./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/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 9281afa68f10f88b0abb59461461cab9597c1d50 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/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 9281afa68f10f88b0abb59461461cab9597c1d50 ...................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Sort FloatRoundingMode not declared --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:23,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:23,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:23,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:23,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:23,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:23,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:23,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:23,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:23,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:23,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:23,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:23,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:23,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:23,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:23,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:23,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:23,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:23,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:23,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:23,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:23,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:23,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:23,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:23,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:23,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:23,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:23,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:23,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:23,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:23,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:23,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:23,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:23,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:23,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:23,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:23,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:23,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:23,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:23,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:23,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:23,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:25:23,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:23,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:23,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:23,617 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:23,617 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:23,617 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:23,617 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:23,617 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:23,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:23,618 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:23,618 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:23,618 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:23,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:25:23,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:25:23,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:23,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:23,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:25:23,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:23,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:23,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:23,620 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:25:23,620 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:25:23,620 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:25:23,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:23,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:23,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:23,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:23,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:23,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:23,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:23,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:23,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:23,621 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:23,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:23,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:23,622 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/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/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 -> 9281afa68f10f88b0abb59461461cab9597c1d50 [2019-10-22 11:25:23,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:23,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:23,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:23,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:23,660 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:23,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2019-10-22 11:25:23,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/bacd775dd/7d92f5a58db7458fab6cd62810d857ba/FLAG04d35aad8 [2019-10-22 11:25:24,163 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:24,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/sv-benchmarks/c/memsafety/lockfree-3.2.i [2019-10-22 11:25:24,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/bacd775dd/7d92f5a58db7458fab6cd62810d857ba/FLAG04d35aad8 [2019-10-22 11:25:24,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/bacd775dd/7d92f5a58db7458fab6cd62810d857ba [2019-10-22 11:25:24,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:24,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:24,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:24,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:24,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:24,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:24,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebde120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24, skipping insertion in model container [2019-10-22 11:25:24,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:24,525 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:24,558 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:24,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:24,870 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:24,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:24,985 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:24,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24 WrapperNode [2019-10-22 11:25:24,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:24,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:24,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:24,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:24,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:25,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:25,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:25,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:25,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... [2019-10-22 11:25:25,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:25,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:25,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:25,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:25,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/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 [2019-10-22 11:25:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:25:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:25:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 11:25:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 11:25:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:25,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:25,598 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:25,598 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 11:25:25,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:25 BoogieIcfgContainer [2019-10-22 11:25:25,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:25,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:25,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:25,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:25,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:24" (1/3) ... [2019-10-22 11:25:25,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f932ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:25, skipping insertion in model container [2019-10-22 11:25:25,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:24" (2/3) ... [2019-10-22 11:25:25,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f932ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:25, skipping insertion in model container [2019-10-22 