./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.13-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/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_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.13-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/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 64bit --witnessprinter.graph.data.programhash e86ab88515027c2a8ad7a1a5d7cd34e589814e2f5fa9f70f400cd1ca5df85524 --- 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 01:09:01,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:09:01,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:09:01,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:09:01,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:09:01,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:09:01,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:09:01,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:09:01,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:09:01,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:09:01,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:09:01,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:09:01,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:09:01,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:09:01,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:09:01,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:09:01,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:09:01,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:09:01,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:09:01,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:09:01,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:09:01,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:09:01,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:09:01,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:09:01,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:09:01,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:09:01,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:09:01,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:09:01,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:09:01,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:09:01,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:09:01,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:09:01,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:09:01,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:09:01,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:09:01,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:09:01,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:09:01,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:09:01,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:09:01,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:09:01,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:09:01,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-22 01:09:01,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:09:01,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:09:01,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:09:01,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:09:01,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:09:01,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:09:01,792 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:09:01,793 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:09:01,793 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:09:01,793 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:09:01,793 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:09:01,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:09:01,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:09:01,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:09:01,794 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:09:01,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:09:01,794 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:09:01,794 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:09:01,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:09:01,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:09:01,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:09:01,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:09:01,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:09:01,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:09:01,801 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:09:01,801 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:09:01,801 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:09:01,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:09:01,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:09:01,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:09:01,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:09:01,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:09:01,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:09:01,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:09:01,804 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:09:01,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:09:01,805 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:09:01,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:09:01,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:09:01,805 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_06d5cb27-0a6c-4022-9a5e-404ed27fb305/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e86ab88515027c2a8ad7a1a5d7cd34e589814e2f5fa9f70f400cd1ca5df85524 [2022-11-22 01:09:02,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:09:02,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:09:02,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:09:02,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:09:02,121 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:09:02,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-memory-alloca/b.13-alloca.i [2022-11-22 01:09:05,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:09:05,426 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:09:05,427 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/sv-benchmarks/c/termination-memory-alloca/b.13-alloca.i [2022-11-22 01:09:05,443 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/data/024aa5eb9/dac3b77a97b04bb8a0f154b9df7f9292/FLAGa634aa39f [2022-11-22 01:09:05,463 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/data/024aa5eb9/dac3b77a97b04bb8a0f154b9df7f9292 [2022-11-22 01:09:05,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:09:05,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:09:05,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:09:05,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:09:05,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:09:05,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:05,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca0f590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05, skipping insertion in model container [2022-11-22 01:09:05,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:05,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:09:05,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:09:05,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:09:05,874 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:09:05,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:09:05,940 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:09:05,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05 WrapperNode [2022-11-22 01:09:05,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:09:05,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:09:05,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:09:05,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:09:05,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:05,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:05,990 INFO L138 Inliner]: procedures = 111, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-11-22 01:09:05,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:09:05,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:09:05,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:09:05,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:09:06,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,041 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:09:06,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:09:06,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:09:06,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:09:06,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2022-11-22 01:09:06,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:09:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:09:06,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:09:06,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:09:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:09:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:09:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:09:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:09:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:09:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:09:06,240 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:09:06,242 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:09:06,714 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:09:06,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:09:06,760 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:09:06,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:06 BoogieIcfgContainer [2022-11-22 01:09:06,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:09:06,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:09:06,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:09:06,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:09:06,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:09:05" (1/3) ... [2022-11-22 01:09:06,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c7e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:06, skipping insertion in model container [2022-11-22 01:09:06,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (2/3) ... [2022-11-22 01:09:06,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c7e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:06, skipping insertion in model container [2022-11-22 01:09:06,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:06" (3/3) ... [2022-11-22 01:09:06,779 INFO L112 eAbstractionObserver]: Analyzing ICFG b.13-alloca.i [2022-11-22 01:09:06,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:09:06,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-11-22 01:09:06,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:09:06,840 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;@5036162e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:09:06,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-22 