./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3444bab46e3acd40907f623c997f9115bc97543a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:27:03,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:27:03,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:27:03,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:27:03,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:27:03,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:27:03,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:27:03,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:27:03,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:27:03,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:27:03,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:27:03,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:27:03,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:27:03,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:27:03,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:27:03,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:27:03,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:27:03,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:27:03,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:27:03,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:27:03,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:27:03,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:27:03,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:27:03,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:27:03,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:27:03,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:27:03,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:27:03,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:27:03,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:27:03,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:27:03,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:27:03,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:27:03,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:27:03,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:27:03,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:27:03,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:27:03,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:27:03,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:27:03,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:27:03,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:27:03,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:27:03,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 11:27:03,493 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:27:03,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:27:03,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:27:03,494 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:27:03,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:27:03,494 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:27:03,494 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:27:03,494 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:27:03,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:27:03,495 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:27:03,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:27:03,495 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:27:03,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:27:03,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:27:03,495 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:27:03,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:27:03,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:27:03,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:27:03,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:27:03,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:27:03,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:27:03,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:27:03,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:27:03,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:27:03,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:27:03,499 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3444bab46e3acd40907f623c997f9115bc97543a [2019-12-07 11:27:03,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:27:03,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:27:03,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:27:03,619 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:27:03,619 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:27:03,620 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-12-07 11:27:03,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/data/9a11a4d35/9f3925fbeab14d948384ef38d55684b2/FLAGfbe4f241c [2019-12-07 11:27:04,038 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:27:04,039 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-12-07 11:27:04,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/data/9a11a4d35/9f3925fbeab14d948384ef38d55684b2/FLAGfbe4f241c [2019-12-07 11:27:04,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/data/9a11a4d35/9f3925fbeab14d948384ef38d55684b2 [2019-12-07 11:27:04,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:27:04,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:27:04,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:27:04,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:27:04,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:27:04,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9519e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04, skipping insertion in model container [2019-12-07 11:27:04,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:27:04,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:27:04,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:27:04,296 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:27:04,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:27:04,353 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:27:04,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04 WrapperNode [2019-12-07 11:27:04,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:27:04,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:27:04,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:27:04,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:27:04,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:27:04,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:27:04,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:27:04,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:27:04,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... [2019-12-07 11:27:04,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:27:04,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:27:04,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:27:04,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:27:04,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:27:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 11:27:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:27:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:27:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:27:04,577 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:27:04,577 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 11:27:04,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:27:04 BoogieIcfgContainer [2019-12-07 11:27:04,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:27:04,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:27:04,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:27:04,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:27:04,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:27:04" (1/3) ... [2019-12-07 11:27:04,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a9b1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:27:04, skipping insertion in model container [2019-12-07 11:27:04,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:27:04" (2/3) ... [2019-12-07 11:27:04,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a9b1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:27:04, skipping insertion in model container [2019-12-07 11:27:04,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:27:04" (3/3) ... [2019-12-07 11:27:04,583 INFO L109 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2019-12-07 11:27:04,589 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:27:04,592 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-12-07 11:27:04,600 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-12-07 11:27:04,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:27:04,611 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 11:27:04,611 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:27:04,612 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:27:04,612 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:27:04,612 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:27:04,612 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:27:04,612 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:27:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-12-07 11:27:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 11:27:04,626 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:04,626 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 11:27:04,627 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1925, now seen corresponding path program 1 times [2019-12-07 11:27:04,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:04,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964194903] [2019-12-07 11:27:04,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:04,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964194903] [2019-12-07 11:27:04,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:04,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 11:27:04,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051566101] [2019-12-07 11:27:04,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:27:04,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:04,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:27:04,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,766 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-12-07 11:27:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:04,778 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-12-07 11:27:04,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:27:04,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 11:27:04,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:04,786 INFO L225 Difference]: With dead ends: 22 [2019-12-07 11:27:04,786 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 11:27:04,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 11:27:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 11:27:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 11:27:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-12-07 11:27:04,815 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 2 [2019-12-07 11:27:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:04,815 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-12-07 11:27:04,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:27:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-12-07 11:27:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 11:27:04,816 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:04,816 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 11:27:04,816 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:04,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:04,816 INFO L82 PathProgramCache]: Analyzing trace with hash 59711, now seen corresponding path program 1 times [2019-12-07 11:27:04,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:04,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974915810] [2019-12-07 11:27:04,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:04,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974915810] [2019-12-07 11:27:04,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:04,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 11:27:04,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811236454] [2019-12-07 11:27:04,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:27:04,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:27:04,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,836 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2019-12-07 11:27:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:04,846 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-12-07 11:27:04,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:27:04,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 11:27:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:04,847 INFO L225 Difference]: With dead ends: 20 [2019-12-07 11:27:04,847 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 11:27:04,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 11:27:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 11:27:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 11:27:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-12-07 11:27:04,850 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 3 [2019-12-07 11:27:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:04,850 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-12-07 11:27:04,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:27:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-12-07 11:27:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 11:27:04,851 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:04,851 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 11:27:04,851 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:04,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:04,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1851079, now seen corresponding path program 1 times [2019-12-07 