./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/c.02-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/c.02-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur --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 a7eac656f4f87b6afedc7c9123b2a00f0a77432e0932a24df49c305c8202e110 --- 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-38b53e6 [2022-11-25 22:33:56,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:33:56,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:33:56,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:33:56,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:33:56,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:33:56,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:33:56,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:33:56,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:33:56,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:33:56,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:33:56,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:33:56,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:33:56,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:33:56,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:33:56,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:33:56,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:33:56,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:33:56,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:33:56,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:33:56,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:33:56,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:33:56,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:33:56,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:33:56,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:33:56,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:33:56,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:33:56,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:33:56,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:33:56,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:33:56,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:33:56,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:33:56,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:33:56,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:33:56,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:33:56,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:33:56,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:33:56,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:33:56,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:33:56,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:33:56,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:33:56,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-25 22:33:56,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:33:56,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:33:56,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:33:56,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:33:56,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:33:56,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:33:56,395 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:33:56,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:33:56,396 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:33:56,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:33:56,397 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:33:56,397 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:33:56,398 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:33:56,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:33:56,398 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:33:56,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:33:56,399 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:33:56,399 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:33:56,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 22:33:56,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 22:33:56,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:33:56,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:33:56,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:33:56,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:33:56,401 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 22:33:56,401 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 22:33:56,402 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 22:33:56,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:33:56,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:33:56,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:33:56,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:33:56,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:33:56,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:33:56,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:33:56,404 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:33:56,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:33:56,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:33:56,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:33:56,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:33:56,405 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_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7eac656f4f87b6afedc7c9123b2a00f0a77432e0932a24df49c305c8202e110 [2022-11-25 22:33:56,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:33:56,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:33:56,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:33:56,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:33:56,736 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:33:56,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/termination-memory-alloca/c.02-alloca.i [2022-11-25 22:33:59,933 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:34:00,167 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:34:00,167 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/sv-benchmarks/c/termination-memory-alloca/c.02-alloca.i [2022-11-25 22:34:00,184 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/data/c6191cdcf/ca1b45d7df174730962806772522ecae/FLAGc23d19eeb [2022-11-25 22:34:00,202 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/data/c6191cdcf/ca1b45d7df174730962806772522ecae [2022-11-25 22:34:00,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:34:00,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:34:00,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:34:00,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:34:00,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:34:00,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad2e1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00, skipping insertion in model container [2022-11-25 22:34:00,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:34:00,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:34:00,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:34:00,651 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:34:00,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:34:00,742 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:34:00,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00 WrapperNode [2022-11-25 22:34:00,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:34:00,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:34:00,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:34:00,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:34:00,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,816 INFO L138 Inliner]: procedures = 111, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2022-11-25 22:34:00,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:34:00,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:34:00,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:34:00,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:34:00,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:34:00,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:34:00,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:34:00,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:34:00,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (1/1) ... [2022-11-25 22:34:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:34:00,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:34:00,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:34:00,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:34:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:34:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:34:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:34:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:34:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:34:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:34:01,123 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:34:01,125 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:34:01,461 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:34:01,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:34:01,509 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 22:34:01,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:34:01 BoogieIcfgContainer [2022-11-25 22:34:01,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:34:01,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:34:01,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:34:01,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:34:01,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:34:00" (1/3) ... [2022-11-25 22:34:01,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af64ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:34:01, skipping insertion in model container [2022-11-25 22:34:01,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:00" (2/3) ... [2022-11-25 22:34:01,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af64ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:34:01, skipping insertion in model container [2022-11-25 22:34:01,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:34:01" (3/3) ... [2022-11-25 22:34:01,523 INFO L112 eAbstractionObserver]: Analyzing ICFG c.02-alloca.i [2022-11-25 22:34:01,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:34:01,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-25 22:34:01,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:34:01,633 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;@4d958f65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:34:01,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 22:34:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 20 states have (on average 2.8) internal successors, (56), 51 states have internal predecessors, (56), 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) [2022-11-25 22:34:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 22:34:01,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:01,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 22:34:01,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash 3941, now seen corresponding path program 1 times [2022-11-25 22:34:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:01,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690249476] [2022-11-25 22:34:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:01,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:02,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:02,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690249476] [2022-11-25 22:34:02,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690249476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:02,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:02,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:34:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841917974] [2022-11-25 22:34:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:02,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:34:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:34:02,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:34:02,452 