./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn2f.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/ifeqn2f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21b475462fcf81a6a340c34270a285fecf0d0ad8 ............................................................................................................................................................................................................................................................................................................................................................................... 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 16:47:46,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 16:47:46,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 16:47:46,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 16:47:46,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 16:47:46,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 16:47:46,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 16:47:46,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 16:47:46,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 16:47:46,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 16:47:46,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 16:47:46,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 16:47:46,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 16:47:46,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 16:47:46,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 16:47:46,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 16:47:46,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 16:47:46,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 16:47:46,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 16:47:46,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 16:47:46,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 16:47:46,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 16:47:46,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 16:47:46,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 16:47:46,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 16:47:46,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 16:47:46,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 16:47:46,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 16:47:46,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 16:47:46,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 16:47:46,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 16:47:46,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 16:47:46,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 16:47:46,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 16:47:46,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 16:47:46,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 16:47:46,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 16:47:46,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 16:47:46,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 16:47:46,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 16:47:46,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 16:47:46,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 16:47:46,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 16:47:46,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 16:47:46,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 16:47:46,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 16:47:46,749 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 16:47:46,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 16:47:46,750 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 16:47:46,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 16:47:46,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 16:47:46,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 16:47:46,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 16:47:46,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 16:47:46,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 16:47:46,752 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 16:47:46,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 16:47:46,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 16:47:46,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 16:47:46,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 16:47:46,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 16:47:46,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 16:47:46,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 16:47:46,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 16:47:46,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 16:47:46,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 16:47:46,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 16:47:46,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 16:47:46,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 16:47:46,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 16:47:46,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21b475462fcf81a6a340c34270a285fecf0d0ad8 [2021-07-04 16:47:46,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 16:47:47,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 16:47:47,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 16:47:47,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 16:47:47,012 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 16:47:47,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn2f.c [2021-07-04 16:47:47,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9552b09e5/57e3eb8ff338439da22cb0ce8e53e6de/FLAGf749a7bbd [2021-07-04 16:47:47,461 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 16:47:47,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2f.c [2021-07-04 16:47:47,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9552b09e5/57e3eb8ff338439da22cb0ce8e53e6de/FLAGf749a7bbd [2021-07-04 16:47:47,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9552b09e5/57e3eb8ff338439da22cb0ce8e53e6de [2021-07-04 16:47:47,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 16:47:47,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 16:47:47,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 16:47:47,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 16:47:47,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 16:47:47,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d08b22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47, skipping insertion in model container [2021-07-04 16:47:47,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 16:47:47,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 16:47:47,622 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/ifeqn2f.c[590,603] [2021-07-04 16:47:47,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 16:47:47,645 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 16:47:47,656 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/ifeqn2f.c[590,603] [2021-07-04 16:47:47,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 16:47:47,683 INFO L208 MainTranslator]: Completed translation [2021-07-04 16:47:47,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47 WrapperNode [2021-07-04 16:47:47,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 16:47:47,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 16:47:47,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 16:47:47,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 16:47:47,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 16:47:47,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 16:47:47,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 16:47:47,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 16:47:47,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 16:47:47,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 16:47:47,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 16:47:47,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 16:47:47,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (1/1) ... [2021-07-04 16:47:47,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 16:47:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 16:47:47,779 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 16:47:47,804 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 16:47:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 16:47:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 16:47:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-04 16:47:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-04 16:47:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 16:47:47,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 16:47:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-04 16:47:48,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 16:47:48,079 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-07-04 16:47:48,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 04:47:48 BoogieIcfgContainer [2021-07-04 16:47:48,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 16:47:48,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 16:47:48,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 16:47:48,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 16:47:48,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 04:47:47" (1/3) ... [2021-07-04 16:47:48,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139ae932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 04:47:48, skipping insertion in model container [2021-07-04 16:47:48,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:47:47" (2/3) ... [2021-07-04 16:47:48,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139ae932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 04:47:48, skipping insertion in model container [2021-07-04 16:47:48,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 04:47:48" (3/3) ... [2021-07-04 16:47:48,085 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2021-07-04 16:47:48,090 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 16:47:48,090 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 16:47:48,117 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 16:47:48,124 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 16:47:48,125 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 16:47:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 16:47:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-04 16:47:48,139 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 16:47:48,139 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 16:47:48,139 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 16:47:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 16:47:48,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-07-04 