./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 282a32bc5fb3d70423f87a450340f7a26ab0f093 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:56:53,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:56:53,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:56:53,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:56:53,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:56:53,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:56:53,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:56:53,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:56:53,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:56:53,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:56:53,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:56:53,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:56:53,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:56:53,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:56:53,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:56:53,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:56:53,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:56:53,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:56:53,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:56:53,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:56:53,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:56:53,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:56:53,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:56:53,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:56:53,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:56:53,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:56:53,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:56:53,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:56:53,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:56:53,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:56:53,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:56:53,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:56:53,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:56:53,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:56:53,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:56:53,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:56:53,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:56:53,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:56:53,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:56:53,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:56:53,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:56:53,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2019-11-15 20:56:53,577 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:56:53,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:56:53,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:56:53,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:56:53,579 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:56:53,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:56:53,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:56:53,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:56:53,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:56:53,581 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 20:56:53,582 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 20:56:53,582 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 20:56:53,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:56:53,582 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:56:53,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:56:53,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:56:53,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:56:53,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:56:53,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:56:53,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:56:53,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:56:53,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:56:53,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:56:53,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cb39f34c-b37d-4891-834c-39863a28082c/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2019-11-15 20:56:53,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:56:53,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:56:53,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:56:53,674 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:56:53,674 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:56:53,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-11-15 20:56:53,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/data/277030ddf/d0a990cb794046da965456343a3eea42/FLAGc27ad07a0 [2019-11-15 20:56:54,151 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:56:54,151 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-11-15 20:56:54,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/data/277030ddf/d0a990cb794046da965456343a3eea42/FLAGc27ad07a0 [2019-11-15 20:56:54,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/data/277030ddf/d0a990cb794046da965456343a3eea42 [2019-11-15 20:56:54,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:56:54,503 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 20:56:54,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:56:54,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:56:54,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:56:54,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee03a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54, skipping insertion in model container [2019-11-15 20:56:54,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,522 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:56:54,540 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:56:54,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:56:54,772 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:56:54,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:56:54,912 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:56:54,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54 WrapperNode [2019-11-15 20:56:54,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:56:54,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:56:54,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:56:54,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:56:54,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... [2019-11-15 20:56:54,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:56:54,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:56:54,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:56:54,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:56:54,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/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 [2019-11-15 20:56:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 20:56:55,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:56:55,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 20:56:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 20:56:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 20:56:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:56:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:56:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:56:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:56:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 20:56:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:56:55,323 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:56:55,323 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 20:56:55,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:56:55 BoogieIcfgContainer [2019-11-15 20:56:55,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:56:55,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:56:55,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:56:55,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:56:55,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:56:54" (1/3) ... [2019-11-15 20:56:55,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cac4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:56:55, skipping insertion in model container [2019-11-15 20:56:55,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:56:54" (2/3) ... [2019-11-15 20:56:55,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cac4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:56:55, skipping insertion in model container [2019-11-15 20:56:55,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:56:55" (3/3) ... [2019-11-15 20:56:55,335 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2019-11-15 20:56:55,353 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:56:55,362 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-15 20:56:55,390 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-15 20:56:55,438 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:56:55,438 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 20:56:55,439 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:56:55,439 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:56:55,439 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:56:55,439 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:56:55,439 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:56:55,440 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:56:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 20:56:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:56:55,480 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:55,481 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:55,483 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:55,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1846113273, now seen corresponding path program 1 times [2019-11-15 20:56:55,496 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:55,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917492798] [2019-11-15 20:56:55,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:55,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:55,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:55,734 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917492798] [2019-11-15 20:56:55,735 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:56:55,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:56:55,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909751899] [2019-11-15 20:56:55,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:56:55,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:55,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:56:55,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:56:55,755 