01:09:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 23 states have (on average 2.739130434782609) internal successors, (63), 58 states have internal predecessors, (63), 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 01:09:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:09:06,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:06,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:09:06,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:06,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 4003, now seen corresponding path program 1 times [2022-11-22 01:09:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:06,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515690792] [2022-11-22 01:09:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:07,568 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 01:09:07,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515690792] [2022-11-22 01:09:07,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515690792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:07,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:07,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:07,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827353751] [2022-11-22 01:09:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:07,609 INFO L87 Difference]: Start difference. First operand has 59 states, 23 states have (on average 2.739130434782609) internal successors, (63), 58 states have internal predecessors, (63), 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) [2022-11-22 01:09:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:07,733 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-11-22 01:09:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:07,735 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 [2022-11-22 01:09:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:07,748 INFO L225 Difference]: With dead ends: 54 [2022-11-22 01:09:07,748 INFO L226 Difference]: Without dead ends: 53 [2022-11-22 01:09:07,750 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 [2022-11-22 01:09:07,756 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:07,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 21 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-22 01:09:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-22 01:09:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 52 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) [2022-11-22 01:09:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-11-22 01:09:07,799 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 2 [2022-11-22 01:09:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:07,800 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-11-22 01:09:07,800 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) [2022-11-22 01:09:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-11-22 01:09:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:09:07,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:07,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:09:07,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:09:07,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash 4004, now seen corresponding path program 1 times [2022-11-22 01:09:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:07,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022530246] [2022-11-22 01:09:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:08,124 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 01:09:08,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:08,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022530246] [2022-11-22 01:09:08,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022530246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:08,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:08,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631116268] [2022-11-22 01:09:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:08,128 INFO L87 Difference]: Start difference. First operand 53 states and 56 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) [2022-11-22 01:09:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:08,205 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-11-22 01:09:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:08,206 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 [2022-11-22 01:09:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:08,207 INFO L225 Difference]: With dead ends: 48 [2022-11-22 01:09:08,207 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:09:08,211 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 [2022-11-22 01:09:08,213 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:08,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:09:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-22 01:09:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 2.217391304347826) internal successors, (51), 47 states have internal predecessors, (51), 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 01:09:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-11-22 01:09:08,225 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 2 [2022-11-22 01:09:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:08,225 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-11-22 01:09:08,226 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) [2022-11-22 01:09:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-11-22 01:09:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:09:08,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:08,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:09:08,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:09:08,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 124069, now seen corresponding path program 1 times [2022-11-22 01:09:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:08,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550746199] [2022-11-22 01:09:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:08,321 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 01:09:08,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:08,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550746199] [2022-11-22 01:09:08,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550746199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:08,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:08,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:08,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982940066] [2022-11-22 01:09:08,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:08,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:08,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:08,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:08,324 INFO L87 Difference]: Start difference. First operand 48 states and 51 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) [2022-11-22 01:09:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:08,373 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-11-22 01:09:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:08,374 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 [2022-11-22 01:09:08,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:08,374 INFO L225 Difference]: With dead ends: 43 [2022-11-22 01:09:08,375 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 01:09:08,375 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 [2022-11-22 01:09:08,376 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:08,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 01:09:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-22 01:09:08,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 2.0) internal successors, (46), 42 states have internal predecessors, (46), 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 01:09:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-11-22 01:09:08,381 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 3 [2022-11-22 01:09:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:08,382 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-11-22 01:09:08,382 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) [2022-11-22 01:09:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-11-22 01:09:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:09:08,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:08,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:09:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:09:08,383 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 124070, now seen corresponding path program 1 times [2022-11-22 01:09:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:08,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242890631] [2022-11-22 01:09:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:08,509 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 01:09:08,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242890631] [2022-11-22 01:09:08,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242890631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:08,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:08,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300890276] [2022-11-22 01:09:08,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:08,513 INFO L87 Difference]: Start difference. First operand 43 states and 46 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) [2022-11-22 01:09:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:08,559 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-11-22 01:09:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:08,560 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 [2022-11-22 01:09:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:08,560 INFO L225 Difference]: With dead ends: 38 [2022-11-22 01:09:08,560 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:09:08,561 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 [2022-11-22 01:09:08,562 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 16 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 [2022-11-22 01:09:08,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 16 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:09:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-22 01:09:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 37 states have internal predecessors, (41), 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 01:09:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-11-22 01:09:08,566 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 3 [2022-11-22 01:09:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:08,567 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-11-22 01:09:08,567 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) [2022-11-22 