./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer --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 af4b28e958de4f654443dbaa4f0a24d91f735460 .................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-29 20:03:01,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:03:01,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:03:01,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:03:01,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:03:01,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:03:01,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:03:01,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:03:01,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:03:01,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:03:01,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:03:01,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:03:01,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:03:01,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:03:01,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:03:01,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:03:01,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:03:01,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:03:01,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:03:01,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:03:01,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:03:01,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:03:01,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:03:01,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:03:01,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:03:01,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:03:01,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:03:01,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:03:01,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:03:01,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:03:01,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:03:01,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:03:01,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:03:01,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:03:01,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:03:01,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:03:01,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:03:01,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:03:01,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:03:01,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:03:01,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:03:01,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:03:01,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:03:01,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:03:01,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:03:01,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:03:01,714 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:03:01,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:03:01,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:03:01,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:03:01,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:03:01,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:03:01,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:03:01,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:03:01,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:03:01,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:03:01,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:03:01,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:03:01,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:03:01,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:03:01,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:03:01,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:03:01,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:03:01,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:03:01,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:03:01,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:03:01,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:03:01,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:03:01,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:03:01,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:03:01,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:03:01,723 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:/tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4b28e958de4f654443dbaa4f0a24d91f735460 [2020-11-29 20:03:02,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:03:02,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:03:02,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:03:02,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:03:02,093 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:03:02,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-1.i [2020-11-29 20:03:02,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/data/c532529ad/9ae17cb0ffd14e56afc4ed4ded60eedb/FLAG889789ee3 [2020-11-29 20:03:02,940 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:03:02,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/sv-benchmarks/c/list-properties/simple-1.i [2020-11-29 20:03:02,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/data/c532529ad/9ae17cb0ffd14e56afc4ed4ded60eedb/FLAG889789ee3 [2020-11-29 20:03:03,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/data/c532529ad/9ae17cb0ffd14e56afc4ed4ded60eedb [2020-11-29 20:03:03,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:03:03,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:03:03,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:03:03,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:03:03,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:03:03,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:03,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6beaba70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03, skipping insertion in model container [2020-11-29 20:03:03,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:03,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:03:03,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:03:03,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:03:03,692 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:03:03,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:03:03,873 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:03:03,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03 WrapperNode [2020-11-29 20:03:03,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:03:03,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:03:03,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:03:03,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:03:03,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:03,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:03,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:03:03,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:03:03,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:03:03,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:03:03,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:03,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:03,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:04,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:04,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:04,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:04,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... [2020-11-29 20:03:04,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:03:04,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:03:04,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:03:04,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:03:04,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/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 [2020-11-29 20:03:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:03:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:03:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:03:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:03:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:03:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:03:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:03:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:03:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:03:04,725 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:03:04,726 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 20:03:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:03:04 BoogieIcfgContainer [2020-11-29 20:03:04,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:03:04,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:03:04,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:03:04,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:03:04,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:03:03" (1/3) ... [2020-11-29 20:03:04,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d09de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:03:04, skipping insertion in model container [2020-11-29 20:03:04,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:03" (2/3) ... [2020-11-29 20:03:04,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d09de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:03:04, skipping insertion in model container [2020-11-29 20:03:04,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:03:04" (3/3) ... [2020-11-29 20:03:04,740 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-11-29 20:03:04,757 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:03:04,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:03:04,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:03:04,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:03:04,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:03:04,812 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:03:04,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:03:04,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:03:04,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:03:04,813 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:03:04,813 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:03:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 20:03:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:03:04,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:03:04,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:03:04,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:03:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:04,845 INFO L82 PathProgramCache]: Analyzing trace with hash 220216549, now seen corresponding path program 1 times [2020-11-29 20:03:04,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:04,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375851603] [2020-11-29 20:03:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:03:05,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375851603] [2020-11-29 20:03:05,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:03:05,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:03:05,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111313413] [2020-11-29 20:03:05,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:03:05,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:05,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:03:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:03:05,108 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-29 20:03:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:05,134 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-11-29 