./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0 --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 53eb964f347d54908ecbd10f35e9b63fbb661e4a7ab55b977edead5834613d23 --- 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-e04fb08 [2022-11-16 16:06:48,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:06:48,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:06:48,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:06:48,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:06:48,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:06:48,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:06:48,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:06:48,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:06:48,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:06:48,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:06:48,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:06:48,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:06:48,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:06:48,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:06:48,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:06:48,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:06:48,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:06:48,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:06:48,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:06:48,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:06:48,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:06:48,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:06:48,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:06:48,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:06:48,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:06:48,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:06:48,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:06:48,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:06:48,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:06:48,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:06:48,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:06:48,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:06:48,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:06:48,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:06:48,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:06:48,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:06:48,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:06:48,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:06:48,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:06:48,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:06:48,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-16 16:06:48,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:06:48,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:06:48,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:06:48,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:06:48,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:06:48,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:06:48,575 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:06:48,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:06:48,576 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:06:48,576 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:06:48,577 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:06:48,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:06:48,577 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:06:48,577 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:06:48,578 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:06:48,578 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:06:48,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:06:48,579 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:06:48,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:06:48,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:06:48,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:06:48,581 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:06:48,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:06:48,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:06:48,582 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:06:48,582 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:06:48,582 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:06:48,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:06:48,583 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:06:48,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:06:48,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:06:48,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:06:48,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:06:48,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:06:48,585 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:06:48,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:06:48,585 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:06:48,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:06:48,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:06:48,586 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_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53eb964f347d54908ecbd10f35e9b63fbb661e4a7ab55b977edead5834613d23 [2022-11-16 16:06:48,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:06:48,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:06:48,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:06:48,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:06:48,909 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:06:48,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i [2022-11-16 16:06:48,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/data/641aba7b4/e6a85c69e58e445795c58927f447bd19/FLAG89464ce59 [2022-11-16 16:06:49,647 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:06:49,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i [2022-11-16 16:06:49,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/data/641aba7b4/e6a85c69e58e445795c58927f447bd19/FLAG89464ce59 [2022-11-16 16:06:49,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/data/641aba7b4/e6a85c69e58e445795c58927f447bd19 [2022-11-16 16:06:49,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:06:49,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:06:49,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:06:49,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:06:49,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:06:49,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:49" (1/1) ... [2022-11-16 16:06:49,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102cec10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:49, skipping insertion in model container [2022-11-16 16:06:49,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:49" (1/1) ... [2022-11-16 16:06:49,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:06:49,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:06:50,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:06:50,318 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:06:50,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:06:50,381 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:06:50,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50 WrapperNode [2022-11-16 16:06:50,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:06:50,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:06:50,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:06:50,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:06:50,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,434 INFO L138 Inliner]: procedures = 111, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-11-16 16:06:50,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:06:50,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:06:50,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:06:50,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:06:50,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:06:50,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:06:50,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:06:50,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:06:50,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (1/1) ... [2022-11-16 16:06:50,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:06:50,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:06:50,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:06:50,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:06:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:06:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:06:50,737 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:06:50,739 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:06:50,929 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:06:51,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:06:51,018 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:06:51,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:06:51 BoogieIcfgContainer [2022-11-16 