./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e365d1f7c546788b4f6c8f402c5031aacc4ea6e6 .......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:04:48,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:04:48,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:04:48,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:04:48,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:04:48,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:04:48,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:04:48,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:04:48,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:04:48,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:04:48,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:04:48,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:04:48,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:04:48,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:04:48,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:04:48,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:04:48,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:04:48,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:04:48,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:04:48,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:04:48,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:04:48,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:04:48,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:04:48,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:04:48,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:04:48,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:04:48,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:04:48,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:04:48,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:04:48,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:04:48,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:04:48,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:04:48,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:04:48,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:04:48,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:04:48,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:04:48,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:04:48,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:04:48,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:04:48,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:04:48,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:04:48,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:04:48,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:04:48,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:04:48,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:04:48,146 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:04:48,146 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:04:48,146 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:04:48,147 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:04:48,147 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:04:48,147 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:04:48,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:04:48,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:04:48,147 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:04:48,148 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:04:48,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:04:48,148 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:04:48,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:04:48,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:04:48,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:04:48,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:04:48,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:04:48,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:04:48,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:04:48,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:04:48,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:04:48,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:04:48,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:04:48,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:04:48,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:04:48,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:04:48,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:04:48,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:04:48,152 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e365d1f7c546788b4f6c8f402c5031aacc4ea6e6 [2020-12-09 10:04:48,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:04:48,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:04:48,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:04:48,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:04:48,373 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:04:48,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2020-12-09 10:04:48,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/data/fc3e9f0a4/c67335a8d18f439d94e889e528842231/FLAG0dd16e066 [2020-12-09 10:04:48,781 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:04:48,781 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2020-12-09 10:04:48,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/data/fc3e9f0a4/c67335a8d18f439d94e889e528842231/FLAG0dd16e066 [2020-12-09 10:04:48,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/data/fc3e9f0a4/c67335a8d18f439d94e889e528842231 [2020-12-09 10:04:48,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:04:48,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:04:48,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:04:48,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:04:48,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:04:48,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:48,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1e9afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48, skipping insertion in model container [2020-12-09 10:04:48,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:48,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:04:48,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:04:48,922 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i[825,838] [2020-12-09 10:04:48,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:04:48,943 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:04:48,955 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i[825,838] [2020-12-09 10:04:48,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:04:48,968 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:04:48,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48 WrapperNode [2020-12-09 10:04:48,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:04:48,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:04:48,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:04:48,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:04:48,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:48,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:48,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:04:48,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:04:48,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:04:48,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:04:48,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:48,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:49,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:49,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:49,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:49,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:49,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... [2020-12-09 10:04:49,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:04:49,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:04:49,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:04:49,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:04:49,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:04:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:04:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:04:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 10:04:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:04:49,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:04:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:04:49,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:04:49,254 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-09 10:04:49,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:04:49 BoogieIcfgContainer [2020-12-09 10:04:49,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:04:49,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:04:49,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:04:49,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:04:49,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:04:48" (1/3) ... [2020-12-09 10:04:49,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5200920d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:04:49, skipping insertion in model container [2020-12-09 10:04:49,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:04:48" (2/3) ... [2020-12-09 10:04:49,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5200920d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:04:49, skipping insertion in model container [2020-12-09 10:04:49,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:04:49" (3/3) ... [2020-12-09 10:04:49,261 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-12-09 10:04:49,270 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:04:49,273 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:04:49,280 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:04:49,296 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:04:49,296 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:04:49,296 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:04:49,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:04:49,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:04:49,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:04:49,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:04:49,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:04:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-09 10:04:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 10:04:49,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:04:49,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 10:04:49,308 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:04:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:04:49,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1916652, now seen corresponding path program 1 times [2020-12-09 10:04:49,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:04:49,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980627873] [2020-12-09 