16:47:48,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 16:47:48,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522385123] [2021-07-04 16:47:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:47:48,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 16:47:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 16:47:48,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:47:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:47:48,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:47:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:47:48,279 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 16:47:48,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 16:47:48,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522385123] [2021-07-04 16:47:48,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522385123] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 16:47:48,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 16:47:48,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-04 16:47:48,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806899898] [2021-07-04 16:47:48,285 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-04 16:47:48,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 16:47:48,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-04 16:47:48,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 16:47:48,297 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16:47:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 16:47:48,309 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-07-04 16:47:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-04 16:47:48,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-07-04 16:47:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 16:47:48,314 INFO L225 Difference]: With dead ends: 42 [2021-07-04 16:47:48,315 INFO L226 Difference]: Without dead ends: 19 [2021-07-04 16:47:48,316 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 16:47:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-07-04 16:47:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-07-04 16:47:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 16:47:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-07-04 16:47:48,336 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-07-04 16:47:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 16:47:48,337 INFO L442 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-07-04 16:47:48,337 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16:47:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-07-04 16:47:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-04 16:47:48,342 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 16:47:48,342 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 16:47:48,342 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 16:47:48,342 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 16:47:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 16:47:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-07-04 16:47:48,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 16:47:48,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304530823] [2021-07-04 16:47:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:47:48,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 16:47:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 16:47:48,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:47:48,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:47:48,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:47:48,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 16:47:48,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:47:48,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-04 16:47:48,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:47:48,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:47:48,420 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 16:47:48,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 16:47:48,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304530823] [2021-07-04 16:47:48,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304530823] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 16:47:48,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 16:47:48,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-04 16:47:48,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953104024] [2021-07-04 16:47:48,422 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-04 16:47:48,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 16:47:48,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-04 16:47:48,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-04 16:47:48,423 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 16:47:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 16:47:48,477 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-07-04 16:47:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-04 16:47:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-07-04 16:47:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 16:47:48,479 INFO L225 Difference]: With dead ends: 45 [2021-07-04 16:47:48,479 INFO L226 Difference]: Without dead ends: 31 [2021-07-04 16:47:48,479 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-04 16:47:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-07-04 16:47:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-07-04 16:47:48,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 16:47:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-07-04 16:47:48,483 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-07-04 16:47:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 16:47:48,483 INFO L442 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-07-04 16:47:48,483 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 16:47:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-07-04 16:47:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-04 16:47:48,485 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 16:47:48,485 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 16:47:48,485 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 16:47:48,486 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 16:47:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 16:47:48,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-07-04 16:47:48,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 16:47:48,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813269026] [2021-07-04 16:47:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:47:48,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 16:47:48,498 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-07-04 16:47:48,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483927017] [2021-07-04 16:47:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:47:48,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-04 16:47:48,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 16:47:48,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-04 16:47:48,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-04 16:47:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 16:47:48,571 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 16:47:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 16:47:48,585 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 16:47:48,611 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 16:47:48,611 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 16:47:48,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-04 16:47:48,833 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-04 16:47:48,833 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 16:47:48,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 04:47:48 BoogieIcfgContainer [2021-07-04 16:47:48,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 16:47:48,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 16:47:48,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 16:47:48,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 16:47:48,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 04:47:48" (3/4) ... [2021-07-04 16:47:48,861 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 16:47:48,888 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 16:47:48,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 16:47:48,889 INFO L168 Benchmark]: Toolchain (without parser) took 1402.39 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 45.4 MB in the beginning and 42.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-07-04 16:47:48,889 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 16:47:48,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.23 ms. Allocated memory is still 60.8 MB. Free memory was 45.2 MB in the beginning and 35.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-04 16:47:48,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 60.8 MB. Free memory was 35.1 MB in the beginning and 44.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-04 16:47:48,890 INFO L168 Benchmark]: Boogie Preprocessor took 26.71 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 43.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 16:47:48,891 INFO L168 Benchmark]: RCFGBuilder took 325.40 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.3 MB in the end (delta: 476.5 kB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-07-04 16:47:48,891 INFO L168 Benchmark]: TraceAbstraction took 778.21 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 42.0 MB in the beginning and 44.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-07-04 16:47:48,892 INFO L168 Benchmark]: Witness Printer took 28.32 ms. Allocated memory is still 73.4 MB. Free memory was 44.5 MB in the beginning and 42.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 16:47:48,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 195.23 ms. Allocated memory is still 60.8 MB. Free memory was 45.2 MB in the beginning and 35.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 60.8 MB. Free memory was 35.1 MB in the beginning and 44.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.71 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 43.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 325.40 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.3 MB in the end (delta: 476.5 kB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 778.21 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 42.0 MB in the beginning and 44.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 28.32 ms. Allocated memory is still 73.4 MB. Free memory was 44.5 MB in the beginning and 42.0 MB in the end (delta: 2.5 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 *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i