01:09:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-11-22 01:09:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:09:08,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:08,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:09:08,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:09:08,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:08,569 INFO L85 PathProgramCache]: Analyzing trace with hash 3846118, now seen corresponding path program 1 times [2022-11-22 01:09:08,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:08,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887608469] [2022-11-22 01:09:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:08,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:08,641 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 01:09:08,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:08,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887608469] [2022-11-22 01:09:08,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887608469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:08,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:08,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539236254] [2022-11-22 01:09:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:08,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:08,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:08,644 INFO L87 Difference]: Start difference. First operand 38 states and 41 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) [2022-11-22 01:09:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:08,691 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-22 01:09:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:08,691 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 [2022-11-22 01:09:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:08,692 INFO L225 Difference]: With dead ends: 33 [2022-11-22 01:09:08,692 INFO L226 Difference]: Without dead ends: 33 [2022-11-22 01:09:08,693 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 [2022-11-22 01:09:08,694 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 11 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-22 01:09:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-22 01:09:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.565217391304348) internal successors, (36), 32 states have internal predecessors, (36), 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 01:09:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-22 01:09:08,698 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 4 [2022-11-22 01:09:08,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:08,698 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-22 01:09:08,699 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) [2022-11-22 01:09:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-22 01:09:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:09:08,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:08,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:09:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:09:08,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 3846119, now seen corresponding path program 1 times [2022-11-22 01:09:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:08,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290634237] [2022-11-22 01:09:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:08,820 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 01:09:08,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:08,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290634237] [2022-11-22 01:09:08,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290634237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:08,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:08,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721766229] [2022-11-22 01:09:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:08,823 INFO L87 Difference]: Start difference. First operand 33 states and 36 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) [2022-11-22 01:09:08,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:08,861 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-22 01:09:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:08,861 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 [2022-11-22 01:09:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:08,862 INFO L225 Difference]: With dead ends: 28 [2022-11-22 01:09:08,862 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 01:09:08,863 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 [2022-11-22 01:09:08,863 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:08,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 01:09:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-22 01:09:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 27 states have internal predecessors, (31), 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 01:09:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-22 01:09:08,867 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 4 [2022-11-22 01:09:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:08,867 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-22 01:09:08,868 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) [2022-11-22 01:09:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-22 01:09:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:09:08,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:08,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:09:08,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:09:08,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 119229640, now seen corresponding path program 1 times [2022-11-22 01:09:08,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:08,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089752612] [2022-11-22 01:09:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:08,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:08,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089752612] [2022-11-22 01:09:08,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089752612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:08,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:08,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202782915] [2022-11-22 01:09:08,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:08,927 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:08,960 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-22 01:09:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:09:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:08,961 INFO L225 Difference]: With dead ends: 26 [2022-11-22 01:09:08,961 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:09:08,961 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 [2022-11-22 01:09:08,962 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:08,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:09:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-22 01:09:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 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 01:09:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-22 01:09:08,966 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2022-11-22 01:09:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:08,966 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-22 01:09:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-22 01:09:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:09:08,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:08,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:09:08,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:09:08,968 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash 119229641, now seen corresponding path program 1 times [2022-11-22 01:09:08,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:08,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656182453] [2022-11-22 01:09:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:09,041 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 01:09:09,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:09,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656182453] [2022-11-22 01:09:09,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656182453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:09,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:09,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:09:09,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029527916] [2022-11-22 01:09:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:09,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:09,044 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:09,073 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-11-22 01:09:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:09,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:09:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:09,075 INFO L225 Difference]: With dead ends: 24 [2022-11-22 01:09:09,075 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 01:09:09,076 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 [2022-11-22 01:09:09,079 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:09,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 01:09:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 01:09:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) 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 01:09:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 01:09:09,086 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2022-11-22 01:09:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:09,086 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 01:09:09,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 01:09:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:09:09,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:09,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:09:09,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:09:09,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1521031553, now seen corresponding path program 1 times [2022-11-22 01:09:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494636894] [2022-11-22 01:09:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:09,123 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 01:09:09,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:09,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494636894] [2022-11-22 01:09:09,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494636894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:09,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:09,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:09:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556025141] [2022-11-22 01:09:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:09,126 