./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss3f.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/ss3f.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 248b2d90a91115122eed8c2bc3ad2e8879fe9067 ................................................................................................................................................................................................................................................................................................................................................................................... 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 19:33:21,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:33:21,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:33:21,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:33:21,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:33:21,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:33:21,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:33:21,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:33:21,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:33:21,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:33:21,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:33:21,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:33:21,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:33:21,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:33:21,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:33:21,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:33:21,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:33:21,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:33:21,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:33:21,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:33:21,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:33:21,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:33:21,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:33:21,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:33:21,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:33:21,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:33:21,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:33:21,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:33:21,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:33:21,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:33:21,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:33:21,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:33:21,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:33:21,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:33:21,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:33:21,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:33:21,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:33:21,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:33:21,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:33:21,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:33:21,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:33:21,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:33:21,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:33:21,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:33:21,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:33:21,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:33:21,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:33:21,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:33:21,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:33:21,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:33:21,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:33:21,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:33:21,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:33:21,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:33:21,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:33:21,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:33:21,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:33:21,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:33:21,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:33:21,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:33:21,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:33:21,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:33:21,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:33:21,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:33:21,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:33:21,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:33:21,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:33:21,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:33:21,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:33:21,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:33:21,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:33:21,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 248b2d90a91115122eed8c2bc3ad2e8879fe9067 [2020-10-25 19:33:22,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:33:22,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:33:22,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:33:22,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:33:22,081 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:33:22,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss3f.c [2020-10-25 19:33:22,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d906778a3/20718a5efe2c4859b1161fd69b3b9945/FLAGf86c61207 [2020-10-25 19:33:22,710 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:33:22,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss3f.c [2020-10-25 19:33:22,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d906778a3/20718a5efe2c4859b1161fd69b3b9945/FLAGf86c61207 [2020-10-25 19:33:23,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d906778a3/20718a5efe2c4859b1161fd69b3b9945 [2020-10-25 19:33:23,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:33:23,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:33:23,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:33:23,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:33:23,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:33:23,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c935c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23, skipping insertion in model container [2020-10-25 19:33:23,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:33:23,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:33:23,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:33:23,322 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:33:23,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:33:23,366 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:33:23,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23 WrapperNode [2020-10-25 19:33:23,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:33:23,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:33:23,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:33:23,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:33:23,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:33:23,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:33:23,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:33:23,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:33:23,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (1/1) ... [2020-10-25 19:33:23,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:33:23,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:33:23,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:33:23,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:33:23,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (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 19:33:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:33:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:33:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:33:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 19:33:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:33:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:33:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:33:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 19:33:24,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:33:24,193 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-25 19:33:24,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:33:24 BoogieIcfgContainer [2020-10-25 19:33:24,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:33:24,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:33:24,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:33:24,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:33:24,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:33:23" (1/3) ... [2020-10-25 19:33:24,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5072b646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:33:24, skipping insertion in model container [2020-10-25 19:33:24,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:33:23" (2/3) ... [2020-10-25 19:33:24,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5072b646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:33:24, skipping insertion in model container [2020-10-25 19:33:24,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:33:24" (3/3) ... [2020-10-25 19:33:24,209 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-10-25 19:33:24,222 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:33:24,228 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:33:24,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:33:24,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:33:24,277 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:33:24,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:33:24,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:33:24,277 