11:25:25,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:25" (3/3) ... [2019-10-22 11:25:25,608 INFO L109 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2019-10-22 11:25:25,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:25,625 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-10-22 11:25:25,635 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-10-22 11:25:25,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:25,653 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:25:25,653 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:25,653 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:25,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:25,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:25,654 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:25,654 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2019-10-22 11:25:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:25,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:25,683 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:25,687 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:25,694 INFO L82 PathProgramCache]: Analyzing trace with hash 28817120, now seen corresponding path program 1 times [2019-10-22 11:25:25,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:25,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455724413] [2019-10-22 11:25:25,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:25,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:25,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:25,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455724413] [2019-10-22 11:25:25,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:25,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:25,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140751537] [2019-10-22 11:25:25,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:25,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:25,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:25,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:25,833 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2019-10-22 11:25:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:25,849 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2019-10-22 11:25:25,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:25,851 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:25,862 INFO L225 Difference]: With dead ends: 62 [2019-10-22 11:25:25,862 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 11:25:25,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 11:25:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-10-22 11:25:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 11:25:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-10-22 11:25:25,898 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 5 [2019-10-22 11:25:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:25,898 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-10-22 11:25:25,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-10-22 11:25:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:25,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:25,899 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:25,899 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1806850988, now seen corresponding path program 1 times [2019-10-22 11:25:25,900 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:25,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025085526] [2019-10-22 11:25:25,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:25,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:25,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:25,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025085526] [2019-10-22 11:25:25,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:25,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:25,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129911707] [2019-10-22 11:25:25,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:25,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:25,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:25,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:25,940 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2019-10-22 11:25:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:25,968 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2019-10-22 11:25:25,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:25,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:25:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:25,971 INFO L225 Difference]: With dead ends: 61 [2019-10-22 11:25:25,971 INFO L226 Difference]: Without dead ends: 61 [2019-10-22 11:25:25,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-22 11:25:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-10-22 11:25:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-22 11:25:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2019-10-22 11:25:25,979 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 7 [2019-10-22 11:25:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:25,979 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2019-10-22 11:25:25,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2019-10-22 11:25:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:25,980 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:25,980 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:25,980 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:25,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910570, now seen corresponding path program 1 times [2019-10-22 11:25:25,981 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:25,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126112306] [2019-10-22 11:25:25,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:25,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:25,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126112306] [2019-10-22 11:25:26,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:26,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573423673] [2019-10-22 11:25:26,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:26,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:26,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:26,013 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 3 states. [2019-10-22 11:25:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,061 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2019-10-22 11:25:26,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:26,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:25:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,063 INFO L225 Difference]: With dead ends: 107 [2019-10-22 11:25:26,063 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:25:26,063 INFO L600 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 [2019-10-22 11:25:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:25:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2019-10-22 11:25:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-10-22 11:25:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 133 transitions. [2019-10-22 11:25:26,070 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 133 transitions. Word has length 7 [2019-10-22 11:25:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,070 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 133 transitions. [2019-10-22 11:25:26,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 133 transitions. [2019-10-22 11:25:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:25:26,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,071 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,071 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,072 INFO L82 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2019-10-22 11:25:26,072 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715783057] [2019-10-22 11:25:26,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715783057] [2019-10-22 11:25:26,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:26,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752338552] [2019-10-22 11:25:26,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:26,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:26,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:26,121 INFO L87 Difference]: Start difference. First operand 89 states and 133 transitions. Second operand 4 states. [2019-10-22 11:25:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,244 INFO L93 Difference]: Finished difference Result 117 states and 169 transitions. [2019-10-22 11:25:26,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:26,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 11:25:26,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,246 INFO L225 Difference]: With dead ends: 117 [2019-10-22 11:25:26,246 INFO L226 Difference]: Without dead ends: 117 [2019-10-22 11:25:26,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-22 11:25:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2019-10-22 11:25:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-22 11:25:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 166 transitions. [2019-10-22 11:25:26,256 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 166 