16:06:51,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:06:51,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:06:51,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:06:51,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:06:51,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:06:49" (1/3) ... [2022-11-16 16:06:51,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2fe733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:51, skipping insertion in model container [2022-11-16 16:06:51,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:50" (2/3) ... [2022-11-16 16:06:51,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2fe733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:51, skipping insertion in model container [2022-11-16 16:06:51,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:06:51" (3/3) ... [2022-11-16 16:06:51,031 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-1.i [2022-11-16 16:06:51,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:06:51,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-16 16:06:51,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:06:51,152 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;@3f2dd146, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:06:51,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 16:06:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-16 16:06:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:06:51,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:51,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:06:51,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-16 16:06:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2669403, now seen corresponding path program 1 times [2022-11-16 16:06:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:51,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011071789] [2022-11-16 16:06:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:51,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:51,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011071789] [2022-11-16 16:06:51,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011071789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:06:51,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:06:51,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:06:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898269018] [2022-11-16 16:06:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:06:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:06:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:06:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:06:51,850 INFO L87 Difference]: Start difference. First operand has 13 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 12 states have internal predecessors, (16), 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) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-16 16:06:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:51,974 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-11-16 16:06:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:06:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-11-16 16:06:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:51,989 INFO L225 Difference]: With dead ends: 14 [2022-11-16 16:06:51,990 INFO L226 Difference]: Without dead ends: 13 [2022-11-16 16:06:51,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:06:51,998 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:51,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:06:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-16 16:06:52,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2022-11-16 16:06:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-16 16:06:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-16 16:06:52,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2022-11-16 16:06:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:52,033 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-16 16:06:52,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-16 16:06:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-16 16:06:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:06:52,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:52,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:06:52,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:06:52,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-16 16:06:52,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2669404, now seen corresponding path program 1 times [2022-11-16 16:06:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:52,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238069121] [2022-11-16 16:06:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:52,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238069121] [2022-11-16 16:06:52,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238069121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:06:52,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:06:52,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:06:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741438954] [2022-11-16 16:06:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:06:52,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:06:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:52,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:06:52,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:06:52,556 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-16 16:06:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:52,642 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-16 16:06:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:06:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-11-16 16:06:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:52,644 INFO L225 Difference]: With dead ends: 18 [2022-11-16 16:06:52,644 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 16:06:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:06:52,646 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:52,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:06:52,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 16:06:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2022-11-16 16:06:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-16 16:06:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-16 16:06:52,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2022-11-16 16:06:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:52,652 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-16 16:06:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-16 16:06:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-16 16:06:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 16:06:52,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:52,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 16:06:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:06:52,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-16 16:06:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash 83488349, now seen corresponding path program 1 times [2022-11-16 16:06:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:52,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111544932] [2022-11-16 16:06:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:52,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:52,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111544932] [2022-11-16 16:06:52,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111544932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:06:52,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:06:52,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:06:52,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847554145] [2022-11-16 16:06:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:06:52,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:06:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:52,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:06:52,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:06:52,809 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-16 16:06:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:52,824 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-16 16:06:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:06:52,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-16 16:06:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:52,827 INFO L225 Difference]: With dead ends: 17 [2022-11-16 16:06:52,828 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 16:06:52,829 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 [2022-11-16 16:06:52,830 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:52,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:06:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 16:06:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2022-11-16 16:06:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-11-16 16:06:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-16 16:06:52,839 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2022-11-16 16:06:52,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:52,839 