./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina5f.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/sina5f.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 eac7a9794b5c134e92d169c4a345f548d861570f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:57:09,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:57:09,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:57:09,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:57:09,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:57:09,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:57:09,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:57:09,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:57:09,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:57:09,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:57:09,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:57:09,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:57:09,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:57:09,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:57:09,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:57:09,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:57:09,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:57:09,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:57:09,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:57:09,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:57:09,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:57:09,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:57:09,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:57:09,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:57:09,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:57:09,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:57:09,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:57:09,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:57:09,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:57:09,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:57:09,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:57:09,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:57:09,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:57:09,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:57:09,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:57:09,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:57:09,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:57:09,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:57:09,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:57:09,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:57:09,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:57:09,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:57:09,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:57:09,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:57:09,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:57:09,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:57:09,890 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:57:09,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:57:09,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:57:09,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:57:09,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:57:09,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:57:09,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:57:09,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:57:09,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:57:09,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:57:09,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:57:09,896 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:57:09,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:57:09,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:57:09,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:57:09,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:57:09,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:57:09,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:57:09,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:57:09,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:57:09,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:57:09,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:57:09,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:57:09,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:57:09,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:57:09,900 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 -> eac7a9794b5c134e92d169c4a345f548d861570f [2020-07-28 14:57:10,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:57:10,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:57:10,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:57:10,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:57:10,248 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:57:10,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina5f.c [2020-07-28 14:57:10,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449a6ed10/855ee3674f6645179cfd1f291499600c/FLAGfb018fd2f [2020-07-28 14:57:10,789 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:57:10,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5f.c [2020-07-28 14:57:10,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449a6ed10/855ee3674f6645179cfd1f291499600c/FLAGfb018fd2f [2020-07-28 14:57:11,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449a6ed10/855ee3674f6645179cfd1f291499600c [2020-07-28 14:57:11,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:57:11,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:57:11,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:11,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:57:11,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:57:11,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694e97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11, skipping insertion in model container [2020-07-28 14:57:11,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:57:11,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:57:11,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:11,398 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:57:11,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:11,443 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:57:11,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11 WrapperNode [2020-07-28 14:57:11,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:11,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:11,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:57:11,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:57:11,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:11,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:57:11,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:57:11,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:57:11,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (1/1) ... [2020-07-28 14:57:11,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:57:11,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:57:11,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:57:11,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:57:11,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (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 14:57:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 