./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b --- 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-b5237d8 [2022-11-22 00:07:54,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:07:54,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:07:54,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:07:54,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:07:54,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:07:54,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:07:54,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:07:54,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:07:54,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:07:54,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:07:54,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:07:54,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:07:54,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:07:54,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:07:54,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:07:54,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:07:54,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:07:54,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:07:54,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:07:54,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:07:54,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:07:54,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:07:54,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:07:54,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:07:54,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:07:54,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:07:54,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:07:54,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:07:54,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:07:54,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:07:54,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:07:54,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:07:54,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:07:54,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:07:54,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:07:54,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:07:54,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:07:54,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:07:54,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:07:54,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:07:54,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 00:07:54,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:07:54,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:07:54,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:07:54,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:07:54,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:07:54,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:07:54,743 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:07:54,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:07:54,743 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:07:54,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:07:54,745 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:07:54,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:07:54,746 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:07:54,746 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:07:54,746 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:07:54,746 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:07:54,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:07:54,747 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:07:54,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 00:07:54,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 00:07:54,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:07:54,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:07:54,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:07:54,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:07:54,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:07:54,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:07:54,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 00:07:54,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 00:07:54,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 00:07:54,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:07:54,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 00:07:54,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:07:54,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:07:54,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:07:54,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:07:54,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:07:54,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:07:54,753 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:07:54,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:07:54,754 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:07:54,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:07:54,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:07:54,754 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_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b [2022-11-22 00:07:55,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:07:55,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:07:55,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:07:55,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:07:55,152 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:07:55,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2022-11-22 00:07:58,630 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:07:58,873 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:07:58,874 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2022-11-22 00:07:58,882 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/data/b86f80c44/a8a5d9e9ecaa419386b72ba5e8c53c8b/FLAGc58f58e9f [2022-11-22 00:07:58,904 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/data/b86f80c44/a8a5d9e9ecaa419386b72ba5e8c53c8b [2022-11-22 00:07:58,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:07:58,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:07:58,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:07:58,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:07:58,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:07:58,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:07:58" (1/1) ... [2022-11-22 00:07:58,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c35ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:58, skipping insertion in model container [2022-11-22 00:07:58,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:07:58" (1/1) ... [2022-11-22 00:07:58,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:07:58,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:07:59,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:07:59,094 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:07:59,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:07:59,125 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:07:59,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59 WrapperNode [2022-11-22 00:07:59,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:07:59,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:07:59,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:07:59,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:07:59,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,163 INFO L138 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2022-11-22 00:07:59,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:07:59,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:07:59,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:07:59,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:07:59,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:07:59,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:07:59,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:07:59,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:07:59,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (1/1) ... [2022-11-22 00:07:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:07:59,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:07:59,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:07:59,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:07:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:07:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:07:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:07:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:07:59,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:07:59,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:07:59,419 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:07:59,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:07:59,782 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:07:59,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:07:59,920 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 00:07:59,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:07:59 BoogieIcfgContainer [2022-11-22 00:07:59,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:07:59,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:07:59,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:07:59,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:07:59,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:07:58" (1/3) ... [2022-11-22 00:07:59,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b322039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:07:59, skipping insertion in model container [2022-11-22 00:07:59,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:59" (2/3) ... [2022-11-22 00:07:59,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b322039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:07:59, skipping insertion in model container [2022-11-22 00:07:59,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:07:59" (3/3) ... [2022-11-22 00:07:59,935 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2022-11-22 00:07:59,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:07:59,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-22 00:08:00,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:08:00,043 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;@35f77831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:08:00,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-22 00:08:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-11-22 00:08:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:08:00,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:00,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:08:00,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-22 00:08:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash 4075446, now seen corresponding path program 1 times [2022-11-22 00:08:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:00,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599240015] [2022-11-22 00:08:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:00,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:00,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599240015] [2022-11-22 00:08:00,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599240015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:00,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:00,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:00,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437697363] [2022-11-22 00:08:00,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:00,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:00,346 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 23 states have internal predecessors, (28), 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, 3 states have (on average 1.3333333333333333) 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) [2022-11-22 00:08:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:00,480 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-22 00:08:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:00,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-22 00:08:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:00,493 INFO L225 Difference]: With dead ends: 39 [2022-11-22 00:08:00,493 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 00:08:00,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:00,500 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:00,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 00:08:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2022-11-22 00:08:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 2.076923076923077) internal successors, (27), 23 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) [2022-11-22 00:08:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 00:08:00,534 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 4 [2022-11-22 00:08:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:00,534 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 00:08:00,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-22 00:08:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 00:08:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:08:00,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:00,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:08:00,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:08:00,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-22 00:08:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash 3972391, now seen corresponding path program 1 times [2022-11-22 00:08:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:00,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550816929] [2022-11-22 00:08:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:00,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:00,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550816929] [2022-11-22 00:08:00,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550816929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:00,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:00,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868261494] [2022-11-22 