11:27:04,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:04,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559842909] [2019-12-07 11:27:04,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:04,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559842909] [2019-12-07 11:27:04,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:04,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 11:27:04,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383671925] [2019-12-07 11:27:04,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:27:04,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:04,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:27:04,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,877 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2019-12-07 11:27:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:04,890 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-12-07 11:27:04,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:27:04,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 11:27:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:04,892 INFO L225 Difference]: With dead ends: 19 [2019-12-07 11:27:04,892 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 11:27:04,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 11:27:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 11:27:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 11:27:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-12-07 11:27:04,895 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 4 [2019-12-07 11:27:04,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:04,896 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-12-07 11:27:04,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:27:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-12-07 11:27:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 11:27:04,896 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:04,896 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 11:27:04,897 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:04,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:04,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1778888490, now seen corresponding path program 1 times [2019-12-07 11:27:04,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:04,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700453051] [2019-12-07 11:27:04,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:04,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700453051] [2019-12-07 11:27:04,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:04,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:27:04,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903341855] [2019-12-07 11:27:04,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:27:04,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:04,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:27:04,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,921 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2019-12-07 11:27:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:04,929 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 11:27:04,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:27:04,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 11:27:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:04,930 INFO L225 Difference]: With dead ends: 17 [2019-12-07 11:27:04,930 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 11:27:04,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 11:27:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 11:27:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 11:27:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 11:27:04,933 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2019-12-07 11:27:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:04,933 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 11:27:04,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:27:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 11:27:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 11:27:04,933 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:04,933 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:27:04,934 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:04,934 INFO L82 PathProgramCache]: Analyzing trace with hash -689031604, now seen corresponding path program 1 times [2019-12-07 11:27:04,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:04,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294968874] [2019-12-07 11:27:04,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:04,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294968874] [2019-12-07 11:27:04,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:04,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:27:04,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425737926] [2019-12-07 11:27:04,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:27:04,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:04,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:27:04,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,957 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2019-12-07 11:27:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:04,972 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 11:27:04,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:27:04,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 11:27:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:04,973 INFO L225 Difference]: With dead ends: 15 [2019-12-07 11:27:04,973 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 11:27:04,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 11:27:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 11:27:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 11:27:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 11:27:04,976 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2019-12-07 11:27:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:04,976 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 11:27:04,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:27:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 11:27:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 11:27:04,977 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:04,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:27:04,977 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash 114856812, now seen corresponding path program 1 times [2019-12-07 11:27:04,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:04,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723180016] [2019-12-07 11:27:04,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:05,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723180016] [2019-12-07 11:27:05,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:05,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:27:05,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967650691] [2019-12-07 11:27:05,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:27:05,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:27:05,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:05,003 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2019-12-07 11:27:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:05,017 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 11:27:05,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:27:05,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 11:27:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:05,018 INFO L225 Difference]: With dead ends: 17 [2019-12-07 11:27:05,018 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 11:27:05,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:27:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 11:27:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 11:27:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 11:27:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 11:27:05,021 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2019-12-07 11:27:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:05,021 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 11:27:05,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:27:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 11:27:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 11:27:05,022 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:05,022 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:27:05,022 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -734406065, now seen corresponding path program 1 times [2019-12-07 11:27:05,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:05,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86667012] [2019-12-07 11:27:05,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:27:05,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86667012] [2019-12-07 11:27:05,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:27:05,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:27:05,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280681881] [2019-12-07 11:27:05,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:27:05,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:27:05,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:27:05,096 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-12-07 11:27:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:05,123 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 11:27:05,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:27:05,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 11:27:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:05,124 INFO L225 Difference]: With dead ends: 16 [2019-12-07 11:27:05,124 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 11:27:05,124 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:27:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 11:27:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 11:27:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 11:27:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 11:27:05,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2019-12-07 11:27:05,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:05,126 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 11:27:05,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:27:05,126 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 11:27:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 11:27:05,126 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:05,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:27:05,127 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 11:27:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash -165933941, now seen corresponding path program 1 times [2019-12-07 11:27:05,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:05,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812982238] [2019-12-07 11:27:05,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:27:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:27:05,158 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 11:27:05,158 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:27:05,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:27:05 BoogieIcfgContainer [2019-12-07 11:27:05,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:27:05,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:27:05,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:27:05,174 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:27:05,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:27:04" (3/4) ... [2019-12-07 11:27:05,176 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:27:05,204 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3ea4c755-ef72-4592-b899-a21bcf6a8047/bin/utaipan/witness.graphml [2019-12-07 11:27:05,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:27:05,205 INFO L168 Benchmark]: Toolchain (without parser) took 1144.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 934.0 MB in the beginning and 970.7 MB in the end (delta: -36.7 MB). Peak memory consumption was 56.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:27:05,206 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:27:05,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -140.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:27:05,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:27:05,207 INFO L168 Benchmark]: Boogie Preprocessor took 14.23 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:27:05,207 INFO L168 Benchmark]: RCFGBuilder took 182.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:27:05,207 INFO L168 Benchmark]: TraceAbstraction took 595.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 973.4 MB in the end (delta: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:27:05,208 INFO L168 Benchmark]: Witness Printer took 29.69 ms. Allocated memory is still 1.1 GB. Free memory was 973.4 MB in the beginning and 970.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:27:05,210 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -140.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.23 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 182.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 595.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 973.4 MB in the end (delta: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. * Witness Printer took 29.69 ms. Allocated memory is still 1.1 GB. Free memory was 973.4 MB in the beginning and 970.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; [L547] free(y) [L547] free(y) [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; [L550] COND TRUE adressX == adressY [L552] free(x) [L552] free(x) [L552] free(x) [L554] free(x) [L554] free(x) [L554] free(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 10 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 74 SDslu, 24 SDs, 0 SdLazy, 60 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...