14:57:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:57:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:57:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:57:11,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:57:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:57:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 14:57:12,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:57:12,149 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 14:57:12,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:12 BoogieIcfgContainer [2020-07-28 14:57:12,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:57:12,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:57:12,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:57:12,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:57:12,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:57:11" (1/3) ... [2020-07-28 14:57:12,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd827b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:12, skipping insertion in model container [2020-07-28 14:57:12,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:11" (2/3) ... [2020-07-28 14:57:12,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd827b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:12, skipping insertion in model container [2020-07-28 14:57:12,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:12" (3/3) ... [2020-07-28 14:57:12,170 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-07-28 14:57:12,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:57:12,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:57:12,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:57:12,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:57:12,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:57:12,225 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:57:12,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:57:12,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:57:12,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:57:12,226 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:57:12,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:57:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-28 14:57:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-28 14:57:12,248 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:12,249 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 14:57:12,250 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2020-07-28 14:57:12,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:12,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750390278] [2020-07-28 14:57:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:12,423 INFO L280 TraceCheckUtils]: 0: Hoare triple {33#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {33#true} is VALID [2020-07-28 14:57:12,424 INFO L280 TraceCheckUtils]: 1: Hoare triple {33#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~post3, main_#t~post4, main_#t~mem6, main_#t~mem7, main_#t~post5, main_#t~mem9, main_#t~mem10, main_#t~post8, main_#t~mem12, main_#t~mem13, main_#t~post11, main_#t~mem15, main_#t~post14, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, 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; {33#true} is VALID [2020-07-28 14:57:12,424 INFO L280 TraceCheckUtils]: 2: Hoare triple {33#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; {33#true} is VALID [2020-07-28 14:57:12,425 INFO L280 TraceCheckUtils]: 3: Hoare triple {33#true} assume 0 == assume_abort_if_not_~cond;assume false; {34#false} is VALID [2020-07-28 14:57:12,426 INFO L280 TraceCheckUtils]: 4: Hoare triple {34#false} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);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;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {34#false} is VALID [2020-07-28 14:57:12,426 INFO L280 TraceCheckUtils]: 5: Hoare triple {34#false} assume !(main_~i~0 < ~N~0); {34#false} is VALID [2020-07-28 14:57:12,427 INFO L280 TraceCheckUtils]: 6: Hoare triple {34#false} main_~i~0 := 0; {34#false} is VALID [2020-07-28 14:57:12,427 INFO L280 TraceCheckUtils]: 7: Hoare triple {34#false} assume !(main_~i~0 < ~N~0); {34#false} is VALID [2020-07-28 14:57:12,428 INFO L280 TraceCheckUtils]: 8: Hoare triple {34#false} main_~i~0 := 0; {34#false} is VALID [2020-07-28 14:57:12,428 INFO L280 TraceCheckUtils]: 9: Hoare triple {34#false} assume !(main_~i~0 < ~N~0); {34#false} is VALID [2020-07-28 14:57:12,428 INFO L280 TraceCheckUtils]: 10: Hoare triple {34#false} main_~i~0 := 0; {34#false} is VALID [2020-07-28 14:57:12,429 INFO L280 TraceCheckUtils]: 11: Hoare triple {34#false} assume !true; {34#false} is VALID [2020-07-28 14:57:12,429 INFO L280 TraceCheckUtils]: 12: Hoare triple {34#false} main_~i~0 := 0; {34#false} is VALID [2020-07-28 14:57:12,430 INFO L280 TraceCheckUtils]: 13: Hoare triple {34#false} assume !true; {34#false} is VALID [2020-07-28 14:57:12,430 INFO L280 TraceCheckUtils]: 14: Hoare triple {34#false} main_~i~0 := 0; {34#false} is VALID [2020-07-28 14:57:12,430 INFO L280 TraceCheckUtils]: 15: Hoare triple {34#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem15 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem15 == 2 * ~N~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {34#false} is VALID [2020-07-28 14:57:12,431 INFO L280 TraceCheckUtils]: 16: Hoare triple {34#false} assume 0 == __VERIFIER_assert_~cond; {34#false} is VALID [2020-07-28 14:57:12,431 INFO L280 TraceCheckUtils]: 17: Hoare triple {34#false} assume !false; {34#false} is VALID [2020-07-28 14:57:12,435 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 14:57:12,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750390278] [2020-07-28 14:57:12,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:12,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:57:12,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668297552] [2020-07-28 14:57:12,445 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-07-28 14:57:12,447 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:12,451 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:57:12,486 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:12,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:57:12,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:57:12,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:57:12,499 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-28 14:57:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:12,574 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2020-07-28 14:57:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:57:12,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-07-28 14:57:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:12,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 82 transitions. [2020-07-28 14:57:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 82 transitions. [2020-07-28 14:57:12,598 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 82 transitions. [2020-07-28 14:57:12,722 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:12,734 INFO L225 Difference]: With dead ends: 56 [2020-07-28 14:57:12,734 INFO L226 Difference]: Without dead ends: 26 [2020-07-28 14:57:12,738 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 14:57:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-28 14:57:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-28 14:57:12,776 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:12,776 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2020-07-28 14:57:12,777 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-28 14:57:12,777 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-28 