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 01:09:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:09,145 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-11-22 01:09:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:09,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-22 01:09:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:09,146 INFO L225 Difference]: With dead ends: 25 [2022-11-22 01:09:09,147 INFO L226 Difference]: Without dead ends: 25 [2022-11-22 01:09:09,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:09,148 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:09,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:09:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-22 01:09:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-22 01:09:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) 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 01:09:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-22 01:09:09,151 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2022-11-22 01:09:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-22 01:09:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 01:09:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-22 01:09:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:09:09,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:09,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:09:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:09:09,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-11-22 01:09:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1374523266, now seen corresponding path program 1 times [2022-11-22 01:09:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009637363] [2022-11-22 01:09:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:09,818 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 01:09:09,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:09,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009637363] [2022-11-22 01:09:09,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009637363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:09,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:09,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:09:09,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696889441] [2022-11-22 01:09:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:09,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:09:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:09:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:09:09,821 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:09,886 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-11-22 01:09:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:09:09,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:09:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:09,887 INFO L225 Difference]: With dead ends: 24 [2022-11-22 01:09:09,887 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:09:09,888 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 [2022-11-22 01:09:09,888 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:09,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:09:09,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:09:09,890 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) [2022-11-22 01:09:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:09:09,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-22 01:09:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:09,891 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:09:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:09:09,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:09:09,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 35 remaining) [2022-11-22 01:09:09,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 35 remaining) [2022-11-22 01:09:09,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 35 remaining) [2022-11-22 01:09:09,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 35 remaining) [2022-11-22 01:09:09,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 35 remaining) [2022-11-22 01:09:09,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 35 remaining) [2022-11-22 01:09:09,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 35 remaining) [2022-11-22 01:09:09,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 35 remaining) [2022-11-22 01:09:09,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 35 remaining) [2022-11-22 01:09:09,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 35 remaining) [2022-11-22 01:09:09,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 35 remaining) [2022-11-22 01:09:09,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 35 remaining) [2022-11-22 01:09:09,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 35 remaining) [2022-11-22 01:09:09,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 35 remaining) [2022-11-22 01:09:09,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 35 remaining) [2022-11-22 01:09:09,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 35 remaining) [2022-11-22 01:09:09,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 35 remaining) [2022-11-22 01:09:09,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 35 remaining) [2022-11-22 01:09:09,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 35 remaining) [2022-11-22 01:09:09,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 35 remaining) [2022-11-22 01:09:09,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 35 remaining) [2022-11-22 01:09:09,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 35 remaining) [2022-11-22 01:09:09,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 35 remaining) [2022-11-22 01:09:09,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 35 remaining) [2022-11-22 01:09:09,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 35 remaining) [2022-11-22 01:09:09,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 35 remaining) [2022-11-22 01:09:09,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 35 remaining) [2022-11-22 01:09:09,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 35 remaining) [2022-11-22 01:09:09,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 35 remaining) [2022-11-22 01:09:09,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 35 remaining) [2022-11-22 01:09:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 35 remaining) [2022-11-22 01:09:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 35 remaining) [2022-11-22 01:09:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 35 remaining) [2022-11-22 01:09:09,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 35 remaining) [2022-11-22 01:09:09,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (0 of 35 remaining) [2022-11-22 01:09:09,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:09:09,911 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:09:09,913 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:09:09,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:09:09 BoogieIcfgContainer [2022-11-22 01:09:09,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:09:09,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:09:09,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:09:09,918 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:09:09,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:06" (3/4) ... [2022-11-22 01:09:09,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:09:09,934 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-22 01:09:09,935 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 01:09:09,935 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:09:09,935 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:09:09,982 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:09:09,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:09:09,983 INFO L158 Benchmark]: Toolchain (without parser) took 4513.41ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 121.3MB in the beginning and 53.0MB in the end (delta: 68.2MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,985 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:09:09,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.49ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 105.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.32ms. Allocated memory is still 153.1MB. Free memory was 105.2MB in the beginning and 103.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,986 INFO L158 Benchmark]: Boogie Preprocessor took 61.61ms. Allocated memory is still 153.1MB. Free memory was 103.1MB in the beginning and 101.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,986 INFO L158 Benchmark]: RCFGBuilder took 716.18ms. Allocated memory is still 153.1MB. Free memory was 101.7MB in the beginning and 110.4MB in the end (delta: -8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,987 INFO L158 Benchmark]: TraceAbstraction took 3145.29ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 110.1MB in the beginning and 56.2MB in the end (delta: 53.9MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,988 INFO L158 Benchmark]: Witness Printer took 65.49ms. Allocated memory is still 186.6MB. Free memory was 56.2MB in the beginning and 53.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:09:09,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.49ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 105.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.32ms. Allocated memory is still 153.1MB. Free memory was 105.2MB in the beginning and 103.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.61ms. Allocated memory is still 153.1MB. Free memory was 103.1MB in the beginning and 101.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.18ms. Allocated memory is still 153.1MB. Free memory was 101.7MB in the beginning and 110.4MB in the end (delta: -8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3145.29ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 110.1MB in the beginning and 56.2MB in the end (delta: 53.9MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. * Witness Printer took 65.49ms. Allocated memory is still 186.6MB. Free memory was 56.2MB in the beginning and 53.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 569]: 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, 59 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 167 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 265 IncrementalHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 142 mSDtfsCounter, 265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 31, 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 35 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 01:09:10,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d5cb27-0a6c-4022-9a5e-404ed27fb305/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 Result: TRUE