INFO L87 Difference]: Start difference. First operand has 52 states, 20 states have (on average 2.8) internal successors, (56), 51 states have internal predecessors, (56), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-25 22:34:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:02,582 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-11-25 22:34:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:34:02,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-25 22:34:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:02,594 INFO L225 Difference]: With dead ends: 44 [2022-11-25 22:34:02,594 INFO L226 Difference]: Without dead ends: 43 [2022-11-25 22:34:02,596 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 [2022-11-25 22:34:02,600 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:02,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 14 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:34:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-25 22:34:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-25 22:34:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 20 states have (on average 2.25) internal successors, (45), 42 states have internal predecessors, (45), 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) [2022-11-25 22:34:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-11-25 22:34:02,641 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 2 [2022-11-25 22:34:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:02,642 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-11-25 22:34:02,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-25 22:34:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-11-25 22:34:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 22:34:02,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:02,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 22:34:02,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:34:02,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 3942, now seen corresponding path program 1 times [2022-11-25 22:34:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:02,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342010515] [2022-11-25 22:34:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:02,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342010515] [2022-11-25 22:34:02,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342010515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:02,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:02,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:34:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226162088] [2022-11-25 22:34:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:02,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:34:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:02,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:34:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:34:02,775 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-25 22:34:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:02,835 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-11-25 22:34:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:34:02,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-25 22:34:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:02,837 INFO L225 Difference]: With dead ends: 35 [2022-11-25 22:34:02,837 INFO L226 Difference]: Without dead ends: 35 [2022-11-25 22:34:02,837 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 [2022-11-25 22:34:02,839 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:02,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 14 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:34:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-25 22:34:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-25 22:34:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.85) internal successors, (37), 34 states have internal predecessors, (37), 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) [2022-11-25 22:34:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-11-25 22:34:02,845 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 2 [2022-11-25 22:34:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:02,846 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-11-25 22:34:02,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-25 22:34:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-11-25 22:34:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:34:02,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:02,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:34:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:34:02,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash 122147, now seen corresponding path program 1 times [2022-11-25 22:34:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:02,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701861926] [2022-11-25 22:34:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:02,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701861926] [2022-11-25 22:34:02,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701861926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:02,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:02,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:34:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914736792] [2022-11-25 22:34:02,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:02,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:34:02,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:34:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:34:02,927 INFO L87 Difference]: Start difference. First operand 35 states and 37 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) [2022-11-25 22:34:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:02,977 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-25 22:34:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:34:02,978 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 [2022-11-25 22:34:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:02,979 INFO L225 Difference]: With dead ends: 30 [2022-11-25 22:34:02,979 INFO L226 Difference]: Without dead ends: 30 [2022-11-25 22:34:02,980 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 [2022-11-25 22:34:02,981 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:02,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:34:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-25 22:34:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-25 22:34:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.6) internal successors, (32), 29 states have internal predecessors, (32), 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) [2022-11-25 22:34:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-11-25 22:34:02,987 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 3 [2022-11-25 22:34:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:02,987 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-11-25 22:34:02,988 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) [2022-11-25 22:34:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-11-25 22:34:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:34:02,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:02,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:34:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:34:02,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash 122148, now seen corresponding path program 1 times [2022-11-25 22:34:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:02,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063697612] [2022-11-25 22:34:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:03,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:03,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063697612] [2022-11-25 22:34:03,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063697612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:03,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:03,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:34:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526509319] [2022-11-25 22:34:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:34:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:03,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:34:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:34:03,226 INFO L87 Difference]: Start difference. First operand 30 states and 32 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) [2022-11-25 22:34:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:03,298 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-11-25 22:34:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:34:03,299 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 [2022-11-25 22:34:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:03,300 INFO L225 Difference]: With dead ends: 25 [2022-11-25 22:34:03,300 INFO L226 Difference]: Without dead ends: 25 [2022-11-25 22:34:03,300 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 [2022-11-25 22:34:03,301 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:03,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:34:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-25 22:34:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-25 22:34:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-25 22:34:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-25 22:34:03,317 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 3 [2022-11-25 22:34:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:03,318 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-25 22:34:03,318 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) [2022-11-25 22:34:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-25 22:34:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:34:03,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:03,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:34:03,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:34:03,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 3786536, now seen corresponding path program 1 times [2022-11-25 22:34:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:03,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470043269] [2022-11-25 22:34:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:03,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:03,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:03,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470043269] [2022-11-25 22:34:03,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470043269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:03,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:03,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:34:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73218076] [2022-11-25 22:34:03,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:03,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:34:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:34:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:34:03,394 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 22:34:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:03,461 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-25 22:34:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:34:03,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-11-25 22:34:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:03,462 INFO L225 Difference]: With dead ends: 23 [2022-11-25 22:34:03,463 INFO L226 Difference]: Without dead ends: 23 [2022-11-25 22:34:03,463 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 [2022-11-25 22:34:03,468 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:03,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:34:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-25 