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-16 16:06:52,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-16 16:06:52,840 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-16 16:06:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 16:06:52,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:52,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:52,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:06:52,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-16 16:06:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2080195260, now seen corresponding path program 1 times [2022-11-16 16:06:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702985662] [2022-11-16 16:06:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:52,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:53,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:53,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702985662] [2022-11-16 16:06:53,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702985662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:06:53,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:06:53,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:06:53,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758128756] [2022-11-16 16:06:53,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:06:53,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:06:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:06:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:06:53,037 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 16:06:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:53,057 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-16 16:06:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:06:53,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-16 16:06:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:53,059 INFO L225 Difference]: With dead ends: 12 [2022-11-16 16:06:53,060 INFO L226 Difference]: Without dead ends: 9 [2022-11-16 16:06:53,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:06:53,067 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:53,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:06:53,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-16 16:06:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-16 16:06:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-16 16:06:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 16:06:53,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-11-16 16:06:53,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:53,074 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 16:06:53,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 16:06:53,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 16:06:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:06:53,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:53,075 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:53,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:06:53,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-16 16:06:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash -60838066, now seen corresponding path program 1 times [2022-11-16 16:06:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:53,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239713854] [2022-11-16 16:06:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:53,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:53,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239713854] [2022-11-16 16:06:53,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239713854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:06:53,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403485672] [2022-11-16 16:06:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:53,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:06:53,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:06:53,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:06:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:53,712 WARN L261 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 16:06:53,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:06:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:54,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:06:54,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:54,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-11-16 16:06:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:54,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403485672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:06:54,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [321680994] [2022-11-16 16:06:54,927 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-16 16:06:54,927 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:06:54,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:06:54,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:06:54,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:06:55,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 16:06:55,599 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:06:56,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '213#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 0 |ULTIMATE.start_cmemrchr_#in~s#1.offset|) (<= |ULTIMATE.start_cmemrchr_#in~c#1| 2147483647) (<= |ULTIMATE.start_cmemrchr_~s#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (<= 0 |ULTIMATE.start_cmemrchr_#in~s#1.base|) (= ~MAX~0 100000) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= 0 |ULTIMATE.start_cmemrchr_~s#1.offset|) (<= |ULTIMATE.start_cmemrchr_~n#1| 100000) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (or (not (<= 0 |ULTIMATE.start_cmemrchr_#t~pre3#1.offset|)) (not (<= (+ |ULTIMATE.start_cmemrchr_#t~pre3#1.offset| 1) (select |#length| |ULTIMATE.start_cmemrchr_#t~pre3#1.base|)))) (<= 0 |ULTIMATE.start_cmemrchr_~cp~0#1.base|) (<= 1 |ULTIMATE.start_cmemrchr_#in~n#1|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_cmemrchr_#t~pre3#1.base|) (<= 0 |ULTIMATE.start_cmemrchr_~s#1.base|) (<= 0 (+ |ULTIMATE.start_cmemrchr_~c#1| 2147483648)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_cmemrchr_#in~n#1| 100000) (<= 0 (+ |ULTIMATE.start_main_~c~0#1| 2147483648)) (<= |ULTIMATE.start_cmemrchr_#in~s#1.offset| 0) (<= |ULTIMATE.start_cmemrchr_~c#1| 2147483647) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_cmemrchr_#in~c#1| 2147483648)) (<= |ULTIMATE.start_main_~n~0#1| 100000) (= |#NULL.base| 0))' at error location [2022-11-16 16:06:56,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:06:56,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:06:56,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-16 16:06:56,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885564231] [2022-11-16 16:06:56,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:06:56,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 16:06:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 16:06:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-16 16:06:56,896 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-11-16 16:06:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:57,741 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-16 16:06:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 16:06:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 8 [2022-11-16 16:06:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:57,743 INFO L225 Difference]: With dead ends: 18 [2022-11-16 16:06:57,743 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 16:06:57,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 16:06:57,745 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:57,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 7 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:06:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 16:06:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-11-16 16:06:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-11-16 16:06:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-16 16:06:57,749 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2022-11-16 16:06:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:57,749 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-16 16:06:57,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-11-16 16:06:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-16 16:06:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 16:06:57,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:57,750 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1] [2022-11-16 16:06:57,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 16:06:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:57,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-16 16:06:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash -545506254, now seen corresponding path program 2 times [2022-11-16 16:06:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:57,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249329011] [2022-11-16 16:06:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:58,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:58,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249329011] [2022-11-16 