./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/ifeqn4f.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 eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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.seqcomp-5fbdf5b [2021-08-29 02:03:26,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 02:03:26,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 02:03:26,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 02:03:26,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 02:03:26,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 02:03:26,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 02:03:26,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 02:03:26,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 02:03:26,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 02:03:26,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 02:03:26,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 02:03:26,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 02:03:26,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 02:03:26,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 02:03:26,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 02:03:26,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 02:03:26,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 02:03:26,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 02:03:26,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 02:03:26,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 02:03:26,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 02:03:26,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 02:03:26,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 02:03:26,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 02:03:26,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 02:03:26,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 02:03:26,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 02:03:26,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 02:03:26,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 02:03:26,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 02:03:26,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 02:03:26,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 02:03:26,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 02:03:26,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 02:03:26,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 02:03:26,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 02:03:26,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 02:03:26,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 02:03:26,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 02:03:26,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 02:03:26,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 02:03:26,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 02:03:26,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 02:03:26,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 02:03:26,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 02:03:26,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 02:03:26,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 02:03:26,844 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 02:03:26,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 02:03:26,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 02:03:26,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 02:03:26,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 02:03:26,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 02:03:26,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 02:03:26,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 02:03:26,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 02:03:26,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 02:03:26,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 02:03:26,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 02:03:26,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 02:03:26,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 02:03:26,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 02:03:26,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 02:03:26,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 02:03:26,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 02:03:26,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 02:03:26,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 02:03:26,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 02:03:26,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 02:03:26,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 02:03:26,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 02:03:26,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 [2021-08-29 02:03:27,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 02:03:27,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 02:03:27,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 02:03:27,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 02:03:27,113 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 02:03:27,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn4f.c [2021-08-29 02:03:27,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fec6e519/3a80af2001c84b13b679477bf7e10a55/FLAGa3b34d5b8 [2021-08-29 02:03:27,537 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 02:03:27,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn4f.c [2021-08-29 02:03:27,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fec6e519/3a80af2001c84b13b679477bf7e10a55/FLAGa3b34d5b8 [2021-08-29 02:03:27,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fec6e519/3a80af2001c84b13b679477bf7e10a55 [2021-08-29 02:03:27,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 02:03:27,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 02:03:27,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 02:03:27,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 02:03:27,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 02:03:27,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9ab483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27, skipping insertion in model container [2021-08-29 02:03:27,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 02:03:27,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 02:03:27,672 WARN L228 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/ifeqn4f.c[590,603] [2021-08-29 02:03:27,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 02:03:27,702 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 02:03:27,711 WARN L228 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/ifeqn4f.c[590,603] [2021-08-29 02:03:27,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 02:03:27,769 INFO L208 MainTranslator]: Completed translation [2021-08-29 02:03:27,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27 WrapperNode [2021-08-29 02:03:27,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 02:03:27,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 02:03:27,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 02:03:27,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 02:03:27,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 02:03:27,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 02:03:27,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 02:03:27,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 02:03:27,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 02:03:27,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 02:03:27,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 02:03:27,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 02:03:27,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (1/1) ... [2021-08-29 02:03:27,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 02:03:27,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:03:27,860 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) [2021-08-29 02:03:27,865 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 [2021-08-29 02:03:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 02:03:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 02:03:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 02:03:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 02:03:27,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 02:03:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 02:03:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 02:03:28,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 02:03:28,076 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-29 02:03:28,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:03:28 BoogieIcfgContainer [2021-08-29 02:03:28,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 02:03:28,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 02:03:28,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 02:03:28,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 02:03:28,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:03:27" (1/3) ... [2021-08-29 02:03:28,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfda5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:03:28, skipping insertion in model container [2021-08-29 02:03:28,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:03:27" (2/3) ... [2021-08-29 02:03:28,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfda5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:03:28, skipping insertion in model container [2021-08-29 02:03:28,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:03:28" (3/3) ... [2021-08-29 02:03:28,084 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2021-08-29 