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-15 20:56:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:55,901 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-11-15 20:56:55,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:56:55,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 20:56:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:55,913 INFO L225 Difference]: With dead ends: 35 [2019-11-15 20:56:55,913 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 20:56:55,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:56:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 20:56:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-11-15 20:56:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 20:56:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-15 20:56:55,958 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 8 [2019-11-15 20:56:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:55,959 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-15 20:56:55,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:56:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-15 20:56:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:56:55,960 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:55,960 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:55,961 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1846113274, now seen corresponding path program 1 times [2019-11-15 20:56:55,962 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:55,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480457492] [2019-11-15 20:56:55,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:55,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:55,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:56,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480457492] [2019-11-15 20:56:56,033 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:56:56,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:56:56,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567064917] [2019-11-15 20:56:56,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:56:56,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:56,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:56:56,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:56:56,037 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-11-15 20:56:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:56,119 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-11-15 20:56:56,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:56:56,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 20:56:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:56,121 INFO L225 Difference]: With dead ends: 26 [2019-11-15 20:56:56,121 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 20:56:56,122 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:56:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 20:56:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 20:56:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:56:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-15 20:56:56,128 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2019-11-15 20:56:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:56,129 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-15 20:56:56,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:56:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-15 20:56:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:56:56,130 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:56,130 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:56,131 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:56,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1545536714, now seen corresponding path program 1 times [2019-11-15 20:56:56,132 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:56,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557949752] [2019-11-15 20:56:56,132 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:56,132 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:56,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:56,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557949752] [2019-11-15 20:56:56,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430767450] [2019-11-15 20:56:56,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/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 [2019-11-15 20:56:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 20:56:56,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:56:56,422 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-11-15 20:56:56,423 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:56:56,432 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:56:56,433 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:56:56,433 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 20:56:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:56,454 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:56:56,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2019-11-15 20:56:56,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458982695] [2019-11-15 20:56:56,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:56:56,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:56,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:56:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:56:56,457 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-11-15 20:56:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:56,565 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-15 20:56:56,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:56:56,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-15 20:56:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:56,567 INFO L225 Difference]: With dead ends: 32 [2019-11-15 20:56:56,567 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 20:56:56,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:56:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 20:56:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-15 20:56:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 20:56:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-15 20:56:56,574 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 12 [2019-11-15 20:56:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:56,574 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-15 20:56:56,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:56:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-15 20:56:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:56:56,576 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:56,576 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:56,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:56,788 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:56,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2013750285, now seen corresponding path program 2 times [2019-11-15 20:56:56,788 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:56,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260682095] [2019-11-15 20:56:56,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:56,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:56,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:56,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260682095] [2019-11-15 20:56:56,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643261532] [2019-11-15 20:56:56,957 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:57,018 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:56:57,018 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:56:57,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 20:56:57,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:56:57,033 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-11-15 20:56:57,033 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:56:57,042 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:56:57,043 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:56:57,043 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 20:56:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:57,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:56:57,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2019-11-15 20:56:57,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96567358] [2019-11-15 20:56:57,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:56:57,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:57,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:56:57,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:56:57,156 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2019-11-15 20:56:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:57,211 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-15 20:56:57,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:56:57,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-15 20:56:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:57,213 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:56:57,213 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 20:56:57,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:56:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 20:56:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-15 20:56:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-15 20:56:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-15 20:56:57,218 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2019-11-15 20:56:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:57,218 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-15 20:56:57,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:56:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-15 20:56:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 20:56:57,220 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:57,220 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:57,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:57,425 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1816242916, now seen corresponding path program 1 times [2019-11-15 20:56:57,425 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:57,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917454039] [2019-11-15 20:56:57,426 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:57,426 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:57,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:57,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917454039] [2019-11-15 