./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/brs3f.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 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:24:45,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:24:45,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:24:45,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:24:45,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:24:45,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:24:45,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:24:45,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:24:45,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:24:45,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:24:45,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:24:45,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:24:45,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:24:45,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:24:45,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:24:45,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:24:45,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:24:45,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:24:45,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:24:45,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:24:45,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:24:45,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:24:45,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:24:45,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:24:45,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:24:45,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:24:45,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:24:45,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:24:45,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:24:45,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:24:45,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:24:45,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:24:45,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:24:45,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:24:45,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:24:45,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:24:45,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:24:45,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:24:45,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:24:45,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:24:45,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:24:45,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:24:45,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:24:45,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:24:45,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:24:45,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:24:45,919 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:24:45,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:24:45,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:24:45,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:24:45,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:24:45,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:24:45,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:24:45,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:24:45,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:24:45,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:24:45,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:24:45,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:24:45,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:24:45,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:24:45,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:24:45,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:24:45,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:24:45,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:24:45,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:24:45,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:24:45,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:24:45,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:24:45,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:24:45,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:24:45,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:24:45,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 [2020-10-25 19:24:46,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:24:46,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:24:46,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:24:46,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:24:46,418 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:24:46,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs3f.c [2020-10-25 19:24:46,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650b170c2/ab82c7ffe3aa49b1b1805eefefaed35a/FLAG223268477 [2020-10-25 19:24:47,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:24:47,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3f.c [2020-10-25 19:24:47,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650b170c2/ab82c7ffe3aa49b1b1805eefefaed35a/FLAG223268477 [2020-10-25 19:24:47,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650b170c2/ab82c7ffe3aa49b1b1805eefefaed35a [2020-10-25 19:24:47,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:24:47,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:24:47,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:24:47,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:24:47,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:24:47,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:47,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20400327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47, skipping insertion in model container [2020-10-25 19:24:47,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:47,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:24:47,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:24:47,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:24:47,948 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:24:47,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:24:47,989 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:24:47,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47 WrapperNode [2020-10-25 19:24:47,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:24:47,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:24:47,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:24:47,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:24:48,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:24:48,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:24:48,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:24:48,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:24:48,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... [2020-10-25 19:24:48,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:24:48,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:24:48,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:24:48,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:24:48,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:24:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:24:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:24:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:24:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 19:24:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:24:48,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:24:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:24:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 19:24:48,458 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:24:48,458 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 19:24:48,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:24:48 BoogieIcfgContainer [2020-10-25 19:24:48,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:24:48,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:24:48,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:24:48,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:24:48,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:24:47" (1/3) ... [2020-10-25 19:24:48,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f0b821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:24:48, skipping insertion in model container [2020-10-25 19:24:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:24:47" (2/3) ... [2020-10-25 19:24:48,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f0b821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:24:48, skipping insertion in model container [2020-10-25 19:24:48,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:24:48" (3/3) ... [2020-10-25 19:24:48,474 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-10-25 19:24:48,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:24:48,496 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:24:48,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:24:48,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:24:48,591 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:24:48,591 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:24:48,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:24:48,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:24:48,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:24:48,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:24:48,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:24:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-25 19:24:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 19:24:48,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:24:48,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:24:48,653 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:24:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:24:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-10-25 19:24:48,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:24:48,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466126156] [2020-10-25 19:24:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:24:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:24:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:24:48,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466126156] [2020-10-25 19:24:48,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:24:48,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:24:48,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742943548] [2020-10-25 19:24:48,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:24:48,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:24:48,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:24:48,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:24:48,990 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-25 19:24:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:24:49,014 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-25 19:24:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:24:49,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-25 19:24:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:24:49,029 INFO L225 Difference]: With dead ends: 37 [2020-10-25 19:24:49,030 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 19:24:49,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:24:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 19:24:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 19:24:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 19:24:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-10-25 19:24:49,088 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-10-25 19:24:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:24:49,089 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-10-25 