./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/res2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/res2f.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 d4908701bc858db819ac584f6da9ed504c4033b1 ........................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 17:13:31,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 17:13:31,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 17:13:31,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 17:13:31,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 17:13:31,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 17:13:31,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 17:13:31,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 17:13:31,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 17:13:31,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 17:13:31,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 17:13:31,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 17:13:31,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 17:13:31,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 17:13:31,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 17:13:31,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 17:13:31,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 17:13:31,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 17:13:31,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 17:13:31,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 17:13:31,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 17:13:31,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 17:13:31,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 17:13:31,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 17:13:31,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 17:13:31,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 17:13:31,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 17:13:31,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 17:13:31,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 17:13:31,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 17:13:31,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 17:13:31,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 17:13:31,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 17:13:31,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 17:13:31,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 17:13:31,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 17:13:31,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 17:13:31,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 17:13:31,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 17:13:31,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 17:13:31,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 17:13:31,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 17:13:31,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 17:13:31,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 17:13:31,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 17:13:31,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 17:13:31,861 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 17:13:31,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 17:13:31,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 17:13:31,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 17:13:31,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 17:13:31,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 17:13:31,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 17:13:31,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 17:13:31,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 17:13:31,863 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 17:13:31,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 17:13:31,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 17:13:31,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 17:13:31,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 17:13:31,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 17:13:31,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 17:13:31,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 17:13:31,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 17:13:31,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 17:13:31,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 17:13:31,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 17:13:31,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 17:13:31,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 17:13:31,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 17:13:31,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4908701bc858db819ac584f6da9ed504c4033b1 [2021-07-04 17:13:32,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 17:13:32,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 17:13:32,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 17:13:32,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 17:13:32,123 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 17:13:32,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/res2f.c [2021-07-04 17:13:32,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616f600c6/b322f2e33d7749149c52575565ebc8aa/FLAG255db782d [2021-07-04 17:13:32,512 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 17:13:32,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2f.c [2021-07-04 17:13:32,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616f600c6/b322f2e33d7749149c52575565ebc8aa/FLAG255db782d [2021-07-04 17:13:32,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616f600c6/b322f2e33d7749149c52575565ebc8aa [2021-07-04 17:13:32,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 17:13:32,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 17:13:32,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 17:13:32,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 17:13:32,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 17:13:32,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 05:13:32" (1/1) ... [2021-07-04 17:13:32,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb28f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:32, skipping insertion in model container [2021-07-04 17:13:32,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 05:13:32" (1/1) ... [2021-07-04 17:13:32,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 17:13:32,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 17:13:33,050 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2f.c[588,601] [2021-07-04 17:13:33,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 17:13:33,071 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 17:13:33,102 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2f.c[588,601] [2021-07-04 17:13:33,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 17:13:33,126 INFO L208 MainTranslator]: Completed translation [2021-07-04 17:13:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33 WrapperNode [2021-07-04 17:13:33,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 17:13:33,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 17:13:33,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 17:13:33,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 17:13:33,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 17:13:33,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 17:13:33,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 17:13:33,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 17:13:33,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 17:13:33,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 17:13:33,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 17:13:33,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 17:13:33,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (1/1) ... [2021-07-04 17:13:33,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 17:13:33,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 17:13:33,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-04 17:13:33,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-04 17:13:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 17:13:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 17:13:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-04 17:13:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-04 17:13:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 17:13:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 17:13:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-04 17:13:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-04 17:13:33,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 17:13:33,563 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-07-04 17:13:33,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 05:13:33 BoogieIcfgContainer [2021-07-04 17:13:33,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 17:13:33,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 17:13:33,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 17:13:33,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 17:13:33,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 05:13:32" (1/3) ... [2021-07-04 17:13:33,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b49a836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 05:13:33, skipping insertion in model container [2021-07-04 17:13:33,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 05:13:33" (2/3) ... [2021-07-04 17:13:33,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b49a836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 05:13:33, skipping insertion in model container [2021-07-04 17:13:33,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 05:13:33" (3/3) ... [2021-07-04 17:13:33,570 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2021-07-04 17:13:33,575 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 17:13:33,577 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 17:13:33,604 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 17:13:33,608 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 17:13:33,609 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 17:13:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-04 