./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn2f.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/ifeqn2f.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 599f8babb8ec71ee5649a77fd2ff711ec17f1b0f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:50:58,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:50:58,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:50:58,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:50:58,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:50:58,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:50:58,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:50:58,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:50:58,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:50:58,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:50:58,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:50:58,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:50:58,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:50:58,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:50:58,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:50:58,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:50:58,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:50:58,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:50:58,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:50:58,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:50:58,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:50:58,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:50:58,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:50:58,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:50:58,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:50:58,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:50:58,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:50:58,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:50:58,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:50:58,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:50:58,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:50:58,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:50:58,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:50:58,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:50:58,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:50:58,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:50:58,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:50:58,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:50:58,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:50:58,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:50:58,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:50:58,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:50:58,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:50:58,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:50:58,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:50:58,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:50:58,171 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:50:58,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:50:58,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:50:58,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:50:58,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:50:58,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:50:58,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:50:58,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:50:58,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:50:58,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:50:58,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:50:58,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:50:58,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:50:58,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:50:58,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:50:58,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:50:58,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:50:58,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:50:58,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:50:58,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:50:58,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:50:58,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:50:58,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:50:58,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:50:58,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:50:58,179 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 -> 599f8babb8ec71ee5649a77fd2ff711ec17f1b0f [2020-07-28 14:50:58,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:50:58,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:50:58,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:50:58,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:50:58,517 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:50:58,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn2f.c [2020-07-28 14:50:58,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4403888/192450c8fcd941bd80c517eb1f778896/FLAGc5c4ff8e6 [2020-07-28 14:50:59,019 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:50:59,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2f.c [2020-07-28 14:50:59,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4403888/192450c8fcd941bd80c517eb1f778896/FLAGc5c4ff8e6 [2020-07-28 14:50:59,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4403888/192450c8fcd941bd80c517eb1f778896 [2020-07-28 14:50:59,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:50:59,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:50:59,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:50:59,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:50:59,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:50:59,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496c238a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59, skipping insertion in model container [2020-07-28 14:50:59,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:50:59,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:50:59,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:50:59,625 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:50:59,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:50:59,666 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:50:59,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59 WrapperNode [2020-07-28 14:50:59,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:50:59,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:50:59,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:50:59,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:50:59,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:50:59,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:50:59,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:50:59,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:50:59,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (1/1) ... [2020-07-28 14:50:59,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:50:59,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:50:59,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:50:59,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:50:59,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (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 14:50:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:50:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:50:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:50:59,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:50:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:51:00,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:51:00,416 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-28 14:51:00,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:00 BoogieIcfgContainer [2020-07-28 14:51:00,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:51:00,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:51:00,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:51:00,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:51:00,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:50:59" (1/3) ... [2020-07-28 14:51:00,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1072a165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:00, skipping insertion in model container [2020-07-28 14:51:00,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:50:59" (2/3) ... [2020-07-28 14:51:00,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1072a165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:00, skipping insertion in model container [2020-07-28 14:51:00,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:00" (3/3) ... [2020-07-28 14:51:00,429 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-07-28 14:51:00,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:51:00,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:51:00,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:51:00,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:51:00,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:51:00,482 