14:57:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:12,781 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-07-28 14:57:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-07-28 14:57:12,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:12,782 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:12,783 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-28 14:57:12,783 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-28 14:57:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:12,786 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-07-28 14:57:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-07-28 14:57:12,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:12,788 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:12,788 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:12,788 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-28 14:57:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-07-28 14:57:12,793 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2020-07-28 14:57:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:12,793 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-07-28 14:57:12,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:57:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-07-28 14:57:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-28 14:57:12,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:12,795 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 14:57:12,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:57:12,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:12,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2020-07-28 14:57:12,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:12,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714667516] [2020-07-28 14:57:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:12,914 INFO L280 TraceCheckUtils]: 0: Hoare triple {191#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {191#true} is VALID [2020-07-28 14:57:12,914 INFO L280 TraceCheckUtils]: 1: Hoare triple {191#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~post3, main_#t~post4, main_#t~mem6, main_#t~mem7, main_#t~post5, main_#t~mem9, main_#t~mem10, main_#t~post8, main_#t~mem12, main_#t~mem13, main_#t~post11, main_#t~mem15, main_#t~post14, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, 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; {191#true} is VALID [2020-07-28 14:57:12,916 INFO L280 TraceCheckUtils]: 2: Hoare triple {191#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; {193#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:12,917 INFO L280 TraceCheckUtils]: 3: Hoare triple {193#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {193#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:12,919 INFO L280 TraceCheckUtils]: 4: Hoare triple {193#(<= 1 ~N~0)} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);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;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {194#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:57:12,921 INFO L280 TraceCheckUtils]: 5: Hoare triple {194#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {192#false} is VALID [2020-07-28 14:57:12,921 INFO L280 TraceCheckUtils]: 6: Hoare triple {192#false} main_~i~0 := 0; {192#false} is VALID [2020-07-28 14:57:12,921 INFO L280 TraceCheckUtils]: 7: Hoare triple {192#false} assume !(main_~i~0 < ~N~0); {192#false} is VALID [2020-07-28 14:57:12,922 INFO L280 TraceCheckUtils]: 8: Hoare triple {192#false} main_~i~0 := 0; {192#false} is VALID [2020-07-28 14:57:12,922 INFO L280 TraceCheckUtils]: 9: Hoare triple {192#false} assume !(main_~i~0 < ~N~0); {192#false} is VALID [2020-07-28 14:57:12,923 INFO L280 TraceCheckUtils]: 10: Hoare triple {192#false} main_~i~0 := 0; {192#false} is VALID [2020-07-28 14:57:12,923 INFO L280 TraceCheckUtils]: 11: Hoare triple {192#false} assume !(main_~i~0 < ~N~0); {192#false} is VALID [2020-07-28 14:57:12,924 INFO L280 TraceCheckUtils]: 12: Hoare triple {192#false} main_~i~0 := 0; {192#false} is VALID [2020-07-28 14:57:12,924 INFO L280 TraceCheckUtils]: 13: Hoare triple {192#false} assume !(main_~i~0 < ~N~0); {192#false} is VALID [2020-07-28 14:57:12,925 INFO L280 TraceCheckUtils]: 14: Hoare triple {192#false} main_~i~0 := 0; {192#false} is VALID [2020-07-28 14:57:12,925 INFO L280 TraceCheckUtils]: 15: Hoare triple {192#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem15 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem15 == 2 * ~N~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {192#false} is VALID [2020-07-28 14:57:12,925 INFO L280 TraceCheckUtils]: 16: Hoare triple {192#false} assume 0 == __VERIFIER_assert_~cond; {192#false} is VALID [2020-07-28 14:57:12,926 INFO L280 TraceCheckUtils]: 17: Hoare triple {192#false} assume !false; {192#false} is VALID [2020-07-28 14:57:12,928 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 14:57:12,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714667516] [2020-07-28 14:57:12,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:12,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:57:12,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546333804] [2020-07-28 14:57:12,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-07-28 14:57:12,932 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:12,932 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:57:12,960 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:12,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:57:12,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:12,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:57:12,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:57:12,962 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2020-07-28 14:57:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:13,191 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-07-28 14:57:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:57:13,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-07-28 14:57:13,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2020-07-28 14:57:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2020-07-28 14:57:13,198 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 75 transitions. [2020-07-28 14:57:13,297 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 75 edges. 75 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:13,299 INFO L225 Difference]: With dead ends: 61 [2020-07-28 14:57:13,300 INFO L226 Difference]: Without dead ends: 42 [2020-07-28 14:57:13,301 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 14:57:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-28 14:57:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2020-07-28 14:57:13,324 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:13,325 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 31 states. [2020-07-28 14:57:13,325 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 31 states. [2020-07-28 14:57:13,325 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 31 states. [2020-07-28 14:57:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:13,329 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-28 14:57:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-07-28 14:57:13,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:13,330 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:13,330 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 42 states. [2020-07-28 14:57:13,330 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 