22:34:03,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-25 22:34:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 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) [2022-11-25 22:34:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-25 22:34:03,480 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2022-11-25 22:34:03,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:03,481 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-25 22:34:03,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 22:34:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-25 22:34:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:34:03,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:03,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:34:03,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:34:03,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 3786537, now seen corresponding path program 1 times [2022-11-25 22:34:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:03,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643314613] [2022-11-25 22:34:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:03,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:03,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643314613] [2022-11-25 22:34:03,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643314613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:03,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:03,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:34:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978811741] [2022-11-25 22:34:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:03,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:34:03,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:34:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:34:03,587 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 22:34:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:03,624 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-25 22:34:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:34:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-11-25 22:34:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:03,625 INFO L225 Difference]: With dead ends: 21 [2022-11-25 22:34:03,625 INFO L226 Difference]: Without dead ends: 21 [2022-11-25 22:34:03,626 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 [2022-11-25 22:34:03,629 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:03,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:34:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-25 22:34:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-25 22:34:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-11-25 22:34:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-25 22:34:03,640 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 4 [2022-11-25 22:34:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:03,641 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-25 22:34:03,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 22:34:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-25 22:34:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:34:03,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:03,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:34:03,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 22:34:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 391715536, now seen corresponding path program 1 times [2022-11-25 22:34:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:34:03,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469518374] [2022-11-25 22:34:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:34:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:04,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:04,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469518374] [2022-11-25 22:34:04,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469518374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:04,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:04,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:34:04,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697308187] [2022-11-25 22:34:04,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:04,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:34:04,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:34:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:34:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:34:04,074 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-25 22:34:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:04,126 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-25 22:34:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:34:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2022-11-25 22:34:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:04,127 INFO L225 Difference]: With dead ends: 20 [2022-11-25 22:34:04,128 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 22:34:04,129 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 [2022-11-25 22:34:04,132 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:04,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 12 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:34:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 22:34:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 22:34:04,135 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) [2022-11-25 22:34:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 22:34:04,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-11-25 22:34:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:04,136 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 22:34:04,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-25 22:34:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 22:34:04,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 22:34:04,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2022-11-25 22:34:04,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2022-11-25 22:34:04,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-25 22:34:04,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-25 22:34:04,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-11-25 22:34:04,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2022-11-25 22:34:04,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-11-25 22:34:04,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-11-25 22:34:04,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-25 22:34:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-25 22:34:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2022-11-25 22:34:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-11-25 22:34:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-11-25 22:34:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-25 22:34:04,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-25 22:34:04,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-25 22:34:04,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-25 22:34:04,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-25 22:34:04,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-25 22:34:04,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-11-25 22:34:04,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-11-25 22:34:04,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-11-25 22:34:04,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-11-25 22:34:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-25 22:34:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-25 22:34:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-25 22:34:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-25 22:34:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-25 22:34:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-25 22:34:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2022-11-25 22:34:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2022-11-25 22:34:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:34:04,155 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:04,158 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:34:04,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:34:04 BoogieIcfgContainer [2022-11-25 22:34:04,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:34:04,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:34:04,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:34:04,162 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:34:04,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:34:01" (3/4) ... [2022-11-25 22:34:04,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 22:34:04,186 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-25 22:34:04,186 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 22:34:04,186 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 22:34:04,187 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 22:34:04,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:34:04,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:34:04,242 INFO L158 Benchmark]: Toolchain (without parser) took 4035.68ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 82.3MB in the end (delta: 57.5MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,243 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:34:04,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.94ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 124.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.88ms. Allocated memory is still 184.5MB. Free memory was 123.6MB in the beginning and 122.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,244 INFO L158 Benchmark]: Boogie Preprocessor took 56.78ms. Allocated memory is still 184.5MB. Free memory was 122.0MB in the beginning and 120.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,245 INFO L158 Benchmark]: RCFGBuilder took 637.89ms. Allocated memory is still 184.5MB. Free memory was 120.4MB in the beginning and 103.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,245 INFO L158 Benchmark]: TraceAbstraction took 2646.38ms. Allocated memory is still 184.5MB. Free memory was 102.1MB in the beginning and 86.5MB in the end (delta: 15.6MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,245 INFO L158 Benchmark]: Witness Printer took 79.95ms. Allocated memory is still 184.5MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:34:04,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.94ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 124.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.88ms. Allocated memory is still 184.5MB. Free memory was 123.6MB in the beginning and 122.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.78ms. Allocated memory is still 184.5MB. Free memory was 122.0MB in the beginning and 120.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 637.89ms. Allocated memory is still 184.5MB. Free memory was 120.4MB in the beginning and 103.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2646.38ms. Allocated memory is still 184.5MB. Free memory was 102.1MB in the beginning and 86.5MB in the end (delta: 15.6MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Witness Printer took 79.95ms. Allocated memory is still 184.5MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). 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: -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: -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: -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: -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: -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: 565]: 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, 52 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 169 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 66 mSDtfsCounter, 169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 22:34:04,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b42b2a8-702c-4c37-82ed-a24784dc15e8/bin/utaipan-ByfvJB40ur/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