17:13:33,621 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 17:13:33,621 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 17:13:33,622 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 17:13:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 17:13:33,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2021-07-04 17:13:33,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 17:13:33,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114119204] [2021-07-04 17:13:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 17:13:33,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 17:13:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 17:13:33,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:13:33,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 17:13:33,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:13:33,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 17:13:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 17:13:33,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 17:13:33,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114119204] [2021-07-04 17:13:33,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114119204] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 17:13:33,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 17:13:33,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-04 17:13:33,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848828236] [2021-07-04 17:13:33,726 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-04 17:13:33,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 17:13:33,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-04 17:13:33,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 17:13:33,735 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 17:13:33,744 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2021-07-04 17:13:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-04 17:13:33,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-07-04 17:13:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 17:13:33,749 INFO L225 Difference]: With dead ends: 56 [2021-07-04 17:13:33,749 INFO L226 Difference]: Without dead ends: 26 [2021-07-04 17:13:33,751 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 17:13:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-07-04 17:13:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-07-04 17:13:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-07-04 17:13:33,769 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2021-07-04 17:13:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 17:13:33,769 INFO L442 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-07-04 17:13:33,769 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-07-04 17:13:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-04 17:13:33,770 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 17:13:33,770 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 17:13:33,770 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 17:13:33,770 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 17:13:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 17:13:33,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2021-07-04 17:13:33,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 17:13:33,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093362839] [2021-07-04 17:13:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 17:13:33,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 17:13:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 17:13:33,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:13:33,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 17:13:33,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:13:33,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 17:13:33,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:13:33,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-04 17:13:33,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 17:13:33,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 17:13:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 17:13:33,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 17:13:33,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093362839] [2021-07-04 17:13:33,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093362839] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 17:13:33,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 17:13:33,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-04 17:13:33,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852093729] [2021-07-04 17:13:33,865 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-04 17:13:33,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 17:13:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-04 17:13:33,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-04 17:13:33,866 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 17:13:33,962 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-07-04 17:13:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-04 17:13:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-07-04 17:13:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 17:13:33,965 INFO L225 Difference]: With dead ends: 57 [2021-07-04 17:13:33,965 INFO L226 Difference]: Without dead ends: 38 [2021-07-04 17:13:33,966 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-04 17:13:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-07-04 17:13:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2021-07-04 17:13:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-07-04 17:13:33,976 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2021-07-04 17:13:33,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 17:13:33,976 INFO L442 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-07-04 17:13:33,976 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 17:13:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-07-04 17:13:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-04 17:13:33,977 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 17:13:33,978 INFO L525 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, 1, 1, 1] [2021-07-04 17:13:33,980 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 17:13:33,980 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 17:13:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 17:13:33,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2021-07-04 17:13:33,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 17:13:33,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704733553] [2021-07-04 17:13:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 17:13:33,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 17:13:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 17:13:34,062 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 17:13:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 17:13:34,117 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 17:13:34,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 17:13:34,143 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 17:13:34,147 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-04 17:13:34,147 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 17:13:34,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 05:13:34 BoogieIcfgContainer [2021-07-04 17:13:34,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 17:13:34,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 17:13:34,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 17:13:34,200 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 17:13:34,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 05:13:33" (3/4) ... [2021-07-04 17:13:34,202 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 17:13:34,229 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 17:13:34,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 17:13:34,230 INFO L168 Benchmark]: Toolchain (without parser) took 1276.47 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 48.1 MB in the beginning and 45.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-07-04 17:13:34,230 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 17:13:34,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.19 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 50.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-04 17:13:34,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.59 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 48.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 17:13:34,231 INFO L168 Benchmark]: Boogie Preprocessor took 20.47 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 47.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 17:13:34,232 INFO L168 Benchmark]: RCFGBuilder took 385.54 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.5 MB in the beginning and 63.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-07-04 17:13:34,232 INFO L168 Benchmark]: TraceAbstraction took 634.22 ms. Allocated memory is still 81.8 MB. Free memory was 62.5 MB in the beginning and 49.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-07-04 17:13:34,232 INFO L168 Benchmark]: Witness Printer took 29.54 ms. Allocated memory is still 81.8 MB. Free memory was 49.4 MB in the beginning and 45.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 17:13:34,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 172.19 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 50.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.59 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 48.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.47 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 47.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.54 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.5 MB in the beginning and 63.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 634.22 ms. Allocated memory is still 81.8 MB. Free memory was 62.5 MB in the beginning and 49.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 29.54 ms. Allocated memory is still 81.8 MB. Free memory was 49.4 MB in the beginning and 45.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 1 [L34] i=0 VAL [N=1] [L34] COND TRUE i