./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss1f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ss1f.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 738f92d53407194cd8d2cf30d6b3861192fe553b .......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:33:12,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:33:12,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:33:12,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:33:12,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:33:12,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:33:12,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:33:12,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:33:12,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:33:12,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:33:12,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:33:12,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:33:12,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:33:12,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:33:12,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:33:12,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:33:12,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:33:12,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:33:12,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:33:12,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:33:12,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:33:12,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:33:12,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:33:12,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:33:12,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:33:12,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:33:12,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:33:12,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:33:12,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:33:12,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:33:12,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:33:12,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:33:12,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:33:12,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:33:12,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:33:12,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:33:12,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:33:12,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:33:12,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:33:12,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:33:12,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:33:12,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:33:12,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:33:12,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:33:12,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:33:12,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:33:12,505 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:33:12,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:33:12,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:33:12,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:33:12,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:33:12,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:33:12,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:33:12,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:33:12,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:33:12,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:33:12,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:33:12,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:33:12,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:33:12,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:33:12,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:33:12,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:33:12,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:33:12,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:33:12,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:33:12,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:33:12,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:33:12,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:33:12,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:33:12,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:33:12,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:33:12,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 738f92d53407194cd8d2cf30d6b3861192fe553b [2020-10-25 19:33:12,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:33:13,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:33:13,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:33:13,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:33:13,042 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:33:13,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss1f.c [2020-10-25 19:33:13,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051accb97/75da4289e16948d48c6b45add9cf4391/FLAG16b7a968d [2020-10-25 19:33:13,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:33:13,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1f.c [2020-10-25 19:33:13,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051accb97/75da4289e16948d48c6b45add9cf4391/FLAG16b7a968d [2020-10-25 19:33:14,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051accb97/75da4289e16948d48c6b45add9cf4391 [2020-10-25 19:33:14,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:33:14,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:33:14,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:33:14,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:33:14,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:33:14,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdfccd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14, skipping insertion in model container [2020-10-25 19:33:14,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:33:14,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:33:14,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:33:14,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:33:14,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:33:14,538 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:33:14,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14 WrapperNode [2020-10-25 19:33:14,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:33:14,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:33:14,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:33:14,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:33:14,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:33:14,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:33:14,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:33:14,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:33:14,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... [2020-10-25 19:33:14,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:33:14,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:33:14,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:33:14,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:33:14,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:33:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:33:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:33:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:33:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 19:33:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:33:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:33:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:33:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 19:33:15,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:33:15,178 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-25 19:33:15,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:33:15 BoogieIcfgContainer [2020-10-25 19:33:15,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:33:15,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:33:15,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:33:15,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:33:15,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:33:14" (1/3) ... [2020-10-25 19:33:15,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c0c145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:33:15, skipping insertion in model container [2020-10-25 19:33:15,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:14" (2/3) ... [2020-10-25 19:33:15,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c0c145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:33:15, skipping insertion in model container [2020-10-25 19:33:15,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:33:15" (3/3) ... [2020-10-25 19:33:15,203 INFO L111 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-10-25 19:33:15,227 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:33:15,232 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:33:15,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:33:15,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:33:15,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:33:15,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:33:15,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:33:15,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:33:15,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:33:15,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:33:15,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:33:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-25 19:33:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:33:15,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:33:15,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:33:15,304 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:33:15,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:33:15,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2020-10-25 19:33:15,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:33:15,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606196808] [2020-10-25 19:33:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:33:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:33:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:33:15,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606196808] [2020-10-25 19:33:15,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:33:15,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:33:15,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290391463] [2020-10-25 19:33:15,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:33:15,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:33:15,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:33:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:33:15,591 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-25 19:33:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:33:15,615 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-10-25 19:33:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:33:15,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-25 19:33:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:33:15,628 INFO L225 Difference]: With dead ends: 45 [2020-10-25 19:33:15,629 INFO L226 Difference]: Without dead ends: 20 [2020-10-25 19:33:15,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:33:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-25 19:33:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-25 19:33:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 19:33:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-25 19:33:15,680 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2020-10-25 19:33:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:33:15,680 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-25 19:33:15,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:33:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-25 19:33:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:33:15,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:33:15,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:33:15,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:33:15,683 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:33:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:33:15,684 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2020-10-25 19:33:15,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:33:15,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611294931] [2020-10-25 19:33:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:33:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:33:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:33:15,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611294931] [2020-10-25 19:33:15,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:33:15,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:33:15,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851459687] [2020-10-25 19:33:15,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:33:15,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:33:15,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:33:15,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:33:15,796 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-10-25 19:33:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:33:15,971 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-10-25 19:33:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:33:15,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-25 19:33:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:33:15,973 INFO L225 Difference]: With dead ends: 41 [2020-10-25 19:33:15,973 INFO L226 Difference]: Without dead ends: 28 [2020-10-25 19:33:15,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:33:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-25 19:33:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-25 19:33:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-25 19:33:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-25 19:33:15,982 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-10-25 19:33:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:33:15,983 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-25 19:33:15,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:33:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-25 19:33:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:33:15,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:33:15,985 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, 1, 1, 1] [2020-10-25 19:33:15,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:33:15,985 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:33:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:33:15,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2020-10-25 19:33:15,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:33:15,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642463645] [2020-10-25 19:33:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:33:16,021 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:33:16,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945076246] [2020-10-25 19:33:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:33:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:33:16,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:33:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:33:16,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:33:16,218 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:33:16,218 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:33:16,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 19:33:16,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:33:16 BoogieIcfgContainer [2020-10-25 19:33:16,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:33:16,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:33:16,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:33:16,511 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:33:16,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:33:15" (3/4) ... [2020-10-25 19:33:16,514 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:33:16,605 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:33:16,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:33:16,608 INFO L168 Benchmark]: Toolchain (without parser) took 2465.54 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 33.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,608 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:33:16,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.51 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 31.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.90 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 29.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,610 INFO L168 Benchmark]: Boogie Preprocessor took 37.96 ms. Allocated memory is still 50.3 MB. Free memory was 29.8 MB in the beginning and 28.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,611 INFO L168 Benchmark]: RCFGBuilder took 547.10 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 34.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,612 INFO L168 Benchmark]: TraceAbstraction took 1326.64 ms. Allocated memory is still 60.8 MB. Free memory was 34.3 MB in the beginning and 36.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,613 INFO L168 Benchmark]: Witness Printer took 94.82 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 33.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:16,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.51 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 31.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.90 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 29.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.96 ms. Allocated memory is still 50.3 MB. Free memory was 29.8 MB in the beginning and 28.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.10 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 34.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1326.64 ms. Allocated memory is still 60.8 MB. Free memory was 34.3 MB in the beginning and 36.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Witness Printer took 94.82 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 33.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i