./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum_array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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/loops/sum_array-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 729bcf7bc8da07a9502e2c955dd21c14a257521f ............................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 00:55:46,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:55:46,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:55:46,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:55:46,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:55:46,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:55:46,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:55:46,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:55:46,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:55:46,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:55:46,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:55:46,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:55:46,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:55:46,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:55:46,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:55:46,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:55:46,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:55:46,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:55:46,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:55:46,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:55:46,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:55:46,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:55:46,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:55:46,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:55:46,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:55:46,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:55:46,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:55:46,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:55:46,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:55:46,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:55:46,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:55:46,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:55:46,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:55:46,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:55:46,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:55:46,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:55:46,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:55:46,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:55:46,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:55:46,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:55:46,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:55:46,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:55:46,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:55:46,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:55:46,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:55:46,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:55:46,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:55:46,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:55:46,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:55:46,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:55:46,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:55:46,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:55:46,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:55:46,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:55:46,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:55:46,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:55:46,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:55:46,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:55:46,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:55:46,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:55:46,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:55:46,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:55:46,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:55:46,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:55:46,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:55:46,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:55:46,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:55:46,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:55:46,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:55:46,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:55:46,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:55:46,847 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 729bcf7bc8da07a9502e2c955dd21c14a257521f [2020-10-20 00:55:47,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:55:47,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:55:47,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:55:47,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:55:47,079 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:55:47,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-1.c [2020-10-20 00:55:47,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcd94a72/7d7f5861543c44f9893e5a3a6f7cb8ed/FLAGd95da257f [2020-10-20 00:55:47,592 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:55:47,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-1.c [2020-10-20 00:55:47,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcd94a72/7d7f5861543c44f9893e5a3a6f7cb8ed/FLAGd95da257f [2020-10-20 00:55:47,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcd94a72/7d7f5861543c44f9893e5a3a6f7cb8ed [2020-10-20 00:55:47,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:55:48,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:55:48,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:48,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:55:48,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:55:48,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:47" (1/1) ... [2020-10-20 00:55:48,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42343282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48, skipping insertion in model container [2020-10-20 00:55:48,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:55:47" (1/1) ... [2020-10-20 00:55:48,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:55:48,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:55:48,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:48,381 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:55:48,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:55:48,444 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:55:48,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48 WrapperNode [2020-10-20 00:55:48,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:55:48,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:48,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:55:48,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:55:48,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:55:48,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:55:48,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:55:48,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:55:48,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... [2020-10-20 00:55:48,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:55:48,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:55:48,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:55:48,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:55:48,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:55:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:55:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:55:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:55:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:55:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:55:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:55:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:55:48,916 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:55:48,917 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-20 00:55:48,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:48 BoogieIcfgContainer [2020-10-20 00:55:48,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:55:48,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:55:48,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:55:48,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:55:48,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:55:47" (1/3) ... [2020-10-20 00:55:48,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beed56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:48, skipping insertion in model container [2020-10-20 00:55:48,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:55:48" (2/3) ... [2020-10-20 00:55:48,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beed56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:55:48, skipping insertion in model container [2020-10-20 00:55:48,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:48" (3/3) ... [2020-10-20 00:55:48,927 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-10-20 00:55:48,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:55:48,946 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:55:48,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:55:48,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:55:48,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:55:48,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:55:48,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:55:48,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:55:48,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:55:48,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:55:48,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:55:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-20 00:55:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:55:49,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:49,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:49,001 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash -779788197, now seen corresponding path program 1 times [2020-10-20 00:55:49,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:49,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316348226] [2020-10-20 00:55:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:55:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:55:49,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316348226] [2020-10-20 00:55:49,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:55:49,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:55:49,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640279663] [2020-10-20 00:55:49,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:55:49,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:55:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:55:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:55:49,345 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-20 00:55:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:55:49,525 INFO L93 Difference]: Finished difference Result 61 states and 89 transitions. [2020-10-20 00:55:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:55:49,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 00:55:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:55:49,537 INFO L225 Difference]: With dead ends: 61 [2020-10-20 00:55:49,537 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:55:49,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:55:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:55:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-10-20 00:55:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 00:55:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-20 00:55:49,606 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-10-20 00:55:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:55:49,607 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-20 00:55:49,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:55:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-20 00:55:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:55:49,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:55:49,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:55:49,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:55:49,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:55:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:55:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1602849365, now seen corresponding path program 1 times [2020-10-20 00:55:49,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:55:49,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65988625] [2020-10-20 00:55:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:55:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:55:49,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:55:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:55:49,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:55:49,827 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:55:49,828 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:55:49,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:55:49,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:55:49 BoogieIcfgContainer [2020-10-20 00:55:49,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:55:49,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:55:49,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:55:49,878 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:55:49,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:55:48" (3/4) ... [2020-10-20 00:55:49,882 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:55:49,937 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:55:49,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:55:49,941 INFO L168 Benchmark]: Toolchain (without parser) took 1955.30 ms. Allocated memory was 34.1 MB in the beginning and 48.2 MB in the end (delta: 14.2 MB). Free memory was 7.0 MB in the beginning and 25.7 MB in the end (delta: -18.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:55:49,942 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 11.9 MB in the beginning and 11.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.83 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.4 MB in the beginning and 25.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.28 ms. Allocated memory is still 44.0 MB. Free memory was 25.5 MB in the beginning and 23.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,944 INFO L168 Benchmark]: Boogie Preprocessor took 55.68 ms. Allocated memory is still 44.0 MB. Free memory was 23.6 MB in the beginning and 22.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,945 INFO L168 Benchmark]: RCFGBuilder took 350.34 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 22.1 MB in the beginning and 19.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,946 INFO L168 Benchmark]: TraceAbstraction took 956.91 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 18.4 MB in the beginning and 28.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,947 INFO L168 Benchmark]: Witness Printer took 60.68 ms. Allocated memory is still 48.2 MB. Free memory was 28.7 MB in the beginning and 25.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:55:49,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 11.9 MB in the beginning and 11.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 444.83 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.4 MB in the beginning and 25.7 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 65.28 ms. Allocated memory is still 44.0 MB. Free memory was 25.5 MB in the beginning and 23.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 55.68 ms. Allocated memory is still 44.0 MB. Free memory was 23.6 MB in the beginning and 22.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 350.34 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 22.1 MB in the beginning and 19.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 956.91 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 18.4 MB in the beginning and 28.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * Witness Printer took 60.68 ms. Allocated memory is still 48.2 MB. Free memory was 28.7 MB in the beginning and 25.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i