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:51:00,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:51:00,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:51:00,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:51:00,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:51:00,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:51:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-28 14:51:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 14:51:00,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:00,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:00,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:00,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2020-07-28 14:51:00,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:00,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673567912] [2020-07-28 14:51:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:00,669 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {26#true} is VALID [2020-07-28 14:51:00,670 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~mem7, main_#t~post5, main_#t~mem9, main_#t~post8, main_~i~0, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {26#true} is VALID [2020-07-28 14:51:00,670 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#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; {26#true} is VALID [2020-07-28 14:51:00,672 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0 == assume_abort_if_not_~cond;assume false; {27#false} is VALID [2020-07-28 14:51:00,673 INFO L280 TraceCheckUtils]: 4: Hoare triple {27#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;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~b~0.base, main_~b~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;main_~i~0 := 0; {27#false} is VALID [2020-07-28 14:51:00,673 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#false} assume !(main_~i~0 < ~N~0); {27#false} is VALID [2020-07-28 14:51:00,673 INFO L280 TraceCheckUtils]: 6: Hoare triple {27#false} main_~i~0 := 0; {27#false} is VALID [2020-07-28 14:51:00,673 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#false} assume !true; {27#false} is VALID [2020-07-28 14:51:00,674 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} main_~i~0 := 0; {27#false} is VALID [2020-07-28 14:51:00,674 INFO L280 TraceCheckUtils]: 9: Hoare triple {27#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem9 := read~int(main_~b~0.base, main_~b~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem9 == 2 * main_~i~0 * main_~i~0 + 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {27#false} is VALID [2020-07-28 14:51:00,675 INFO L280 TraceCheckUtils]: 10: Hoare triple {27#false} assume 0 == __VERIFIER_assert_~cond; {27#false} is VALID [2020-07-28 14:51:00,675 INFO L280 TraceCheckUtils]: 11: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-28 14:51:00,677 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 14:51:00,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673567912] [2020-07-28 14:51:00,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:00,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:51:00,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470893389] [2020-07-28 14:51:00,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-28 14:51:00,688 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:00,691 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:51:00,741 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:00,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:51:00,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:00,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:51:00,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:51:00,756 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-28 14:51:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:00,827 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-07-28 14:51:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:51:00,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-28 14:51:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2020-07-28 14:51:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2020-07-28 14:51:00,841 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 60 transitions. [2020-07-28 14:51:00,945 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:00,956 INFO L225 Difference]: With dead ends: 42 [2020-07-28 14:51:00,956 INFO L226 Difference]: Without dead ends: 19 [2020-07-28 14:51:00,960 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 14:51:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-28 14:51:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-28 14:51:00,997 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:00,998 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-28 14:51:00,999 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-28 14:51:00,999 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-28 14:51:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:01,002 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-07-28 14:51:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-07-28 14:51:01,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:01,003 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:01,003 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-28 14:51:01,003 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-28 14:51:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:01,005 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-07-28 14:51:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-07-28 14:51:01,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:01,006 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:01,006 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:01,007 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-28 14:51:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-07-28 14:51:01,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-07-28 14:51:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:01,011 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-07-28 14:51:01,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:51:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-07-28 14:51:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 14:51:01,012 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:01,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:01,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:51:01,013 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:01,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2020-07-28 14:51:01,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:01,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327134037] [2020-07-28 14:51:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:01,112 INFO L280 TraceCheckUtils]: 0: Hoare triple {140#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {140#true} is VALID [2020-07-28 14:51:01,112 INFO L280 TraceCheckUtils]: 1: Hoare triple {140#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~mem7, main_#t~post5, main_#t~mem9, main_#t~post8, main_~i~0, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {140#true} is VALID [2020-07-28 14:51:01,114 INFO L280 TraceCheckUtils]: 2: Hoare triple {140#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; {142#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:01,115 INFO L280 TraceCheckUtils]: 3: Hoare triple {142#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {142#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:01,116 INFO L280 TraceCheckUtils]: 4: Hoare triple {142#(<= 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;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~b~0.base, main_~b~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;main_~i~0 := 0; {143#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:51:01,118 INFO L280 TraceCheckUtils]: 5: Hoare triple {143#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {141#false} is VALID [2020-07-28 14:51:01,118 INFO L280 TraceCheckUtils]: 6: Hoare triple {141#false} main_~i~0 := 0; {141#false} is VALID [2020-07-28 14:51:01,118 INFO L280 TraceCheckUtils]: 7: Hoare triple {141#false} assume !