42 states. [2020-07-28 14:57:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:13,334 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-28 14:57:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-07-28 14:57:13,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:13,335 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:13,335 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:13,335 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-28 14:57:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-07-28 14:57:13,338 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2020-07-28 14:57:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:13,338 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-07-28 14:57:13,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:57:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-07-28 14:57:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-28 14:57:13,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:13,340 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, 1] [2020-07-28 14:57:13,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:57:13,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:13,341 INFO L82 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2020-07-28 14:57:13,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:13,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709720794] [2020-07-28 14:57:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:13,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:13,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:13,600 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:57:13,600 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:57:13,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 14:57:13,672 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:57:13,673 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:57:13,673 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:13,673 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:13,673 WARN L170 areAnnotationChecker]: L60 has no Hoare annotation [2020-07-28 14:57:13,673 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:13,673 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:13,674 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:57:13,674 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:57:13,675 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-28 14:57:13,675 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-28 14:57:13,675 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-28 14:57:13,675 WARN L170 areAnnotationChecker]: L31-4 has no Hoare annotation [2020-07-28 14:57:13,675 WARN L170 areAnnotationChecker]: L31-2 has no Hoare annotation [2020-07-28 14:57:13,675 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L36-4 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L36-2 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L41-3 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L41-3 has no Hoare annotation [2020-07-28 14:57:13,676 WARN L170 areAnnotationChecker]: L41-3 has no Hoare annotation [2020-07-28 14:57:13,677 WARN L170 areAnnotationChecker]: L41-4 has no Hoare annotation [2020-07-28 14:57:13,677 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2020-07-28 14:57:13,677 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:57:13,677 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:57:13,677 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:57:13,677 WARN L170 areAnnotationChecker]: L46-4 has no Hoare annotation [2020-07-28 14:57:13,678 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 14:57:13,678 WARN L170 areAnnotationChecker]: L51-3 has no Hoare annotation [2020-07-28 14:57:13,678 WARN L170 areAnnotationChecker]: L51-3 has no Hoare annotation [2020-07-28 14:57:13,678 WARN L170 areAnnotationChecker]: L51-3 has no Hoare annotation [2020-07-28 14:57:13,678 WARN L170 areAnnotationChecker]: L51-4 has no Hoare annotation [2020-07-28 14:57:13,678 WARN L170 areAnnotationChecker]: L51-2 has no Hoare annotation [2020-07-28 14:57:13,679 WARN L170 areAnnotationChecker]: L56-3 has no Hoare annotation [2020-07-28 14:57:13,679 WARN L170 areAnnotationChecker]: L56-3 has no Hoare annotation [2020-07-28 14:57:13,679 WARN L170 areAnnotationChecker]: L56-3 has no Hoare annotation [2020-07-28 14:57:13,683 WARN L170 areAnnotationChecker]: L56-4 has no Hoare annotation [2020-07-28 14:57:13,683 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:13,684 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:13,684 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:13,684 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:13,684 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:57:13,684 WARN L170 areAnnotationChecker]: L56-2 has no Hoare annotation [2020-07-28 14:57:13,685 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 14:57:13,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:57:13 BoogieIcfgContainer [2020-07-28 14:57:13,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:57:13,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:57:13,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:57:13,697 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:57:13,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:12" (3/4) ... [2020-07-28 14:57:13,700 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:57:13,826 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:57:13,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:57:13,834 INFO L168 Benchmark]: Toolchain (without parser) took 2672.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 961.6 MB in the beginning and 957.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 133.4 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:13,834 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:13,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.82 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:13,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:13,836 INFO L168 Benchmark]: Boogie Preprocessor took 49.20 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 14:57:13,842 INFO L168 Benchmark]: RCFGBuilder took 528.72 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: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:13,842 INFO L168 Benchmark]: TraceAbstraction took 1532.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.9 MB in the end (delta: 120.7 MB). Peak memory consumption was 120.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:13,843 INFO L168 Benchmark]: Witness Printer took 137.59 ms. Allocated memory is still 1.2 GB. Free memory was 963.9 MB in the beginning and 957.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:13,848 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 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.82 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 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 131.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.20 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 528.72 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: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1532.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.9 MB in the end (delta: 120.7 MB). Peak memory consumption was 120.7 MB. Max. memory is 11.5 GB. * Witness Printer took 137.59 ms. Allocated memory is still 1.2 GB. Free memory was 963.9 MB in the beginning and 957.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 VAL [N=1] [L31] COND TRUE i