transitions. Word has length 8 [2019-10-22 11:25:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,256 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 166 transitions. [2019-10-22 11:25:26,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 166 transitions. [2019-10-22 11:25:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:25:26,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,257 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,257 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash 179651426, now seen corresponding path program 1 times [2019-10-22 11:25:26,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977649205] [2019-10-22 11:25:26,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977649205] [2019-10-22 11:25:26,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:26,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512015187] [2019-10-22 11:25:26,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:26,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:26,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:26,318 INFO L87 Difference]: Start difference. First operand 105 states and 166 transitions. Second operand 3 states. [2019-10-22 11:25:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,377 INFO L93 Difference]: Finished difference Result 197 states and 311 transitions. [2019-10-22 11:25:26,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:26,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-22 11:25:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,379 INFO L225 Difference]: With dead ends: 197 [2019-10-22 11:25:26,379 INFO L226 Difference]: Without dead ends: 194 [2019-10-22 11:25:26,379 INFO L600 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 [2019-10-22 11:25:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-10-22 11:25:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 173. [2019-10-22 11:25:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-10-22 11:25:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 295 transitions. [2019-10-22 11:25:26,392 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 295 transitions. Word has length 8 [2019-10-22 11:25:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,392 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 295 transitions. [2019-10-22 11:25:26,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 295 transitions. [2019-10-22 11:25:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:25:26,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,393 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,393 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,393 INFO L82 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2019-10-22 11:25:26,394 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032077958] [2019-10-22 11:25:26,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032077958] [2019-10-22 11:25:26,451 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:26,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216221636] [2019-10-22 11:25:26,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:26,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:26,452 INFO L87 Difference]: Start difference. First operand 173 states and 295 transitions. Second operand 3 states. [2019-10-22 11:25:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,559 INFO L93 Difference]: Finished difference Result 259 states and 419 transitions. [2019-10-22 11:25:26,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:26,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-22 11:25:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,560 INFO L225 Difference]: With dead ends: 259 [2019-10-22 11:25:26,561 INFO L226 Difference]: Without dead ends: 259 [2019-10-22 11:25:26,561 INFO L600 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 [2019-10-22 11:25:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-22 11:25:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 238. [2019-10-22 11:25:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-22 11:25:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 405 transitions. [2019-10-22 11:25:26,585 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 405 transitions. Word has length 8 [2019-10-22 11:25:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,585 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 405 transitions. [2019-10-22 11:25:26,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 405 transitions. [2019-10-22 11:25:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:25:26,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,586 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,586 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,586 INFO L82 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2019-10-22 11:25:26,586 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192227091] [2019-10-22 11:25:26,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192227091] [2019-10-22 11:25:26,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:26,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399389721] [2019-10-22 11:25:26,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:26,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:26,631 INFO L87 Difference]: Start difference. First operand 238 states and 405 transitions. Second operand 3 states. [2019-10-22 11:25:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,691 INFO L93 Difference]: Finished difference Result 254 states and 406 transitions. [2019-10-22 11:25:26,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:26,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-22 11:25:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,693 INFO L225 Difference]: With dead ends: 254 [2019-10-22 11:25:26,693 INFO L226 Difference]: Without dead ends: 254 [2019-10-22 11:25:26,693 INFO L600 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 [2019-10-22 11:25:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-10-22 11:25:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2019-10-22 11:25:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-22 11:25:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 393 transitions. [2019-10-22 11:25:26,712 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 393 transitions. Word has length 8 [2019-10-22 11:25:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,712 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 393 transitions. [2019-10-22 11:25:26,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 393 transitions. [2019-10-22 11:25:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:25:26,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,713 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,713 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2019-10-22 11:25:26,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017653078] [2019-10-22 11:25:26,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017653078] [2019-10-22 11:25:26,764 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:25:26,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670079229] [2019-10-22 11:25:26,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:26,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:26,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:26,766 INFO L87 Difference]: Start difference. First operand 236 states and 393 transitions. Second operand 5 states. [2019-10-22 11:25:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,816 INFO L93 Difference]: Finished difference Result 498 states and 768 transitions. [2019-10-22 11:25:26,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:26,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 11:25:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,819 INFO L225 Difference]: With dead ends: 498 [2019-10-22 11:25:26,819 INFO L226 Difference]: Without dead ends: 498 [2019-10-22 11:25:26,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:26,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2019-10-22 11:25:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 402. [2019-10-22 11:25:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2019-10-22 11:25:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 654 transitions. [2019-10-22 11:25:26,835 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 654 transitions. Word has length 9 [2019-10-22 11:25:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,836 INFO L462 AbstractCegarLoop]: Abstraction has 402 states and 654 transitions. [2019-10-22 11:25:26,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 654 transitions. [2019-10-22 11:25:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:25:26,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,836 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,837 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,837 INFO L82 PathProgramCache]: Analyzing trace with hash 844095278, now seen corresponding path program 1 times [2019-10-22 11:25:26,837 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871902843] [2019-10-22 11:25:26,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:26,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871902843] [2019-10-22 