20:56:57,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18667999] [2019-11-15 20:56:57,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:57,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:56:57,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:56:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:57,592 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:56:57,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 20:56:57,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114964907] [2019-11-15 20:56:57,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:56:57,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:56:57,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:56:57,594 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2019-11-15 20:56:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:57,696 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-11-15 20:56:57,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:56:57,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-15 20:56:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:57,698 INFO L225 Difference]: With dead ends: 34 [2019-11-15 20:56:57,698 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 20:56:57,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:56:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 20:56:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2019-11-15 20:56:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 20:56:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-15 20:56:57,703 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 18 [2019-11-15 20:56:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:57,704 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-15 20:56:57,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:56:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-15 20:56:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 20:56:57,705 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:57,705 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:57,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:57,919 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:57,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1776612895, now seen corresponding path program 2 times [2019-11-15 20:56:57,919 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:57,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485099739] [2019-11-15 20:56:57,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:57,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:57,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:56:58,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485099739] [2019-11-15 20:56:58,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821349214] [2019-11-15 20:56:58,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:58,089 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 20:56:58,089 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:56:58,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:56:58,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:56:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 20:56:58,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:56:58,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2019-11-15 20:56:58,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406136914] [2019-11-15 20:56:58,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:56:58,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:58,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:56:58,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:56:58,180 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2019-11-15 20:56:58,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:58,216 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-15 20:56:58,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:56:58,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 20:56:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:58,218 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:56:58,218 INFO L226 Difference]: Without dead ends: 25 [2019-11-15 20:56:58,219 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:56:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-15 20:56:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-15 20:56:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-15 20:56:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-15 20:56:58,224 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2019-11-15 20:56:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:58,224 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-15 20:56:58,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:56:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-15 20:56:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 20:56:58,226 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:56:58,226 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:56:58,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:56:58,429 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 20:56:58,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:56:58,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2104465759, now seen corresponding path program 1 times [2019-11-15 20:56:58,430 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:56:58,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189173600] [2019-11-15 20:56:58,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:58,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:56:58,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:56:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:56:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-15 20:56:58,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189173600] [2019-11-15 20:56:58,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:56:58,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 20:56:58,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130561678] [2019-11-15 20:56:58,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:56:58,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:56:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:56:58,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:56:58,562 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 8 states. [2019-11-15 20:56:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:56:58,701 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-15 20:56:58,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:56:58,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-11-15 20:56:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:56:58,702 INFO L225 Difference]: With dead ends: 24 [2019-11-15 20:56:58,702 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 20:56:58,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:56:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 20:56:58,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 20:56:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 20:56:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:56:58,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-11-15 20:56:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:56:58,705 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:56:58,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:56:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:56:58,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 20:56:58,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:56:58 BoogieIcfgContainer [2019-11-15 20:56:58,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:56:58,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:56:58,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:56:58,712 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:56:58,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:56:55" (3/4) ... [2019-11-15 20:56:58,721 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 20:56:58,727 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 20:56:58,728 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 20:56:58,733 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-15 20:56:58,733 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 20:56:58,733 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 20:56:58,779 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cb39f34c-b37d-4891-834c-39863a28082c/bin/uautomizer/witness.graphml [2019-11-15 20:56:58,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:56:58,781 INFO L168 Benchmark]: Toolchain (without parser) took 4278.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 950.1 MB in the beginning and 917.5 MB in the end (delta: 32.6 MB). Peak memory consumption was 177.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:56:58,782 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:56:58,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:56:58,783 INFO L168 Benchmark]: Boogie Preprocessor took 60.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:56:58,784 INFO L168 Benchmark]: RCFGBuilder took 350.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:56:58,785 INFO L168 Benchmark]: TraceAbstraction took 3384.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.8 MB in the end (delta: 193.4 MB). Peak memory consumption was 193.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:56:58,785 INFO L168 Benchmark]: Witness Printer took 68.47 ms. Allocated memory is still 1.2 GB. Free memory was 922.8 MB in the beginning and 917.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:56:58,788 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 409.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 350.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3384.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.8 MB in the end (delta: 193.4 MB). Peak memory consumption was 193.4 MB. Max. memory is 11.5 GB. * Witness Printer took 68.47 ms. Allocated memory is still 1.2 GB. Free memory was 922.8 MB in the beginning and 917.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 7 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 95 SDslu, 195 SDs, 0 SdLazy, 276 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 176 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 165 ConstructedInterpolants, 1 QuantifiedInterpolants, 16222 SizeOfPredicates, 1 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 38/77 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...