00:08:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:00,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:08:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:08:00,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:08:00,819 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-22 00:08:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:00,911 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-22 00:08:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:08:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2022-11-22 00:08:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:00,914 INFO L225 Difference]: With dead ends: 22 [2022-11-22 00:08:00,916 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 00:08:00,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:08:00,920 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:00,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 00:08:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-22 00:08:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 21 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) [2022-11-22 00:08:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-22 00:08:00,932 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2022-11-22 00:08:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:00,933 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-22 00:08:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-22 00:08:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-22 00:08:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:08:00,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:00,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:08:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:08:00,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-22 00:08:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash 3972392, now seen corresponding path program 1 times [2022-11-22 00:08:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:00,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104066024] [2022-11-22 00:08:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:00,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:01,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:01,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104066024] [2022-11-22 00:08:01,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104066024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:01,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:01,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282613411] [2022-11-22 00:08:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:08:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:01,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:08:01,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:08:01,258 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-22 00:08:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:01,476 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-11-22 00:08:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:08:01,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2022-11-22 00:08:01,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:01,480 INFO L225 Difference]: With dead ends: 51 [2022-11-22 00:08:01,481 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 00:08:01,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:08:01,490 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:01,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 14 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 00:08:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 24. [2022-11-22 00:08:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-11-22 00:08:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-22 00:08:01,504 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 4 [2022-11-22 00:08:01,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:01,505 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-22 00:08:01,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-22 00:08:01,506 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-22 00:08:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:08:01,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:01,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:08:01,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:08:01,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-22 00:08:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash 123235085, now seen corresponding path program 1 times [2022-11-22 00:08:01,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:01,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628630736] [2022-11-22 00:08:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:01,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:01,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:01,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628630736] [2022-11-22 00:08:01,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628630736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:01,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:01,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:08:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647053055] [2022-11-22 00:08:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:01,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:08:01,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:01,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:08:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:08:01,661 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:01,730 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-11-22 00:08:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:08:01,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:08:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:01,733 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:08:01,733 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 00:08:01,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:08:01,742 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:01,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:08:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 00:08:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-22 00:08:01,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-11-22 00:08:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-22 00:08:01,747 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2022-11-22 00:08:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:01,747 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-22 00:08:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-22 00:08:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:08:01,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:01,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:08:01,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:08:01,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-22 00:08:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 123144113, now seen corresponding path program 1 times [2022-11-22 00:08:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:01,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810803196] [2022-11-22 00:08:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:01,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810803196] [2022-11-22 00:08:01,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810803196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:01,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:01,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264406723] [2022-11-22 00:08:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:01,819 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:01,853 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-11-22 00:08:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:08:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:01,854 INFO L225 Difference]: With dead ends: 24 [2022-11-22 00:08:01,855 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 00:08:01,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:01,857 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:01,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:08:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 00:08:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 00:08:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.6875) internal successors, (27), 23 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) [2022-11-22 00:08:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 00:08:01,865 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2022-11-22 00:08:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:01,866 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 00:08:01,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 00:08:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:08:01,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:01,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:08:01,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:08:01,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-22 00:08:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 123144114, now seen corresponding path program 1 times [2022-11-22 00:08:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:01,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117792041] [2022-11-22 00:08:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:08:01,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:08:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:08:01,928 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:08:01,929 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:08:01,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-11-22 00:08:01,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-11-22 00:08:01,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-22 00:08:01,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-22 00:08:01,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-11-22 00:08:01,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-22 00:08:01,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2022-11-22 00:08:01,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2022-11-22 00:08:01,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2022-11-22 00:08:01,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2022-11-22 00:08:01,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2022-11-22 00:08:01,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:08:01,939 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-22 00:08:01,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:08:01,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:08:01 BoogieIcfgContainer [2022-11-22 00:08:01,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:08:01,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:08:01,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:08:01,974 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:08:01,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:07:59" (3/4) ... [2022-11-22 00:08:01,976 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 00:08:02,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:08:02,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:08:02,024 INFO L158 Benchmark]: Toolchain (without parser) took 3113.89ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 89.5MB in the beginning and 115.5MB in the end (delta: -26.0MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,024 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:08:02,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.04ms. Allocated memory is still 134.2MB. Free memory was 89.5MB in the beginning and 79.4MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.88ms. Allocated memory is still 134.2MB. Free memory was 79.4MB in the beginning and 77.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,025 INFO L158 Benchmark]: Boogie Preprocessor took 56.40ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 76.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,025 INFO L158 Benchmark]: RCFGBuilder took 701.78ms. Allocated memory is still 134.2MB. Free memory was 76.5MB in the beginning and 104.9MB in the end (delta: -28.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,026 INFO L158 Benchmark]: TraceAbstraction took 2046.67ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 104.2MB in the beginning and 117.6MB in the end (delta: -13.3MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,026 INFO L158 Benchmark]: Witness Printer took 49.40ms. Allocated memory is still 176.2MB. Free memory was 117.6MB in the beginning and 115.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:08:02,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.04ms. Allocated memory is still 134.2MB. Free memory was 89.5MB in the beginning and 79.4MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.88ms. Allocated memory is still 134.2MB. Free memory was 79.4MB in the beginning and 77.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.40ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 76.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 701.78ms. Allocated memory is still 134.2MB. Free memory was 76.5MB in the beginning and 104.9MB in the end (delta: -28.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2046.67ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 104.2MB in the beginning and 117.6MB in the end (delta: -13.3MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 49.40ms. Allocated memory is still 176.2MB. Free memory was 117.6MB in the beginning and 115.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 [L34] CALL foo(i, b, i + 1) [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=401, i=0, n=0, size=1] [L23] a[i] = b[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 45 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 86 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-22 00:08:02,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f943bc6c-6a64-4abe-8265-7d0a71fce932/bin/utaipan-g80aRyZoba/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)