(main_~i~0 < ~N~0); {141#false} is VALID [2020-07-28 14:51:01,119 INFO L280 TraceCheckUtils]: 8: Hoare triple {141#false} main_~i~0 := 0; {141#false} is VALID [2020-07-28 14:51:01,119 INFO L280 TraceCheckUtils]: 9: Hoare triple {141#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem9 := read~int(main_~b~0.base, main_~b~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem9 == 2 * main_~i~0 * main_~i~0 + 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {141#false} is VALID [2020-07-28 14:51:01,119 INFO L280 TraceCheckUtils]: 10: Hoare triple {141#false} assume 0 == __VERIFIER_assert_~cond; {141#false} is VALID [2020-07-28 14:51:01,119 INFO L280 TraceCheckUtils]: 11: Hoare triple {141#false} assume !false; {141#false} is VALID [2020-07-28 14:51:01,121 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 14:51:01,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327134037] [2020-07-28 14:51:01,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:01,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:51:01,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799845339] [2020-07-28 14:51:01,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-28 14:51:01,124 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:01,124 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:51:01,144 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:01,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:51:01,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:51:01,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:51:01,145 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-07-28 14:51:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:01,312 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-07-28 14:51:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:51:01,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-28 14:51:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:51:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2020-07-28 14:51:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:51:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2020-07-28 14:51:01,318 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 57 transitions. [2020-07-28 14:51:01,407 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:01,410 INFO L225 Difference]: With dead ends: 45 [2020-07-28 14:51:01,410 INFO L226 Difference]: Without dead ends: 31 [2020-07-28 14:51:01,411 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 14:51:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-28 14:51:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-07-28 14:51:01,426 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:01,426 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 23 states. [2020-07-28 14:51:01,426 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 23 states. [2020-07-28 14:51:01,426 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 23 states. [2020-07-28 14:51:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:01,429 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-28 14:51:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-28 14:51:01,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:01,430 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:01,430 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 31 states. [2020-07-28 14:51:01,431 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 31 states. [2020-07-28 14:51:01,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:01,433 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-28 14:51:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-28 14:51:01,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:01,434 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:01,435 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:01,435 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 14:51:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-28 14:51:01,437 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-07-28 14:51:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:01,438 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-28 14:51:01,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:51:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-28 14:51:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-28 14:51:01,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:01,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:01,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:51:01,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:01,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2020-07-28 14:51:01,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:01,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059901850] [2020-07-28 14:51:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:01,465 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:51:01,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621908073] [2020-07-28 14:51:01,465 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 14:51:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:51:01,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:51:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:51:01,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:51:01,605 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:51:01,606 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:51:01,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:51:01,877 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:51:01,878 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:51:01,878 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:51:01,878 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:51:01,878 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-28 14:51:01,879 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:51:01,879 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:51:01,879 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:51:01,879 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:51:01,879 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-28 14:51:01,880 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-28 14:51:01,880 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-28 14:51:01,880 WARN L170 areAnnotationChecker]: L29-4 has no Hoare annotation [2020-07-28 14:51:01,880 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 14:51:01,881 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 14:51:01,881 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:01,881 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:01,881 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:01,881 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-28 14:51:01,882 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-28 14:51:01,882 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-28 14:51:01,882 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-28 14:51:01,882 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-28 14:51:01,883 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-28 14:51:01,883 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-28 14:51:01,883 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 14:51:01,883 WARN L170 areAnnotationChecker]: L47-4 has no Hoare annotation [2020-07-28 14:51:01,883 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:51:01,884 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:51:01,884 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:51:01,884 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:51:01,884 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:51:01,885 WARN L170 areAnnotationChecker]: L47-2 has no Hoare annotation [2020-07-28 14:51:01,885 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 14:51:01,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:51:01 BoogieIcfgContainer [2020-07-28 14:51:01,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:51:01,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:51:01,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:51:01,889 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:51:01,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:00" (3/4) ... [2020-07-28 14:51:01,893 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:51:01,958 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:51:01,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:51:01,962 INFO L168 Benchmark]: Toolchain (without parser) took 2569.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 952.2 MB in the beginning and 998.3 MB in the end (delta: -46.1 MB). Peak memory consumption was 107.5 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:01,963 INFO L168 Benchmark]: CDTParser took 0.29 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 14:51:01,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:01,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -202.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:01,965 INFO L168 Benchmark]: Boogie Preprocessor took 30.90 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 14:51:01,966 INFO L168 Benchmark]: RCFGBuilder took 621.43 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:01,967 INFO L168 Benchmark]: TraceAbstraction took 1467.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 109.0 MB). Peak memory consumption was 109.0 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:01,967 INFO L168 Benchmark]: Witness Printer took 70.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:01,971 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 0.29 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 273.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 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 99.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -202.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.90 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 621.43 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1467.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 109.0 MB). Peak memory consumption was 109.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 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); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 VAL [N=1] [L29] COND TRUE i