19:24:49,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:24:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-10-25 19:24:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 19:24:49,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:24:49,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:24:49,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:24:49,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:24:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:24:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-10-25 19:24:49,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:24:49,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744252728] [2020-10-25 19:24:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:24:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:24:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:24:49,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744252728] [2020-10-25 19:24:49,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:24:49,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:24:49,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453625079] [2020-10-25 19:24:49,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:24:49,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:24:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:24:49,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:24:49,270 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-10-25 19:24:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:24:49,351 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-10-25 19:24:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:24:49,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-25 19:24:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:24:49,352 INFO L225 Difference]: With dead ends: 33 [2020-10-25 19:24:49,353 INFO L226 Difference]: Without dead ends: 22 [2020-10-25 19:24:49,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:24:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-25 19:24:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-10-25 19:24:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 19:24:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-25 19:24:49,360 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-10-25 19:24:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:24:49,360 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-25 19:24:49,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:24:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-25 19:24:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:24:49,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:24:49,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:24:49,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:24:49,362 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:24:49,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:24:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-10-25 19:24:49,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:24:49,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754459969] [2020-10-25 19:24:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:24:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:24:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 19:24:49,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754459969] [2020-10-25 19:24:49,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:24:49,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 19:24:49,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237518811] [2020-10-25 19:24:49,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:24:49,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:24:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:24:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:24:49,506 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-25 19:24:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:24:49,593 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-25 19:24:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:24:49,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-25 19:24:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:24:49,595 INFO L225 Difference]: With dead ends: 27 [2020-10-25 19:24:49,595 INFO L226 Difference]: Without dead ends: 23 [2020-10-25 19:24:49,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:24:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-25 19:24:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-25 19:24:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 19:24:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-25 19:24:49,608 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-10-25 19:24:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:24:49,609 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-25 19:24:49,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:24:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-25 19:24:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:24:49,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:24:49,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:24:49,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:24:49,612 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:24:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:24:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-10-25 19:24:49,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:24:49,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146827068] [2020-10-25 19:24:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:24:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:24:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:24:49,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146827068] [2020-10-25 19:24:49,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756919288] [2020-10-25 19:24:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:24:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:24:49,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 19:24:49,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:24:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:24:49,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:24:49,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-10-25 19:24:49,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833209213] [2020-10-25 19:24:49,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 19:24:49,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:24:49,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 19:24:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:24:49,998 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-10-25 19:24:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:24:50,159 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-10-25 19:24:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 19:24:50,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-25 19:24:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:24:50,161 INFO L225 Difference]: With dead ends: 43 [2020-10-25 19:24:50,161 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 19:24:50,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-25 19:24:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 19:24:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-25 19:24:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-25 19:24:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-25 19:24:50,169 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-10-25 19:24:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:24:50,169 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-25 19:24:50,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 19:24:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-25 19:24:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:24:50,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:24:50,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:24:50,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:24:50,373 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:24:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:24:50,374 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-10-25 19:24:50,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:24:50,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405201807] [2020-10-25 19:24:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:24:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:24:50,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:24:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:24:50,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:24:50,487 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:24:50,488 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:24:50,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:24:50,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:24:50 BoogieIcfgContainer [2020-10-25 19:24:50,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:24:50,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:24:50,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:24:50,548 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:24:50,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:24:48" (3/4) ... [2020-10-25 19:24:50,551 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:24:50,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:24:50,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:24:50,621 INFO L168 Benchmark]: Toolchain (without parser) took 2982.12 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 23.7 MB in the end (delta: -636.2 kB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:24:50,622 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 46.1 MB. Free memory was 28.2 MB in the beginning and 28.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:24:50,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.52 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 23.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:24:50,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 46.1 MB. Free memory was 23.8 MB in the beginning and 22.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:24:50,624 INFO L168 Benchmark]: Boogie Preprocessor took 31.23 ms. Allocated memory is still 46.1 MB. Free memory was 22.2 MB in the beginning and 21.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:24:50,625 INFO L168 Benchmark]: RCFGBuilder took 392.40 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 28.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:24:50,626 INFO L168 Benchmark]: TraceAbstraction took 2084.60 ms. Allocated memory is still 56.6 MB. Free memory was 27.8 MB in the beginning and 26.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:24:50,627 INFO L168 Benchmark]: Witness Printer took 71.39 ms. Allocated memory is still 56.6 MB. Free memory was 26.5 MB in the beginning and 23.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:24:50,632 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 46.1 MB. Free memory was 28.2 MB in the beginning and 28.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.52 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 23.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 46.1 MB. Free memory was 23.8 MB in the beginning and 22.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.23 ms. Allocated memory is still 46.1 MB. Free memory was 22.2 MB in the beginning and 21.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 392.40 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 28.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2084.60 ms. Allocated memory is still 56.6 MB. Free memory was 27.8 MB in the beginning and 26.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 71.39 ms. Allocated memory is still 56.6 MB. Free memory was 26.5 MB in the beginning and 23.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=2] [L31] COND TRUE i