20:03:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:03:05,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 20:03:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:03:05,146 INFO L225 Difference]: With dead ends: 35 [2020-11-29 20:03:05,147 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 20:03:05,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:03:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 20:03:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 20:03:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 20:03:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 20:03:05,211 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2020-11-29 20:03:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:03:05,212 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 20:03:05,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:03:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 20:03:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:03:05,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:03:05,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:03:05,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:03:05,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:03:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:05,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1936219756, now seen corresponding path program 1 times [2020-11-29 20:03:05,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:05,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394000728] [2020-11-29 20:03:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:03:05,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394000728] [2020-11-29 20:03:05,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:03:05,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:03:05,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974624243] [2020-11-29 20:03:05,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:03:05,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:05,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:03:05,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:03:05,483 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-11-29 20:03:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:05,637 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-11-29 20:03:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:03:05,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 20:03:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:03:05,640 INFO L225 Difference]: With dead ends: 35 [2020-11-29 20:03:05,640 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 20:03:05,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:03:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 20:03:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-11-29 20:03:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 20:03:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-29 20:03:05,647 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-11-29 20:03:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:03:05,648 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-29 20:03:05,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:03:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-29 20:03:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:03:05,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:03:05,649 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:03:05,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:03:05,650 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:03:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:05,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1496568487, now seen corresponding path program 1 times [2020-11-29 20:03:05,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:05,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012948235] [2020-11-29 20:03:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:06,075 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2020-11-29 20:03:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:03:06,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012948235] [2020-11-29 20:03:06,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758978217] [2020-11-29 20:03:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/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 [2020-11-29 20:03:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 20:03:06,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:06,262 INFO L384 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 [2020-11-29 20:03:06,263 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:03:06,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:03:06,314 INFO L384 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 [2020-11-29 20:03:06,315 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:03:06,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:03:06,332 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:03:06,333 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-29 20:03:06,389 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-29 20:03:06,390 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:03:06,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:03:06,419 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-29 20:03:06,420 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:03:06,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:03:06,434 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:03:06,435 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-11-29 20:03:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:03:06,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:03:06,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 20:03:06,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66214840] [2020-11-29 20:03:06,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:03:06,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:06,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:03:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:03:06,442 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-11-29 20:03:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:06,585 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-29 20:03:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:03:06,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 20:03:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:03:06,589 INFO L225 Difference]: With dead ends: 39 [2020-11-29 20:03:06,589 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 20:03:06,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:03:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 20:03:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2020-11-29 20:03:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 20:03:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-29 20:03:06,604 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2020-11-29 20:03:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:03:06,606 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-29 20:03:06,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:03:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-29 20:03:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:03:06,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:03:06,608 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:03:06,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:03:06,829 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:03:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2013732869, now seen corresponding path program 1 times [2020-11-29 20:03:06,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:06,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265956306] [2020-11-29 20:03:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:06,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:06,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:06,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:06,994 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:03:06,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:03:07,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:03:07 BoogieIcfgContainer [2020-11-29 20:03:07,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:03:07,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:03:07,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:03:07,033 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:03:07,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:03:04" (3/4) ... [2020-11-29 20:03:07,037 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:03:07,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7e7e2823-60b4-404b-b2da-8d30eaa88266/bin/uautomizer/witness.graphml [2020-11-29 20:03:07,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:03:07,100 INFO L168 Benchmark]: Toolchain (without parser) took 3884.42 ms. Allocated memory is still 123.7 MB. Free memory was 96.2 MB in the beginning and 87.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:07,101 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 92.3 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:03:07,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.20 ms. Allocated memory is still 123.7 MB. Free memory was 96.2 MB in the beginning and 88.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:07,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.74 ms. Allocated memory is still 123.7 MB. Free memory was 88.7 MB in the beginning and 86.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:07,103 INFO L168 Benchmark]: Boogie Preprocessor took 70.71 ms. Allocated memory is still 123.7 MB. Free memory was 86.8 MB in the beginning and 85.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:03:07,104 INFO L168 Benchmark]: RCFGBuilder took 687.68 ms. Allocated memory is still 123.7 MB. Free memory was 85.5 MB in the beginning and 68.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:07,105 INFO L168 Benchmark]: TraceAbstraction took 2302.96 ms. Allocated memory is still 123.7 MB. Free memory was 68.3 MB in the beginning and 90.3 MB in the end (delta: -22.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:03:07,106 INFO L168 Benchmark]: Witness Printer took 65.14 ms. Allocated memory is still 123.7 MB. Free memory was 90.3 MB in the beginning and 87.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:07,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 92.3 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 649.20 ms. Allocated memory is still 123.7 MB. Free memory was 96.2 MB in the beginning and 88.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.74 ms. Allocated memory is still 123.7 MB. Free memory was 88.7 MB in the beginning and 86.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.71 ms. Allocated memory is still 123.7 MB. Free memory was 86.8 MB in the beginning and 85.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 687.68 ms. Allocated memory is still 123.7 MB. Free memory was 85.5 MB in the beginning and 68.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2302.96 ms. Allocated memory is still 123.7 MB. Free memory was 68.3 MB in the beginning and 90.3 MB in the end (delta: -22.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.14 ms. Allocated memory is still 123.7 MB. Free memory was 90.3 MB in the beginning and 87.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] a->h = 2 [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND TRUE p->h != 2 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "simple-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 62 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 3 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 3699 SizeOfPredicates, 7 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...