16:06:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249329011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:06:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548794984] [2022-11-16 16:06:58,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:06:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:06:58,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:06:58,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:06:59,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 16:06:59,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:06:59,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 16:06:59,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:07:00,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:00,756 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:07:00,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-11-16 16:07:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:07:01,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548794984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:01,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [191170932] [2022-11-16 16:07:01,652 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-16 16:07:01,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:01,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:01,653 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:01,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:01,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 16:07:02,104 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:03,507 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '404#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 0 |ULTIMATE.start_cmemrchr_#in~s#1.offset|) (<= |ULTIMATE.start_cmemrchr_#in~c#1| 2147483647) (<= |ULTIMATE.start_cmemrchr_~s#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (<= 0 |ULTIMATE.start_cmemrchr_#in~s#1.base|) (= ~MAX~0 100000) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= 0 |ULTIMATE.start_cmemrchr_~s#1.offset|) (<= |ULTIMATE.start_cmemrchr_~n#1| 100000) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (or (not (<= 0 |ULTIMATE.start_cmemrchr_#t~pre3#1.offset|)) (not (<= (+ |ULTIMATE.start_cmemrchr_#t~pre3#1.offset| 1) (select |#length| |ULTIMATE.start_cmemrchr_#t~pre3#1.base|)))) (<= 0 |ULTIMATE.start_cmemrchr_~cp~0#1.base|) (<= 1 |ULTIMATE.start_cmemrchr_#in~n#1|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_cmemrchr_#t~pre3#1.base|) (<= 0 |ULTIMATE.start_cmemrchr_~s#1.base|) (<= 0 (+ |ULTIMATE.start_cmemrchr_~c#1| 2147483648)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_cmemrchr_#in~n#1| 100000) (<= 0 (+ |ULTIMATE.start_main_~c~0#1| 2147483648)) (<= |ULTIMATE.start_cmemrchr_#in~s#1.offset| 0) (<= |ULTIMATE.start_cmemrchr_~c#1| 2147483647) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_cmemrchr_#in~c#1| 2147483648)) (<= |ULTIMATE.start_main_~n~0#1| 100000) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:03,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:03,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:07:03,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 38 [2022-11-16 16:07:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523504584] [2022-11-16 16:07:03,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 16:07:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 16:07:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 16:07:03,511 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2022-11-16 16:07:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:06,587 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-16 16:07:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 16:07:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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 16 [2022-11-16 16:07:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:06,588 INFO L225 Difference]: With dead ends: 17 [2022-11-16 16:07:06,588 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:07:06,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=383, Invalid=2923, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 16:07:06,590 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:06,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:07:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:07:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:07:06,591 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) [2022-11-16 16:07:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:07:06,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-16 16:07:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:06,592 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:07:06,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2022-11-16 16:07:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:07:06,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:07:06,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-11-16 16:07:06,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-11-16 16:07:06,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-11-16 16:07:06,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:06,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 16:07:06,800 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-16 16:07:06,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:07:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:07:06 BoogieIcfgContainer [2022-11-16 16:07:06,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:07:06,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:07:06,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:07:06,807 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:07:06,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:06:51" (3/4) ... [2022-11-16 16:07:06,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 16:07:06,822 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-16 16:07:06,823 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 16:07:06,823 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 16:07:06,856 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:07:06,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:07:06,857 INFO L158 Benchmark]: Toolchain (without parser) took 16946.69ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 71.6MB in the beginning and 171.9MB in the end (delta: -100.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:07:06,858 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:07:06,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.98ms. Allocated memory is still 113.2MB. Free memory was 71.4MB in the beginning and 83.0MB in the end (delta: -11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:07:06,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.24ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:07:06,859 INFO L158 Benchmark]: Boogie Preprocessor took 41.52ms. Allocated memory is still 113.2MB. Free memory was 80.9MB in the beginning and 79.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:07:06,859 INFO L158 Benchmark]: RCFGBuilder took 544.35ms. Allocated memory is still 113.2MB. Free memory was 79.5MB in the beginning and 64.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 16:07:06,860 INFO L158 Benchmark]: TraceAbstraction took 15781.84ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 64.6MB in the beginning and 175.1MB in the end (delta: -110.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:07:06,861 INFO L158 Benchmark]: Witness Printer took 50.44ms. Allocated memory is still 211.8MB. Free memory was 175.1MB in the beginning and 171.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 16:07:06,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.98ms. Allocated memory is still 113.2MB. Free memory was 71.4MB in the beginning and 83.0MB in the end (delta: -11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.24ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.52ms. Allocated memory is still 113.2MB. Free memory was 80.9MB in the beginning and 79.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 544.35ms. Allocated memory is still 113.2MB. Free memory was 79.5MB in the beginning and 64.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15781.84ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 64.6MB in the beginning and 175.1MB in the end (delta: -110.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.44ms. Allocated memory is still 211.8MB. Free memory was 175.1MB in the beginning and 171.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 561]: 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 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 30 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=5, InterpolantAutomatonStates: 47, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1704 SizeOfPredicates, 25 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 3/60 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 16:07:06,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f6380-38e3-4b84-b1ea-8276854ec555/bin/utaipan-Xvt2sAort0/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