,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:51:50,894 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-28 14:51:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:50,958 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-07-28 14:51:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:51:50,958 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-28 14:51:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:51:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:51:50,976 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 62 transitions. [2020-07-28 14:51:51,070 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:51,081 INFO L225 Difference]: With dead ends: 44 [2020-07-28 14:51:51,082 INFO L226 Difference]: Without dead ends: 20 [2020-07-28 14:51:51,085 INFO L675 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 [2020-07-28 14:51:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-28 14:51:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-28 14:51:51,121 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:51,122 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:51,123 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:51,123 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:51,126 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:51:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:51:51,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:51,127 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:51,127 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:51,127 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:51,129 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:51:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:51:51,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:51,130 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:51,130 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:51,131 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 14:51:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-07-28 14:51:51,135 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-07-28 14:51:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:51,135 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-07-28 14:51:51,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:51:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:51:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-28 14:51:51,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:51,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:51,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:51:51,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:51,138 INFO L82 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2020-07-28 14:51:51,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:51,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567862106] [2020-07-28 14:51:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:51,233 INFO L280 TraceCheckUtils]: 0: Hoare triple {149#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {149#true} is VALID [2020-07-28 14:51:51,233 INFO L280 TraceCheckUtils]: 1: Hoare triple {149#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~post5, main_#t~mem8, main_#t~post7, main_~i~0, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {149#true} is VALID [2020-07-28 14:51:51,234 INFO L280 TraceCheckUtils]: 2: Hoare triple {149#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:51,235 INFO L280 TraceCheckUtils]: 3: Hoare triple {151#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:51,237 INFO L280 TraceCheckUtils]: 4: Hoare triple {151#(<= 1 ~N~0)} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;main_~i~0 := 0; {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:51:51,238 INFO L280 TraceCheckUtils]: 5: Hoare triple {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:51:51,239 INFO L280 TraceCheckUtils]: 6: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:51:51,239 INFO L280 TraceCheckUtils]: 7: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:51:51,240 INFO L280 TraceCheckUtils]: 8: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:51:51,240 INFO L280 TraceCheckUtils]: 9: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:51:51,240 INFO L280 TraceCheckUtils]: 10: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:51:51,241 INFO L280 TraceCheckUtils]: 11: Hoare triple {150#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if 0 == main_#t~mem8 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {150#false} is VALID [2020-07-28 14:51:51,241 INFO L280 TraceCheckUtils]: 12: Hoare triple {150#false} assume 0 == __VERIFIER_assert_~cond; {150#false} is VALID [2020-07-28 14:51:51,241 INFO L280 TraceCheckUtils]: 13: Hoare triple {150#false} assume !false; {150#false} is VALID [2020-07-28 14:51:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:51:51,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567862106] [2020-07-28 14:51:51,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:51,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:51:51,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754631499] [2020-07-28 14:51:51,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-28 14:51:51,246 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:51,247 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:51:51,268 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:51,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:51:51,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:51:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:51:51,269 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-07-28 14:51:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:51,446 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-07-28 14:51:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:51:51,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-28 14:51:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:51:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2020-07-28 14:51:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:51:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2020-07-28 14:51:51,453 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 53 transitions. [2020-07-28 14:51:51,540 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:51,542 INFO L225 Difference]: With dead ends: 45 [2020-07-28 14:51:51,542 INFO L226 Difference]: Without dead ends: 32 [2020-07-28 14:51:51,543 INFO L675 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 [2020-07-28 14:51:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-28 14:51:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-07-28 14:51:51,571 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:51,571 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 23 states. [2020-07-28 14:51:51,571 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 23 states. [2020-07-28 14:51:51,572 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 23 states. [2020-07-28 14:51:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:51,574 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-28 14:51:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-28 14:51:51,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:51,575 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:51,576 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 32 states. [2020-07-28 14:51:51,576 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 32 states. [2020-07-28 14:51:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:51,579 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-28 14:51:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-28 14:51:51,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:51,580 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:51,580 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:51,580 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 14:51:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-07-28 14:51:51,583 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-07-28 14:51:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:51,583 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-07-28 14:51:51,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:51:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-07-28 14:51:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-28 14:51:51,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:51,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:51,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:51:51,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:51,586 INFO L82 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2020-07-28 14:51:51,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:51,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038366887] [2020-07-28 14:51:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:51,602 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:51:51,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112320558] [2020-07-28 14:51:51,603 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 [2020-07-28 14:51:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:51:51,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:51:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:51:51,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:51:51,736 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:51:51,737 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:51:51,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:51:52,000 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:51:52,001 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:51:52,001 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:51:52,001 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:51:52,001 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 14:51:52,001 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:51:52,002 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:51:52,002 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:51:52,003 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:51:52,003 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:51:52,003 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:51:52,003 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:51:52,003 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2020-07-28 14:51:52,004 WARN L170 areAnnotationChecker]: L28-2 has no Hoare annotation [2020-07-28 14:51:52,004 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:51:52,004 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:51:52,004 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:51:52,004 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2020-07-28 14:51:52,005 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-28 14:51:52,005 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:52,005 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:52,005 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:52,006 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-28 14:51:52,006 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 14:51:52,006 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:51:52,006 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:51:52,007 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:51:52,007 WARN L170 areAnnotationChecker]: L43-4 has no Hoare annotation [2020-07-28 14:51:52,007 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:51:52,007 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:51:52,008 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:51:52,009 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:51:52,009 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:51:52,010 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2020-07-28 14:51:52,010 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 14:51:52,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:51:52 BoogieIcfgContainer [2020-07-28 14:51:52,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:51:52,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:51:52,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:51:52,015 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:51:52,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:50" (3/4) ... [2020-07-28 14:51:52,023 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:51:52,109 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:51:52,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:51:52,113 INFO L168 Benchmark]: Toolchain (without parser) took 2485.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 954.8 MB in the beginning and 984.0 MB in the end (delta: -29.2 MB). Peak memory consumption was 104.0 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:52,114 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:51:52,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:52,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:52,116 INFO L168 Benchmark]: Boogie Preprocessor took 36.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:51:52,117 INFO L168 Benchmark]: RCFGBuilder took 425.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:52,117 INFO L168 Benchmark]: TraceAbstraction took 1471.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.7 MB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:52,118 INFO L168 Benchmark]: Witness Printer took 95.07 ms. Allocated memory is still 1.2 GB. Free memory was 990.7 MB in the beginning and 984.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:52,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 110.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 425.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1471.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.7 MB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. * Witness Printer took 95.07 ms. Allocated memory is still 1.2 GB. Free memory was 990.7 MB in the beginning and 984.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L28] i=0 VAL [N=1] [L28] COND TRUE i