./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sqmf.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/sqmf.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 fecc72cfd370488916dec9e886b2adb7be87af7f .................................................................................................................................................................................................................................................................................................................. 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 02:47:49,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 02:47:49,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 02:47:49,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 02:47:49,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 02:47:49,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 02:47:49,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 02:47:49,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 02:47:49,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 02:47:49,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 02:47:49,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 02:47:49,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 02:47:49,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 02:47:49,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 02:47:49,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 02:47:49,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 02:47:49,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 02:47:49,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 02:47:49,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 02:47:49,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 02:47:49,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 02:47:49,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 02:47:49,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 02:47:49,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 02:47:49,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 02:47:49,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 02:47:49,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 02:47:49,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 02:47:49,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 02:47:49,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 02:47:49,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 02:47:49,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 02:47:49,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 02:47:49,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 02:47:49,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 02:47:49,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 02:47:49,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 02:47:49,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 02:47:49,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 02:47:49,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 02:47:49,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 02:47:49,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 02:47:49,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 02:47:49,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 02:47:49,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 02:47:49,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 02:47:49,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 02:47:49,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 02:47:49,161 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 02:47:49,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 02:47:49,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 02:47:49,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 02:47:49,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 02:47:49,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 02:47:49,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 02:47:49,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 02:47:49,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 02:47:49,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 02:47:49,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 02:47:49,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 02:47:49,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 02:47:49,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 02:47:49,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 02:47:49,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 02:47:49,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 02:47:49,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fecc72cfd370488916dec9e886b2adb7be87af7f [2021-08-29 02:47:49,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 02:47:49,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 02:47:49,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 02:47:49,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 02:47:49,506 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 02:47:49,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sqmf.c [2021-08-29 02:47:49,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad741e15a/1d9434364649479581aa640caa559567/FLAGa50710e65 [2021-08-29 02:47:50,038 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 02:47:50,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sqmf.c [2021-08-29 02:47:50,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad741e15a/1d9434364649479581aa640caa559567/FLAGa50710e65 [2021-08-29 02:47:50,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad741e15a/1d9434364649479581aa640caa559567 [2021-08-29 02:47:50,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 02:47:50,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 02:47:50,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 02:47:50,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 02:47:50,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 02:47:50,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f26d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50, skipping insertion in model container [2021-08-29 02:47:50,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 02:47:50,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 02:47:50,583 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/sqmf.c[587,600] [2021-08-29 02:47:50,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 02:47:50,606 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 02:47:50,629 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/sqmf.c[587,600] [2021-08-29 02:47:50,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 02:47:50,670 INFO L208 MainTranslator]: Completed translation [2021-08-29 02:47:50,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50 WrapperNode [2021-08-29 02:47:50,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 02:47:50,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 02:47:50,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 02:47:50,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 02:47:50,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 02:47:50,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 02:47:50,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 02:47:50,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 02:47:50,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 02:47:50,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 02:47:50,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 02:47:50,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 02:47:50,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (1/1) ... [2021-08-29 02:47:50,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 02:47:50,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:47:50,754 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 02:47:50,767 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 02:47:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 02:47:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 02:47:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 02:47:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 02:47:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 02:47:50,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 02:47:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 02:47:51,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 02:47:51,028 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-29 02:47:51,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:47:51 BoogieIcfgContainer [2021-08-29 02:47:51,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 02:47:51,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 02:47:51,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 02:47:51,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 02:47:51,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:47:50" (1/3) ... [2021-08-29 02:47:51,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a92a3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:47:51, skipping insertion in model container [2021-08-29 02:47:51,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:50" (2/3) ... [2021-08-29 02:47:51,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a92a3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:47:51, skipping insertion in model container [2021-08-29 02:47:51,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:47:51" (3/3) ... [2021-08-29 02:47:51,037 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c [2021-08-29 02:47:51,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 02:47:51,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 02:47:51,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 02:47:51,112 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 02:47:51,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 02:47:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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 02:47:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 02:47:51,135 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:47:51,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:47:51,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:47:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:47:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-08-29 02:47:51,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:47:51,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340042084] [2021-08-29 02:47:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:47:51,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:47:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:47:51,341 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 02:47:51,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:47:51,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340042084] [2021-08-29 02:47:51,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340042084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 02:47:51,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 02:47:51,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 02:47:51,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068914915] [2021-08-29 02:47:51,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 02:47:51,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:47:51,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 02:47:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 02:47:51,384 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) 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 02:47:51,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:47:51,455 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-08-29 02:47:51,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 02:47:51,463 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 02:47:51,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:47:51,472 INFO L225 Difference]: With dead ends: 38 [2021-08-29 02:47:51,473 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 02:47:51,475 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 02:47:51,479 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.81ms IncrementalHoareTripleChecker+Time [2021-08-29 02:47:51,482 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 57.81ms Time] [2021-08-29 02:47:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 02:47:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 02:47:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 02:47:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-08-29 02:47:51,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-08-29 02:47:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:47:51,511 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-08-29 02:47:51,512 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 02:47:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-08-29 02:47:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 02:47:51,513 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:47:51,513 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:47:51,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 02:47:51,514 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:47:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:47:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-08-29 02:47:51,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:47:51,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416673772] [2021-08-29 02:47:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:47:51,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:47:51,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 02:47:51,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027567842] [2021-08-29 02:47:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:47:51,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:47:51,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:47:51,559 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 02:47:51,561 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 02:47:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 02:47:51,611 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 02:47:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 02:47:51,647 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 02:47:51,647 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 02:47:51,649 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 02:47:51,681 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 02:47:51,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:47:51,881 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 02:47:51,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 02:47:51 BoogieIcfgContainer [2021-08-29 02:47:51,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 02:47:51,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 02:47:51,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 02:47:51,906 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 02:47:51,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:47:51" (3/4) ... [2021-08-29 02:47:51,908 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 02:47:51,939 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 02:47:51,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 02:47:51,939 INFO L158 Benchmark]: Toolchain (without parser) took 1489.12ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.2MB in the beginning and 37.3MB in the end (delta: -2.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-08-29 02:47:51,940 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory was 37.6MB in the beginning and 37.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:47:51,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.94ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 39.9MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 02:47:51,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.45ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 37.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:47:51,941 INFO L158 Benchmark]: Boogie Preprocessor took 20.59ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 36.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 02:47:51,941 INFO L158 Benchmark]: RCFGBuilder took 307.09ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 27.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 02:47:51,942 INFO L158 Benchmark]: TraceAbstraction took 872.92ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 26.6MB in the beginning and 39.6MB in the end (delta: -13.1MB). Peak memory consumption was 70.6kB. Max. memory is 16.1GB. [2021-08-29 02:47:51,942 INFO L158 Benchmark]: Witness Printer took 33.64ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 37.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 02:47:51,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory was 37.6MB in the beginning and 37.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.94ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 39.9MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.45ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 37.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.59ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 36.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.09ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 27.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 872.92ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 26.6MB in the beginning and 39.6MB in the end (delta: -13.1MB). Peak memory consumption was 70.6kB. Max. memory is 16.1GB. * Witness Printer took 33.64ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 37.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. 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=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 0 [L32] a[0] = 0 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i