11:25:26,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:26,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:26,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991358979] [2019-10-22 11:25:26,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:26,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:26,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:26,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:26,898 INFO L87 Difference]: Start difference. First operand 402 states and 654 transitions. Second operand 6 states. [2019-10-22 11:25:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:26,966 INFO L93 Difference]: Finished difference Result 826 states and 1266 transitions. [2019-10-22 11:25:26,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:26,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 11:25:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:26,970 INFO L225 Difference]: With dead ends: 826 [2019-10-22 11:25:26,970 INFO L226 Difference]: Without dead ends: 826 [2019-10-22 11:25:26,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:25:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2019-10-22 11:25:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 618. [2019-10-22 11:25:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-22 11:25:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 974 transitions. [2019-10-22 11:25:26,993 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 974 transitions. Word has length 10 [2019-10-22 11:25:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:26,994 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 974 transitions. [2019-10-22 11:25:26,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 974 transitions. [2019-10-22 11:25:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:25:26,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,996 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:26,996 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION]=== [2019-10-22 11:25:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash -359933169, now seen corresponding path program 1 times [2019-10-22 11:25:26,997 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:26,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249252034] [2019-10-22 11:25:26,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:26,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:27,088 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:25:27,089 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:27,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:27 BoogieIcfgContainer [2019-10-22 11:25:27,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:27,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:27,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:27,130 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:27,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:25" (3/4) ... [2019-10-22 11:25:27,134 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:25:27,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:27,137 INFO L168 Benchmark]: Toolchain (without parser) took 2630.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 939.2 MB in the beginning and 916.3 MB in the end (delta: 22.8 MB). Peak memory consumption was 136.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,137 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:27,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.08 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,139 INFO L168 Benchmark]: Boogie Preprocessor took 53.59 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. [2019-10-22 11:25:27,140 INFO L168 Benchmark]: RCFGBuilder took 499.01 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,141 INFO L168 Benchmark]: TraceAbstraction took 1529.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 916.3 MB in the end (delta: 140.6 MB). Peak memory consumption was 140.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,142 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 1.1 GB. Free memory is still 916.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:27,144 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 477.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.08 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.59 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 499.01 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1529.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 916.3 MB in the end (delta: 140.6 MB). Peak memory consumption was 140.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.01 ms. Allocated memory is still 1.1 GB. Free memory is still 916.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 581]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 581. Possible FailurePath: [L517] struct cell *S; [L518] int pc1 = 1; [L519] int pc4 = 1; [L520] static struct cell *t1 = ((void *)0); [L521] static struct cell *x1 = ((void *)0); [L550] struct cell* garbage; [L551] static struct cell *t4 = ((void *)0); [L552] static struct cell *x4 = ((void *)0); [L555] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L583] S || 1 != pc4 || __VERIFIER_nondet_int() [L583] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L583] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L524] pc1++ [L525] case 1: [L526] x1 = malloc(sizeof(*x1)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={3:0}, x4={0:0}] [L527] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={3:0}, x4={0:0}] [L528] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={3:0}, x4={0:0}] [L583] S || 1 != pc4 || __VERIFIER_nondet_int() [L583] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={3:0}, x4={0:0}] [L583] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L589] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={3:0}, x4={0:0}] [L594] S = ((void *)0) [L595] t1 = ((void *)0) [L596] x1 = ((void *)0) [L597] t4 = ((void *)0) [L598] x4 = ((void *)0) [L599] return !!garbage; VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 20 error locations. Result: UNSAFE, OverallTime: 1.4s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 824 SDtfs, 469 SDslu, 948 SDs, 0 SdLazy, 235 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=618occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 394 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 1149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:29,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:29,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:29,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:29,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:29,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:29,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:29,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:29,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:29,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:29,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:29,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:29,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:29,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:29,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:29,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:29,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:29,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:29,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:29,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:29,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:29,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:29,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:29,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:29,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:29,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:29,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:29,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:29,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:29,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:29,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:29,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:29,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:29,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:29,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:29,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:29,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:29,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:29,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:29,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:29,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:29,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:29,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:29,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:29,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:29,289 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:29,289 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:29,289 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:29,290 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:29,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:29,290 