10:04:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:04:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:04:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:04:49,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980627873] [2020-12-09 10:04:49,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:04:49,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:04:49,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293736147] [2020-12-09 10:04:49,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:04:49,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:04:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:04:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:04:49,487 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2020-12-09 10:04:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:04:49,531 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-12-09 10:04:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:04:49,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 10:04:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:04:49,541 INFO L225 Difference]: With dead ends: 17 [2020-12-09 10:04:49,541 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 10:04:49,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:04:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 10:04:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-12-09 10:04:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 10:04:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 10:04:49,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2020-12-09 10:04:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:04:49,572 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 10:04:49,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:04:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 10:04:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:04:49,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:04:49,573 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-09 10:04:49,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:04:49,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:04:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:04:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1269628337, now seen corresponding path program 1 times [2020-12-09 10:04:49,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:04:49,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156750122] [2020-12-09 10:04:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:04:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:04:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:04:49,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156750122] [2020-12-09 10:04:49,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935721467] [2020-12-09 10:04:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:04:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:04:49,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 10:04:49,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:04:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:04:49,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:04:49,784 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:04:49,792 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:04:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:04:49,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166187942] [2020-12-09 10:04:49,818 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 10:04:49,819 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 10:04:49,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 10:04:49,827 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 10:04:49,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 10:04:50,016 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 10:04:50,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 10:04:50,445 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 10:04:50,625 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-12-09 10:04:51,288 WARN L197 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 113 [2020-12-09 10:04:52,131 WARN L197 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 121 [2020-12-09 10:04:52,271 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-12-09 10:04:52,273 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:04:52,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 10:04:52,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2020-12-09 10:04:52,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177046518] [2020-12-09 10:04:52,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:04:52,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:04:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:04:52,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:04:52,276 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2020-12-09 10:04:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:04:52,319 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-12-09 10:04:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:04:52,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-12-09 10:04:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:04:52,319 INFO L225 Difference]: With dead ends: 15 [2020-12-09 10:04:52,319 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 10:04:52,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-09 10:04:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 10:04:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-12-09 10:04:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 10:04:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-09 10:04:52,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-12-09 10:04:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:04:52,323 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-09 10:04:52,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:04:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-09 10:04:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:04:52,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:04:52,323 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-12-09 10:04:52,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 10:04:52,525 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:04:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:04:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2021002444, now seen corresponding path program 2 times [2020-12-09 10:04:52,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:04:52,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996747117] [2020-12-09 10:04:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:04:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:04:52,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:04:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:04:52,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:04:52,579 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 10:04:52,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 10:04:52,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-09 10:04:52,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:04:52 BoogieIcfgContainer [2020-12-09 10:04:52,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:04:52,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:04:52,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:04:52,601 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:04:52,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:04:49" (3/4) ... [2020-12-09 10:04:52,602 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 10:04:52,632 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dcbb0691-7d9a-490f-9620-f3338a7d3447/bin/utaipan/witness.graphml [2020-12-09 10:04:52,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:04:52,633 INFO L168 Benchmark]: Toolchain (without parser) took 3828.48 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 67.6 MB in the beginning and 55.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:04:52,633 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:04:52,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.60 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 58.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:04:52,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 56.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:04:52,634 INFO L168 Benchmark]: Boogie Preprocessor took 15.54 ms. Allocated memory is still 88.1 MB. Free memory was 56.5 MB in the beginning and 55.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:04:52,635 INFO L168 Benchmark]: RCFGBuilder took 246.81 ms. Allocated memory is still 88.1 MB. Free memory was 55.3 MB in the beginning and 55.6 MB in the end (delta: -347.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:04:52,635 INFO L168 Benchmark]: TraceAbstraction took 3343.83 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 55.3 MB in the beginning and 58.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:04:52,635 INFO L168 Benchmark]: Witness Printer took 31.62 ms. Allocated memory is still 142.6 MB. Free memory was 58.7 MB in the beginning and 55.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:04:52,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.60 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 58.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 56.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.54 ms. Allocated memory is still 88.1 MB. Free memory was 56.5 MB in the beginning and 55.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 246.81 ms. Allocated memory is still 88.1 MB. Free memory was 55.3 MB in the beginning and 55.6 MB in the end (delta: -347.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3343.83 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 55.3 MB in the beginning and 58.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. * Witness Printer took 31.62 ms. Allocated memory is still 142.6 MB. Free memory was 58.7 MB in the beginning and 55.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] Char *tmp; [L40] Char pathbuf[1 +1]; [L42] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L44] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L27] Char *p; [L29] p = pathbuf VAL [tmp={5:4}] [L29] COND TRUE p <= pathlim [L15] COND FALSE !(!(cond)) VAL [tmp={5:4}] [L32] *p = 1 [L29] p++ VAL [tmp={5:4}] [L29] COND TRUE p <= pathlim [L15] COND FALSE !(!(cond)) VAL [tmp={5:4}] [L32] *p = 1 [L29] p++ VAL [tmp={5:4}] [L29] COND TRUE p <= pathlim [L15] COND TRUE !(cond) VAL [tmp={5:4}] [L16] reach_error() VAL [tmp={5:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 14 SDslu, 13 SDs, 0 SdLazy, 25 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 753 SizeOfPredicates, 11 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...