./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh --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 64bit --witnessprinter.graph.data.programhash 33d006375056e7e3c58d58b776bed0fedce081ec4ff9e691f038a741177fe7dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:13:16,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:13:16,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:13:16,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:13:16,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:13:16,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:13:16,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:13:16,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:13:16,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:13:16,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:13:16,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:13:16,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:13:16,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:13:16,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:13:16,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:13:16,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:13:16,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:13:16,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:13:16,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:13:16,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:13:16,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:13:16,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:13:16,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:13:16,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:13:16,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:13:16,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:13:16,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:13:16,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:13:16,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:13:16,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:13:16,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:13:16,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:13:16,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:13:16,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:13:16,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:13:16,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:13:16,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:13:16,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:13:16,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:13:16,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:13:16,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:13:16,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-12-14 14:13:16,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:13:16,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:13:16,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:13:16,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:13:16,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:13:16,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:13:16,841 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:13:16,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:13:16,841 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:13:16,841 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:13:16,841 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:13:16,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:13:16,842 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:13:16,842 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:13:16,842 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:13:16,842 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:13:16,842 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:13:16,842 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:13:16,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:13:16,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:13:16,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:13:16,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:13:16,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:13:16,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:13:16,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:13:16,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:13:16,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:13:16,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:13:16,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:13:16,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:13:16,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:13:16,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:13:16,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33d006375056e7e3c58d58b776bed0fedce081ec4ff9e691f038a741177fe7dd [2022-12-14 14:13:17,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:13:17,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:13:17,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:13:17,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:13:17,034 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:13:17,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i [2022-12-14 14:13:19,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:13:19,835 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:13:19,835 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i [2022-12-14 14:13:19,839 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/data/290ce1101/9e19632c412a40f1a00138dcb1b958c7/FLAG78d2a0351 [2022-12-14 14:13:20,260 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/data/290ce1101/9e19632c412a40f1a00138dcb1b958c7 [2022-12-14 14:13:20,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:13:20,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:13:20,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:13:20,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:13:20,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:13:20,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737be91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20, skipping insertion in model container [2022-12-14 14:13:20,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:13:20,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:13:20,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:13:20,382 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:13:20,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:13:20,400 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:13:20,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20 WrapperNode [2022-12-14 14:13:20,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:13:20,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:13:20,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:13:20,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:13:20,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,422 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-12-14 14:13:20,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:13:20,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:13:20,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:13:20,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:13:20,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:13:20,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:13:20,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:13:20,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:13:20,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (1/1) ... [2022-12-14 14:13:20,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:13:20,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:13:20,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:13:20,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:13:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:13:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-12-14 14:13:20,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-12-14 14:13:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:13:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:13:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:13:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:13:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:13:20,541 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:13:20,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:13:20,664 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:13:20,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:13:20,682 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:13:20,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:13:20 BoogieIcfgContainer [2022-12-14 14:13:20,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:13:20,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:13:20,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:13:20,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:13:20,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:13:20" (1/3) ... [2022-12-14 14:13:20,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b0d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:13:20, skipping insertion in model container [2022-12-14 14:13:20,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:13:20" (2/3) ... [2022-12-14 14:13:20,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b0d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:13:20, skipping insertion in model container [2022-12-14 14:13:20,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:13:20" (3/3) ... [2022-12-14 14:13:20,690 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex3.i [2022-12-14 14:13:20,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:13:20,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-14 14:13:20,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:13:20,745 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a751f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:13:20,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-14 14:13:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 16 states have (on average 2.0) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:13:20,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:20,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:13:20,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash 89694, now seen corresponding path program 1 times [2022-12-14 14:13:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:20,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886522966] [2022-12-14 