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:33:24,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:33:24,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:33:24,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:33:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-25 19:33:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:33:24,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:33:24,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:33:24,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:33:24,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:33:24,307 INFO L82 PathProgramCache]: Analyzing trace with hash 118053350, now seen corresponding path program 1 times [2020-10-25 19:33:24,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:33:24,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488478239] [2020-10-25 19:33:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:33:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:33:24,481 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 19:33:24,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488478239] [2020-10-25 19:33:24,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:33:24,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:33:24,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143057822] [2020-10-25 19:33:24,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:33:24,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:33:24,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:33:24,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:33:24,507 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-25 19:33:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:33:24,528 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2020-10-25 19:33:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:33:24,530 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-10-25 19:33:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:33:24,539 INFO L225 Difference]: With dead ends: 51 [2020-10-25 19:33:24,539 INFO L226 Difference]: Without dead ends: 23 [2020-10-25 19:33:24,543 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 19:33:24,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-25 19:33:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-25 19:33:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-25 19:33:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-25 19:33:24,581 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2020-10-25 19:33:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:33:24,581 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-25 19:33:24,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:33:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-25 19:33:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:33:24,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:33:24,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:33:24,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:33:24,584 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:33:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:33:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1065017552, now seen corresponding path program 1 times [2020-10-25 19:33:24,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:33:24,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110509261] [2020-10-25 19:33:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:33:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:33:24,676 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 19:33:24,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110509261] [2020-10-25 19:33:24,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:33:24,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:33:24,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553228412] [2020-10-25 19:33:24,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:33:24,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:33:24,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:33:24,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:33:24,682 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-10-25 19:33:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:33:24,822 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-25 19:33:24,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:33:24,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-25 19:33:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:33:24,824 INFO L225 Difference]: With dead ends: 49 [2020-10-25 19:33:24,824 INFO L226 Difference]: Without dead ends: 33 [2020-10-25 19:33:24,826 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 19:33:24,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-25 19:33:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-10-25 19:33:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-25 19:33:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-25 19:33:24,833 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-10-25 19:33:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:33:24,834 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-25 19:33:24,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:33:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-25 19:33:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 19:33:24,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:33:24,836 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, 1, 1, 1, 1] [2020-10-25 19:33:24,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:33:24,836 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:33:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:33:24,837 INFO L82 PathProgramCache]: Analyzing trace with hash 524088314, now seen corresponding path program 1 times [2020-10-25 19:33:24,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:33:24,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719411171] [2020-10-25 19:33:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:33:24,870 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:33:24,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701686963] [2020-10-25 19:33:24,871 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 19:33:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:33:25,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:33:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:33:25,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:33:25,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:33:25,167 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:33:25,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 19:33:25,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:33:25 BoogieIcfgContainer [2020-10-25 19:33:25,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:33:25,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:33:25,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:33:25,457 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:33:25,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:33:24" (3/4) ... [2020-10-25 19:33:25,460 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:33:25,521 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:33:25,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:33:25,524 INFO L168 Benchmark]: Toolchain (without parser) took 2460.28 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.1 MB in the beginning and 18.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,525 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 16.4 MB in the beginning and 16.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:33:25,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.83 ms. Allocated memory is still 41.9 MB. Free memory was 18.5 MB in the beginning and 17.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.07 ms. Allocated memory is still 41.9 MB. Free memory was 17.4 MB in the beginning and 15.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,527 INFO L168 Benchmark]: Boogie Preprocessor took 30.78 ms. Allocated memory is still 41.9 MB. Free memory was 15.7 MB in the beginning and 14.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,528 INFO L168 Benchmark]: RCFGBuilder took 750.74 ms. Allocated memory is still 41.9 MB. Free memory was 14.3 MB in the beginning and 23.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,529 INFO L168 Benchmark]: TraceAbstraction took 1256.95 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 22.8 MB in the beginning and 21.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,530 INFO L168 Benchmark]: Witness Printer took 64.95 ms. Allocated memory is still 50.3 MB. Free memory was 21.3 MB in the beginning and 18.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:33:25,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 16.4 MB in the beginning and 16.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.83 ms. Allocated memory is still 41.9 MB. Free memory was 18.5 MB in the beginning and 17.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.07 ms. Allocated memory is still 41.9 MB. Free memory was 17.4 MB in the beginning and 15.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.78 ms. Allocated memory is still 41.9 MB. Free memory was 15.7 MB in the beginning and 14.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 750.74 ms. Allocated memory is still 41.9 MB. Free memory was 14.3 MB in the beginning and 23.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1256.95 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 22.8 MB in the beginning and 21.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 64.95 ms. Allocated memory is still 50.3 MB. Free memory was 21.3 MB in the beginning and 18.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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