02:03:28,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 02:03:28,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 02:03:28,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 02:03:28,140 INFO L339 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, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 02:03:28,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 02:03:28,151 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) [2021-08-29 02:03:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 02:03:28,156 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:03:28,157 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:03:28,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:03:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:03:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-08-29 02:03:28,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:03:28,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080746562] [2021-08-29 02:03:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:28,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:03:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:03:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:03:28,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:03:28,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080746562] [2021-08-29 02:03:28,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080746562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 02:03:28,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 02:03:28,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 02:03:28,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837770391] [2021-08-29 02:03:28,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 02:03:28,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:03:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 02:03:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 02:03:28,353 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) [2021-08-29 02:03:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:03:28,421 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-08-29 02:03:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 02:03:28,423 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 [2021-08-29 02:03:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:03:28,428 INFO L225 Difference]: With dead ends: 42 [2021-08-29 02:03:28,428 INFO L226 Difference]: Without dead ends: 19 [2021-08-29 02:03:28,430 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 02:03:28,432 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.78ms IncrementalHoareTripleChecker+Time [2021-08-29 02:03:28,432 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 57.78ms Time] [2021-08-29 02:03:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-29 02:03:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-29 02:03:28,456 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) [2021-08-29 02:03:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-08-29 02:03:28,458 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-08-29 02:03:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:03:28,458 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-08-29 02:03:28,458 INFO L471 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) [2021-08-29 02:03:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-08-29 02:03:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 02:03:28,459 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:03:28,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:03:28,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 02:03:28,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:03:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:03:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-08-29 02:03:28,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:03:28,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778325432] [2021-08-29 02:03:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:28,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:03:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:03:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:03:28,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:03:28,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778325432] [2021-08-29 02:03:28,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778325432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 02:03:28,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 02:03:28,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 02:03:28,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880277022] [2021-08-29 02:03:28,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 02:03:28,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:03:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 02:03:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 02:03:28,552 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) [2021-08-29 02:03:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:03:28,622 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-08-29 02:03:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 02:03:28,623 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 [2021-08-29 02:03:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:03:28,625 INFO L225 Difference]: With dead ends: 45 [2021-08-29 02:03:28,625 INFO L226 Difference]: Without dead ends: 31 [2021-08-29 02:03:28,628 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.42ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 02:03:28,629 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.35ms IncrementalHoareTripleChecker+Time [2021-08-29 02:03:28,630 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 56.35ms Time] [2021-08-29 02:03:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-29 02:03:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-08-29 02:03:28,639 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) [2021-08-29 02:03:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-08-29 02:03:28,641 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-08-29 02:03:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:03:28,641 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-08-29 02:03:28,641 INFO L471 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) [2021-08-29 02:03:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-08-29 02:03:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 02:03:28,642 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:03:28,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:03:28,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 02:03:28,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:03:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:03:28,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-08-29 02:03:28,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:03:28,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451682675] [2021-08-29 02:03:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:28,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:03:28,676 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 02:03:28,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478190708] [2021-08-29 02:03:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:28,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:03:28,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:03:28,679 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) [2021-08-29 02:03:28,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 02:03:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:03:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 02:03:28,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 02:03:28,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 02:03:28,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 02:03:28,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 02:03:28,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:03:28,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451682675] [2021-08-29 02:03:28,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 02:03:28,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478190708] [2021-08-29 02:03:28,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478190708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 02:03:28,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 02:03:28,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 02:03:28,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096335329] [2021-08-29 02:03:28,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 02:03:28,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:03:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 02:03:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 02:03:28,967 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-08-29 02:03:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:03:29,047 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-08-29 02:03:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 02:03:29,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-08-29 02:03:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:03:29,049 INFO L225 Difference]: With dead ends: 31 [2021-08-29 02:03:29,049 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 02:03:29,050 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.49ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-29 02:03:29,052 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.12ms IncrementalHoareTripleChecker+Time [2021-08-29 02:03:29,053 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 51.12ms Time] [2021-08-29 