14:13:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:20,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:13:20,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:20,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886522966] [2022-12-14 14:13:20,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886522966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:20,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:20,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:13:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957108676] [2022-12-14 14:13:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:13:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:13:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:13:20,956 INFO L87 Difference]: Start difference. First operand has 34 states, 16 states have (on average 2.0) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,004 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-12-14 14:13:21,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:13:21,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 14:13:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,012 INFO L225 Difference]: With dead ends: 33 [2022-12-14 14:13:21,012 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 14:13:21,013 INFO L412 NwaCegarLoop]: 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 [2022-12-14 14:13:21,016 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 43 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 14:13:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 14:13:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.875) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-12-14 14:13:21,041 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 3 [2022-12-14 14:13:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,041 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-12-14 14:13:21,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-12-14 14:13:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:13:21,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:21,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:13:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:13:21,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:21,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 89695, now seen corresponding path program 1 times [2022-12-14 14:13:21,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:21,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35099338] [2022-12-14 14:13:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:21,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:13:21,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:21,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35099338] [2022-12-14 14:13:21,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35099338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:21,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:21,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:13:21,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325534115] [2022-12-14 14:13:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:21,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:13:21,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:13:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:13:21,117 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,144 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-12-14 14:13:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:13:21,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 14:13:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,146 INFO L225 Difference]: With dead ends: 34 [2022-12-14 14:13:21,146 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 14:13:21,146 INFO L412 NwaCegarLoop]: 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 [2022-12-14 14:13:21,148 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 14:13:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-12-14 14:13:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.8125) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-12-14 14:13:21,155 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 3 [2022-12-14 14:13:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,156 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-12-14 14:13:21,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-12-14 14:13:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:13:21,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:21,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:13:21,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:13:21,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash 90415, now seen corresponding path program 1 times [2022-12-14 14:13:21,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:21,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563867983] [2022-12-14 14:13:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:13:21,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:21,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563867983] [2022-12-14 14:13:21,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563867983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:21,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:21,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:13:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38233009] [2022-12-14 14:13:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:21,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:13:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:13:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:13:21,180 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,205 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-12-14 14:13:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:13:21,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 14:13:21,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,207 INFO L225 Difference]: With dead ends: 33 [2022-12-14 14:13:21,207 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 14:13:21,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:13:21,209 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 14:13:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 14:13:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-12-14 14:13:21,215 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 3 [2022-12-14 14:13:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,216 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-12-14 14:13:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-12-14 14:13:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:13:21,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:21,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 14:13:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:13:21,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1622393620, now seen corresponding path program 1 times [2022-12-14 14:13:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:21,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902962064] [2022-12-14 14:13:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:21,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:13:21,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:21,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902962064] [2022-12-14 14:13:21,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902962064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:21,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:21,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:13:21,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079576504] [2022-12-14 14:13:21,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:13:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:21,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:13:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:13:21,308 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,366 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-12-14 14:13:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:13:21,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 14:13:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,368 INFO L225 Difference]: With dead ends: 27 [2022-12-14 14:13:21,368 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 14:13:21,368 INFO L412 NwaCegarLoop]: 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 [2022-12-14 14:13:21,369 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 29 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 14:13:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 14:13:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-12-14 14:13:21,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 6 [2022-12-14 14:13:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,374 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-12-14 14:13:21,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-12-14 14:13:21,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:13:21,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:21,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 14:13:21,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:13:21,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:21,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1622393619, now seen corresponding path program 1 times [2022-12-14 14:13:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:21,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218348020] [2022-12-14 14:13:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:21,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:13:21,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:21,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218348020] [2022-12-14 14:13:21,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218348020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:21,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:21,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:13:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673979279] [2022-12-14 14:13:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:13:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:13:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:13:21,474 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,526 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-12-14 14:13:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:13:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 14:13:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,528 INFO L225 Difference]: With dead ends: 22 [2022-12-14 14:13:21,528 