./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/java_LogBuiltIn-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/java_LogBuiltIn-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9 --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 c8ee3d6cfd19d89eb63acd84af9095ccede1106773f9e76a6ea9a3caed85cc30 --- 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-6b4ec56 [2022-11-20 21:20:06,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:20:06,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:20:07,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:20:07,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:20:07,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:20:07,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:20:07,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:20:07,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:20:07,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:20:07,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:20:07,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:20:07,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:20:07,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:20:07,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:20:07,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:20:07,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:20:07,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:20:07,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:20:07,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:20:07,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:20:07,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:20:07,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:20:07,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:20:07,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:20:07,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:20:07,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:20:07,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:20:07,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:20:07,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:20:07,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:20:07,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:20:07,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:20:07,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:20:07,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:20:07,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:20:07,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:20:07,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:20:07,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:20:07,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:20:07,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:20:07,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-20 21:20:07,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:20:07,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:20:07,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:20:07,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:20:07,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:20:07,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:20:07,130 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:20:07,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:20:07,130 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:20:07,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:20:07,131 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:20:07,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:20:07,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:20:07,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:20:07,132 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:20:07,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:20:07,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:20:07,133 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:20:07,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 21:20:07,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 21:20:07,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:20:07,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:20:07,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:20:07,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:20:07,135 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 21:20:07,136 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 21:20:07,136 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 21:20:07,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:20:07,136 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:20:07,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:20:07,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:20:07,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:20:07,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:20:07,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:20:07,138 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:20:07,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:20:07,138 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:20:07,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:20:07,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:20:07,139 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_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ee3d6cfd19d89eb63acd84af9095ccede1106773f9e76a6ea9a3caed85cc30 [2022-11-20 21:20:07,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:20:07,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:20:07,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:20:07,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:20:07,492 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:20:07,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/termination-memory-alloca/java_LogBuiltIn-alloca.i [2022-11-20 21:20:10,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:20:10,888 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:20:10,896 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/sv-benchmarks/c/termination-memory-alloca/java_LogBuiltIn-alloca.i [2022-11-20 21:20:10,906 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/data/e31ae6f38/45c03294cec34bdb81ee6e2392551dfe/FLAG20458972c [2022-11-20 21:20:10,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/data/e31ae6f38/45c03294cec34bdb81ee6e2392551dfe [2022-11-20 21:20:10,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:20:10,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:20:10,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:20:10,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:20:10,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:20:10,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:20:10" (1/1) ... [2022-11-20 21:20:10,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2631ea1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:10, skipping insertion in model container [2022-11-20 21:20:10,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:20:10" (1/1) ... [2022-11-20 21:20:10,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:20:10,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:20:11,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:20:11,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:20:11,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:20:11,369 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:20:11,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11 WrapperNode [2022-11-20 21:20:11,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:20:11,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:20:11,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:20:11,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:20:11,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,427 INFO L138 Inliner]: procedures = 111, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-11-20 21:20:11,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:20:11,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:20:11,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:20:11,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:20:11,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:20:11,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:20:11,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:20:11,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:20:11,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (1/1) ... [2022-11-20 21:20:11,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:20:11,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:20:11,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:20:11,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:20:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:20:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:20:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:20:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:20:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:20:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:20:11,709 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:20:11,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:20:11,953 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:20:11,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:20:11,984 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:20:11,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:11 BoogieIcfgContainer [2022-11-20 21:20:11,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:20:11,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:20:11,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:20:11,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:20:11,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:20:10" (1/3) ... [2022-11-20 21:20:11,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a3c74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:20:11, skipping insertion in model container [2022-11-20 21:20:11,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:11" (2/3) ... [2022-11-20 21:20:11,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a3c74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:20:11, skipping insertion in model container [2022-11-20 21:20:11,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:11" (3/3) ... [2022-11-20 21:20:11,995 INFO L112 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn-alloca.i [2022-11-20 21:20:12,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:20:12,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-20 21:20:12,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:20:12,067 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;@62238b82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:20:12,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 21:20:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 11 states have (on average 2.727272727272727) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-11-20 21:20:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 21:20:12,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:12,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 21:20:12,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-20 21:20:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2577, now seen corresponding path program 1 times [2022-11-20 21:20:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:12,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991921145] [2022-11-20 21:20:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:12,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:12,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:12,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991921145] [2022-11-20 21:20:12,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991921145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:12,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:12,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:20:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879711038] [2022-11-20 21:20:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:12,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:12,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:12,452 INFO L87 Difference]: Start difference. First operand has 29 states, 11 states have (on average 2.727272727272727) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-11-20 21:20:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:12,506 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-20 21:20:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:12,509 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 [2022-11-20 21:20:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:12,517 INFO L225 Difference]: With dead ends: 25 [2022-11-20 21:20:12,517 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 21:20:12,519 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 [2022-11-20 21:20:12,522 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:12,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:20:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 21:20:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 21:20:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:20:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-20 21:20:12,556 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 2 [2022-11-20 21:20:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:12,556 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-20 21:20:12,557 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) [2022-11-20 21:20:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-20 21:20:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 21:20:12,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:12,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 21:20:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:20:12,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-20 21:20:12,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2578, now seen corresponding path program 1 times [2022-11-20 21:20:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:12,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419322728] [2022-11-20 21:20:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:12,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:12,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:12,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419322728] [2022-11-20 21:20:12,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419322728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:12,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:12,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:20:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89671883] [2022-11-20 21:20:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:12,724 INFO L87 Difference]: Start difference. First operand 24 states and 24 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) [2022-11-20 21:20:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:12,771 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-11-20 21:20:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:12,772 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 [2022-11-20 21:20:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:12,773 INFO L225 Difference]: With dead ends: 20 [2022-11-20 21:20:12,774 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 21:20:12,774 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 [2022-11-20 21:20:12,776 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:12,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 7 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:20:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 21:20:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 21:20:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-11-20 21:20:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-11-20 21:20:12,790 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 2 [2022-11-20 21:20:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:12,792 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-11-20 21:20:12,792 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) [2022-11-20 21:20:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-11-20 21:20:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 21:20:12,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:12,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 21:20:12,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:20:12,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-20 21:20:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash 79863, now seen corresponding path program 1 times [2022-11-20 21:20:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490109901] [2022-11-20 21:20:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:12,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:12,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490109901] [2022-11-20 21:20:12,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490109901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:12,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:12,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:20:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281017838] [2022-11-20 21:20:12,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:12,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:12,891 INFO L87 Difference]: Start difference. First operand 20 states and 20 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) [2022-11-20 21:20:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:12,926 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 21:20:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:12,927 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 [2022-11-20 21:20:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:12,928 INFO L225 Difference]: With dead ends: 16 [2022-11-20 21:20:12,928 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 21:20:12,928 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 [2022-11-20 21:20:12,932 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:12,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:20:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 21:20:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-20 21:20:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:20:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-20 21:20:12,936 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2022-11-20 21:20:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:12,937 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-20 21:20:12,937 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) [2022-11-20 21:20:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-20 21:20:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 21:20:12,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:12,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 21:20:12,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:20:12,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-20 21:20:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash 79864, now seen corresponding path program 1 times [2022-11-20 