02:03:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 02:03:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-08-29 02:03:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-08-29 02:03:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-08-29 02:03:29,062 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2021-08-29 02:03:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:03:29,062 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-08-29 02:03:29,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-08-29 02:03:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-08-29 02:03:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 02:03:29,064 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:03:29,064 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:03:29,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 02:03:29,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:03:29,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:03:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:03:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash -748772581, now seen corresponding path program 1 times [2021-08-29 02:03:29,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:03:29,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304566052] [2021-08-29 02:03:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:29,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:03:29,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 02:03:29,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185122900] [2021-08-29 02:03:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:29,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:03:29,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:03:29,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 02:03:29,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 02:03:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:03:29,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 02:03:29,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 02:03:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 02:03:29,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 02:03:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 02:03:29,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:03:29,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304566052] [2021-08-29 02:03:29,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 02:03:29,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185122900] [2021-08-29 02:03:29,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185122900] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 02:03:29,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 02:03:29,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-08-29 02:03:29,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624060883] [2021-08-29 02:03:29,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 02:03:29,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:03:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 02:03:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-29 02:03:29,490 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-08-29 02:03:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:03:29,601 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2021-08-29 02:03:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 02:03:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 22 [2021-08-29 02:03:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:03:29,604 INFO L225 Difference]: With dead ends: 65 [2021-08-29 02:03:29,604 INFO L226 Difference]: Without dead ends: 41 [2021-08-29 02:03:29,605 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 39.27ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-29 02:03:29,607 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.38ms IncrementalHoareTripleChecker+Time [2021-08-29 02:03:29,608 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 157 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [36 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 78.38ms Time] [2021-08-29 02:03:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-29 02:03:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2021-08-29 02:03:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 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) [2021-08-29 02:03:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-08-29 02:03:29,616 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2021-08-29 02:03:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:03:29,616 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-08-29 02:03:29,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-08-29 02:03:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-08-29 02:03:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-29 02:03:29,617 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:03:29,617 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:03:29,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 02:03:29,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-29 02:03:29,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:03:29,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:03:29,838 INFO L82 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-08-29 02:03:29,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:03:29,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104686120] [2021-08-29 02:03:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:29,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:03:29,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 02:03:29,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963454787] [2021-08-29 02:03:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:03:29,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:03:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:03:29,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 02:03:29,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 02:03:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 02:03:29,902 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 02:03:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 02:03:29,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 02:03:29,980 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 02:03:29,981 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 02:03:30,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 02:03:30,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:03:30,187 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 02:03:30,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 02:03:30 BoogieIcfgContainer [2021-08-29 02:03:30,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 02:03:30,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 02:03:30,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 02:03:30,221 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 02:03:30,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:03:28" (3/4) ... [2021-08-29 02:03:30,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 02:03:30,261 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 02:03:30,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 02:03:30,262 INFO L158 Benchmark]: Toolchain (without parser) took 2700.97ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.4MB in the beginning and 28.1MB in the end (delta: 17.2MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2021-08-29 02:03:30,262 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:03:30,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.03ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 48.6MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 02:03:30,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.17ms. Allocated memory is still 65.0MB. Free memory was 48.3MB in the beginning and 46.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:03:30,262 INFO L158 Benchmark]: Boogie Preprocessor took 29.28ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 45.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:03:30,262 INFO L158 Benchmark]: RCFGBuilder took 238.17ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 36.1MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 02:03:30,262 INFO L158 Benchmark]: TraceAbstraction took 2140.54ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.7MB in the beginning and 31.4MB in the end (delta: 4.2MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-08-29 02:03:30,263 INFO L158 Benchmark]: Witness Printer took 40.84ms. Allocated memory is still 79.7MB. Free memory was 31.4MB in the beginning and 28.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 02:03:30,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.03ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 48.6MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.17ms. Allocated memory is still 65.0MB. Free memory was 48.3MB in the beginning and 46.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.28ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 45.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 238.17ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 36.1MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2140.54ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.7MB in the beginning and 31.4MB in the end (delta: 4.2MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 40.84ms. Allocated memory is still 79.7MB. Free memory was 31.4MB in the beginning and 28.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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=2] [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=2] [L31] COND TRUE i