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 14:13:21,529 INFO L412 NwaCegarLoop]: 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 [2022-12-14 14:13:21,530 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 14:13:21,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 14:13:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-14 14:13:21,534 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 6 [2022-12-14 14:13:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,534 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-14 14:13:21,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-14 14:13:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:13:21,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:21,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:13:21,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:13:21,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONMEMORY_FREE === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:21,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1942054112, now seen corresponding path program 1 times [2022-12-14 14:13:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:21,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785111179] [2022-12-14 14:13:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:21,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:13:21,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:21,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785111179] [2022-12-14 14:13:21,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785111179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:21,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:21,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:13:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628593762] [2022-12-14 14:13:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:21,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:13:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:13:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:13:21,597 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,630 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-12-14 14:13:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:13:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 14:13:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,631 INFO L225 Difference]: With dead ends: 21 [2022-12-14 14:13:21,631 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 14:13:21,631 INFO L412 NwaCegarLoop]: 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 [2022-12-14 14:13:21,632 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 19 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 14:13:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 14:13:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:13:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-12-14 14:13:21,636 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2022-12-14 14:13:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,636 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-12-14 14:13:21,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-12-14 14:13:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:13:21,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:21,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:13:21,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:13:21,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-14 14:13:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1769127286, now seen corresponding path program 1 times [2022-12-14 14:13:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:21,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041182164] [2022-12-14 14:13:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:21,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:13:21,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:21,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041182164] [2022-12-14 14:13:21,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041182164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:21,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:13:21,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:13:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660270435] [2022-12-14 14:13:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:21,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:13:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:13:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:13:21,761 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 14:13:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:21,810 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-12-14 14:13:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:13:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-14 14:13:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:21,811 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:13:21,811 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:13:21,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:13:21,812 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:21,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 28 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:13:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:13:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:13:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:13:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:13:21,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-12-14 14:13:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:21,814 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:13:21,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 14:13:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:13:21,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:13:21,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr4ASSERT_VIOLATIONMEMORY_FREE (9 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr5ASSERT_VIOLATIONMEMORY_FREE (8 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr6ASSERT_VIOLATIONMEMORY_FREE (7 of 14 remaining) [2022-12-14 14:13:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-12-14 14:13:21,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2022-12-14 14:13:21,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2022-12-14 14:13:21,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2022-12-14 14:13:21,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2022-12-14 14:13:21,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2022-12-14 14:13:21,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2022-12-14 14:13:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:13:21,821 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:13:21,822 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:13:21,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:13:21 BoogieIcfgContainer [2022-12-14 14:13:21,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:13:21,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:13:21,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:13:21,826 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:13:21,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:13:20" (3/4) ... [2022-12-14 14:13:21,828 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:13:21,832 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec [2022-12-14 14:13:21,836 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-14 14:13:21,836 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 14:13:21,836 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 14:13:21,837 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 14:13:21,861 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:13:21,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:13:21,862 INFO L158 Benchmark]: Toolchain (without parser) took 1598.92ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 78.6MB in the beginning and 82.6MB in the end (delta: -4.0MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,863 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:13:21,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.20ms. Allocated memory is still 113.2MB. Free memory was 78.3MB in the beginning and 68.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.85ms. Allocated memory is still 113.2MB. Free memory was 68.9MB in the beginning and 67.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,863 INFO L158 Benchmark]: Boogie Preprocessor took 14.80ms. Allocated memory is still 113.2MB. Free memory was 67.5MB in the beginning and 66.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,864 INFO L158 Benchmark]: RCFGBuilder took 246.10ms. Allocated memory is still 113.2MB. Free memory was 66.5MB in the beginning and 53.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,864 INFO L158 Benchmark]: TraceAbstraction took 1139.57ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 53.2MB in the beginning and 85.8MB in the end (delta: -32.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,864 INFO L158 Benchmark]: Witness Printer took 36.31ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 82.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:13:21,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.20ms. Allocated memory is still 113.2MB. Free memory was 78.3MB in the beginning and 68.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.85ms. Allocated memory is still 113.2MB. Free memory was 68.9MB in the beginning and 67.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.80ms. Allocated memory is still 113.2MB. Free memory was 67.5MB in the beginning and 66.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.10ms. Allocated memory is still 113.2MB. Free memory was 66.5MB in the beginning and 53.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1139.57ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 53.2MB in the beginning and 85.8MB in the end (delta: -32.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 36.31ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 82.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 11]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 11]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 226 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 252 IncrementalHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 122 mSDtfsCounter, 252 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 14:13:21,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1c0c85-d0f5-4f85-91a0-47084ba257c8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE