./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0d4825ef04f5689aff4ed3e5df593fedd83b7eb3ae072cea52c48718c9baf42 --- 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-2329fc7 [2022-12-13 13:25:15,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:25:15,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:25:15,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:25:15,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:25:15,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:25:15,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:25:15,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:25:15,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:25:15,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:25:15,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:25:15,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:25:15,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:25:15,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:25:15,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:25:15,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:25:15,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:25:15,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:25:15,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:25:15,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:25:15,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:25:15,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:25:15,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:25:15,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:25:15,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:25:15,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:25:15,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:25:15,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:25:15,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:25:15,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:25:15,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:25:15,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:25:15,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:25:15,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:25:15,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:25:15,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:25:15,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:25:15,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:25:15,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:25:15,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:25:15,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:25:15,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 13:25:15,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:25:15,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:25:15,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:25:15,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:25:15,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:25:15,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:25:15,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:25:15,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:25:15,424 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:25:15,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:25:15,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:25:15,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:25:15,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:25:15,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:25:15,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:25:15,425 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:25:15,425 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:25:15,425 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:25:15,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:25:15,425 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:25:15,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:25:15,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:25:15,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:25:15,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:25:15,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:25:15,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:25:15,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:25:15,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:25:15,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:25:15,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:25:15,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:25:15,427 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:25:15,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:25:15,428 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:25:15,428 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d4825ef04f5689aff4ed3e5df593fedd83b7eb3ae072cea52c48718c9baf42 [2022-12-13 13:25:15,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:25:15,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:25:15,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:25:15,629 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:25:15,629 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:25:15,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-properties/simple-2.i [2022-12-13 13:25:18,239 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:25:18,437 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:25:18,437 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/sv-benchmarks/c/list-properties/simple-2.i [2022-12-13 13:25:18,451 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data/5d3020f5f/15be7cc47fb247a5ba5a76d27d6be12d/FLAG529228136 [2022-12-13 13:25:18,463 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data/5d3020f5f/15be7cc47fb247a5ba5a76d27d6be12d [2022-12-13 13:25:18,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:25:18,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:25:18,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:25:18,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:25:18,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:25:18,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2494f764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18, skipping insertion in model container [2022-12-13 13:25:18,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:25:18,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:25:18,675 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2022-12-13 13:25:18,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:25:18,686 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:25:18,731 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2022-12-13 13:25:18,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:25:18,749 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:25:18,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18 WrapperNode [2022-12-13 13:25:18,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:25:18,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:25:18,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:25:18,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:25:18,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,776 INFO L138 Inliner]: procedures = 124, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-12-13 13:25:18,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:25:18,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:25:18,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:25:18,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:25:18,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:25:18,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:25:18,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:25:18,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:25:18,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (1/1) ... [2022-12-13 13:25:18,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:25:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:25:18,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:25:18,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:25:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-12-13 13:25:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-12-13 13:25:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:25:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:25:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:25:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:25:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:25:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:25:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:25:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:25:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:25:18,925 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:25:18,927 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:25:18,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-12-13 13:25:19,078 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:25:19,082 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:25:19,083 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:25:19,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:25:19 BoogieIcfgContainer [2022-12-13 13:25:19,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:25:19,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:25:19,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:25:19,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:25:19,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:25:18" (1/3) ... [2022-12-13 13:25:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6579da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:25:19, skipping insertion in model container [2022-12-13 13:25:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:18" (2/3) ... [2022-12-13 13:25:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6579da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:25:19, skipping insertion in model container [2022-12-13 13:25:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:25:19" (3/3) ... [2022-12-13 13:25:19,090 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-2.i [2022-12-13 13:25:19,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:25:19,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 13:25:19,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:25:19,138 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=PETRI_NET, 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;@51b88f7a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:25:19,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-13 13:25:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 13:25:19,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:19,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:25:19,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517224, now seen corresponding path program 1 times [2022-12-13 13:25:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:19,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970539496] [2022-12-13 13:25:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:19,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:19,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970539496] [2022-12-13 13:25:19,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970539496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:19,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:19,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:25:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180264488] [2022-12-13 13:25:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:19,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:25:19,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:25:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:25:19,295 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-13 13:25:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:19,307 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-12-13 13:25:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:25:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-12-13 13:25:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:19,313 INFO L225 Difference]: With dead ends: 45 [2022-12-13 13:25:19,314 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 13:25:19,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:25:19,317 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:19,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:25:19,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 13:25:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-13 13:25:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 38 states have internal predecessors, (40), 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) [2022-12-13 13:25:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-12-13 13:25:19,340 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 6 [2022-12-13 13:25:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:19,340 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-12-13 13:25:19,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-13 13:25:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-12-13 13:25:19,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 13:25:19,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:19,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:19,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:25:19,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:19,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238120, now seen corresponding path program 1 times [2022-12-13 13:25:19,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:19,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658500428] [2022-12-13 