21:20:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:12,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404200742] [2022-11-20 21:20:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:13,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:13,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404200742] [2022-11-20 21:20:13,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404200742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:13,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:13,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:20:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556734928] [2022-11-20 21:20:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:13,079 INFO L87 Difference]: Start difference. First operand 16 states and 16 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) [2022-11-20 21:20:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:13,105 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-20 21:20:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:13,108 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 [2022-11-20 21:20:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:13,109 INFO L225 Difference]: With dead ends: 12 [2022-11-20 21:20:13,109 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 21:20:13,109 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 [2022-11-20 21:20:13,110 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:13,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:20:13,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 21:20:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 21:20:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-20 21:20:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 21:20:13,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2022-11-20 21:20:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:13,114 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 21:20:13,114 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) [2022-11-20 21:20:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 21:20:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:20:13,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:13,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:20:13,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-20 21:20:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 740196340, now seen corresponding path program 1 times [2022-11-20 21:20:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157819176] [2022-11-20 21:20:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:13,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:13,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157819176] [2022-11-20 21:20:13,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157819176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:13,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:13,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:20:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902408041] [2022-11-20 21:20:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:13,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:20:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:20:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:20:13,413 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:20:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:13,454 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-11-20 21:20:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:20:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 21:20:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:13,456 INFO L225 Difference]: With dead ends: 11 [2022-11-20 21:20:13,456 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:20:13,456 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 [2022-11-20 21:20:13,457 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:13,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:20:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:20:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:20:13,467 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) [2022-11-20 21:20:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:20:13,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-20 21:20:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:13,468 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:20:13,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:20:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:20:13,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:20:13,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-11-20 21:20:13,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-11-20 21:20:13,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-11-20 21:20:13,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-11-20 21:20:13,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-11-20 21:20:13,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-11-20 21:20:13,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-11-20 21:20:13,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-11-20 21:20:13,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-11-20 21:20:13,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-11-20 21:20:13,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-11-20 21:20:13,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-11-20 21:20:13,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2022-11-20 21:20:13,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2022-11-20 21:20:13,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2022-11-20 21:20:13,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2022-11-20 21:20:13,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2022-11-20 21:20:13,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:20:13,486 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 21:20:13,489 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:20:13,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:20:13 BoogieIcfgContainer [2022-11-20 21:20:13,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:20:13,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:20:13,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:20:13,497 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:20:13,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:11" (3/4) ... [2022-11-20 21:20:13,501 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:20:13,514 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-20 21:20:13,514 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 21:20:13,515 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:20:13,515 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:20:13,558 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:20:13,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:20:13,559 INFO L158 Benchmark]: Toolchain (without parser) took 2633.70ms. Allocated memory is still 155.2MB. Free memory was 118.3MB in the beginning and 95.4MB in the end (delta: 22.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-11-20 21:20:13,559 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:20:13,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.81ms. Allocated memory is still 155.2MB. Free memory was 117.8MB in the beginning and 117.1MB in the end (delta: 689.5kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 21:20:13,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.37ms. Allocated memory is still 155.2MB. Free memory was 117.1MB in the beginning and 115.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:20:13,560 INFO L158 Benchmark]: Boogie Preprocessor took 54.95ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 113.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:20:13,561 INFO L158 Benchmark]: RCFGBuilder took 502.66ms. Allocated memory is still 155.2MB. Free memory was 113.9MB in the beginning and 99.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 21:20:13,561 INFO L158 Benchmark]: TraceAbstraction took 1506.47ms. Allocated memory is still 155.2MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-20 21:20:13,561 INFO L158 Benchmark]: Witness Printer took 61.47ms. Allocated memory is still 155.2MB. Free memory was 97.5MB in the beginning and 95.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:20:13,564 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 125.8MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.81ms. Allocated memory is still 155.2MB. Free memory was 117.8MB in the beginning and 117.1MB in the end (delta: 689.5kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.37ms. Allocated memory is still 155.2MB. Free memory was 117.1MB in the beginning and 115.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.95ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 113.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 502.66ms. Allocated memory is still 155.2MB. Free memory was 113.9MB in the beginning and 99.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1506.47ms. Allocated memory is still 155.2MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Witness Printer took 61.47ms. Allocated memory is still 155.2MB. Free memory was 97.5MB in the beginning and 95.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 559]: 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, 29 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 22 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 115 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 21:20:13,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7bb8bc4-a625-4759-836c-78f5f76e2729/bin/utaipan-6cKwYrpEi9/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