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:29,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:25:29,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:25:29,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:29,291 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:29,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:25:29,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:29,292 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:29,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:29,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:29,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:29,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:29,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:29,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:29,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:29,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:29,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:29,294 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:29,294 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:29,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:29,295 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/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 -> 9281afa68f10f88b0abb59461461cab9597c1d50 [2019-10-22 11:25:29,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:29,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:29,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:29,337 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:29,337 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:29,338 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2019-10-22 11:25:29,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/30f8d9731/333f19c96a5d46a4874cefbd949f9006/FLAGf291ff460 [2019-10-22 11:25:29,833 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:29,834 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/sv-benchmarks/c/memsafety/lockfree-3.2.i [2019-10-22 11:25:29,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/30f8d9731/333f19c96a5d46a4874cefbd949f9006/FLAGf291ff460 [2019-10-22 11:25:30,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/data/30f8d9731/333f19c96a5d46a4874cefbd949f9006 [2019-10-22 11:25:30,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:30,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:30,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:30,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:30,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:30,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5610841b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30, skipping insertion in model container [2019-10-22 11:25:30,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,179 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:30,208 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:30,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:30,541 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:30,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:30,641 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:30,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30 WrapperNode [2019-10-22 11:25:30,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:30,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:30,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:30,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:30,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:30,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:30,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:30,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:30,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... [2019-10-22 11:25:30,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:30,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:30,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:30,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:30,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/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 [2019-10-22 11:25:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:25:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:25:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 11:25:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 11:25:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:25:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:31,217 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:31,217 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 11:25:31,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:31 BoogieIcfgContainer [2019-10-22 11:25:31,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:31,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:31,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:31,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:31,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:30" (1/3) ... [2019-10-22 11:25:31,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb10e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:31, skipping insertion in model container [2019-10-22 11:25:31,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:30" (2/3) ... [2019-10-22 11:25:31,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb10e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:31, skipping insertion in model container [2019-10-22 11:25:31,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:31" (3/3) ... [2019-10-22 11:25:31,225 INFO L109 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2019-10-22 11:25:31,234 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:31,241 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-10-22 11:25:31,251 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-10-22 11:25:31,267 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:31,267 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:25:31,267 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:31,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:31,267 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:31,267 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:31,268 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:31,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-10-22 11:25:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:31,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:31,289 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:31,291 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION]=== [2019-10-22 11:25:31,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:31,296 INFO L82 PathProgramCache]: Analyzing trace with hash 28701576, now seen corresponding path program 1 times [2019-10-22 11:25:31,304 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:31,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2019922146] [2019-10-22 11:25:31,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_910ed55c-2b04-4a72-b346-cd9c0a59fa32/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:31,548 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:31,548 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Sort FloatRoundingMode not declared at de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.sort(WrapperScript.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.NonDeclaringTermTransferrer.transferSort(NonDeclaringTermTransferrer.java:111) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.DeclarableFunctionSymbol.defineOrDeclare(DeclarableFunctionSymbol.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.transferHistoryFromRecord(HistoryRecordingScript.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.SmtFunctionsAndAxioms.transferSymbols(SmtFunctionsAndAxioms.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.createExternalManagedScript(IpTcStrategyModuleTraceCheck.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:31,553 INFO L168 Benchmark]: Toolchain (without parser) took 1385.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -92.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:31,553 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:31,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:31,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.78 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:31,556 INFO L168 Benchmark]: Boogie Preprocessor took 32.49 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. [2019-10-22 11:25:31,556 INFO L168 Benchmark]: RCFGBuilder took 486.04 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:31,557 INFO L168 Benchmark]: TraceAbstraction took 331.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:31,560 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 474.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.78 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.49 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 486.04 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 331.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Sort FloatRoundingMode not declared de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Sort FloatRoundingMode not declared: de.uni_freiburg.informatik.ultimate.logic.NoopScript.sort(NoopScript.java:412) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...