13:25:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:19,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:19,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:19,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658500428] [2022-12-13 13:25:19,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658500428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:19,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:19,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:25:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893587020] [2022-12-13 13:25:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:19,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:25:19,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:19,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:25:19,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:25:19,420 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-12-13 13:25:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:19,492 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-12-13 13:25:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:25:19,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2022-12-13 13:25:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:19,493 INFO L225 Difference]: With dead ends: 47 [2022-12-13 13:25:19,494 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 13:25:19,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:19,495 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:19,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 16 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 13:25:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2022-12-13 13:25:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 40 states have internal predecessors, (47), 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) [2022-12-13 13:25:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-12-13 13:25:19,499 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2022-12-13 13:25:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:19,499 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-12-13 13:25:19,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-12-13 13:25:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-12-13 13:25:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 13:25:19,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:19,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:19,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:25:19,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238121, now seen corresponding path program 1 times [2022-12-13 13:25:19,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:19,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871754648] [2022-12-13 13:25:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:19,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:19,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:19,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871754648] [2022-12-13 13:25:19,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871754648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:19,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:19,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:25:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003881645] [2022-12-13 13:25:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:19,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:25:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:25:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:25:19,592 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-12-13 13:25:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:19,658 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2022-12-13 13:25:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:25:19,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2022-12-13 13:25:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:19,659 INFO L225 Difference]: With dead ends: 56 [2022-12-13 13:25:19,659 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 13:25:19,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:19,660 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:19,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 25 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 13:25:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2022-12-13 13:25:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 47 states have internal predecessors, (52), 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) [2022-12-13 13:25:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-12-13 13:25:19,664 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 7 [2022-12-13 13:25:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:19,664 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-12-13 13:25:19,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-12-13 13:25:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-12-13 13:25:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:25:19,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:19,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:25:19,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:19,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1884133396, now seen corresponding path program 1 times [2022-12-13 13:25:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:19,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336018799] [2022-12-13 13:25:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:19,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:19,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336018799] [2022-12-13 13:25:19,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336018799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:19,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:19,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:25:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303783497] [2022-12-13 13:25:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:19,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:25:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:25:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:25:19,714 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-12-13 13:25:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:19,757 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-12-13 13:25:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:25:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Word has length 12 [2022-12-13 13:25:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:19,758 INFO L225 Difference]: With dead ends: 53 [2022-12-13 13:25:19,758 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 13:25:19,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:19,759 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:19,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 37 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:25:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 13:25:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2022-12-13 13:25:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.4166666666666667) 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) [2022-12-13 13:25:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-12-13 13:25:19,763 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 12 [2022-12-13 13:25:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-12-13 13:25:19,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-12-13 13:25:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-12-13 13:25:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 13:25:19,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:19,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:25:19,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1721365971, now seen corresponding path program 1 times [2022-12-13 13:25:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:19,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002493202] [2022-12-13 13:25:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:19,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:19,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:19,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002493202] [2022-12-13 13:25:19,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002493202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:19,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:19,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:25:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49334336] [2022-12-13 13:25:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:19,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:25:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:25:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:25:19,959 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-12-13 13:25:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:20,064 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2022-12-13 13:25:20,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:25:20,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2022-12-13 13:25:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:20,065 INFO L225 Difference]: With dead ends: 85 [2022-12-13 13:25:20,065 INFO L226 Difference]: Without dead ends: 85 [2022-12-13 13:25:20,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:25:20,067 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:20,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 99 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-13 13:25:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2022-12-13 13:25:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.375) internal successors, (55), 51 states have internal predecessors, (55), 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) [2022-12-13 13:25:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2022-12-13 13:25:20,074 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 13 [2022-12-13 13:25:20,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:20,074 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2022-12-13 13:25:20,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-12-13 13:25:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2022-12-13 13:25:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 13:25:20,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:20,075 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:20,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:25:20,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 761251611, now seen corresponding path program 1 times [2022-12-13 13:25:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:20,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937208049] [2022-12-13 13:25:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:20,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937208049] [2022-12-13 13:25:20,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937208049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:20,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:20,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:25:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508795129] [2022-12-13 13:25:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:20,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:25:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:25:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:25:20,188 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:20,307 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2022-12-13 13:25:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:25:20,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 13:25:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:20,308 INFO L225 Difference]: With dead ends: 64 [2022-12-13 13:25:20,308 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 13:25:20,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:25:20,309 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:20,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 93 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 13:25:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2022-12-13 13:25:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.325) internal successors, (53), 49 states have internal predecessors, (53), 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) [2022-12-13 13:25:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-12-13 13:25:20,314 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 15 [2022-12-13 13:25:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:20,314 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-12-13 13:25:20,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-12-13 13:25:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 13:25:20,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:20,315 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:25:20,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 761251612, now seen corresponding path program 1 times [2022-12-13 13:25:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:20,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780975401] [2022-12-13 13:25:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:20,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780975401] [2022-12-13 13:25:20,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780975401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:20,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:20,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:25:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446375197] [2022-12-13 13:25:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:20,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:25:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:25:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:25:20,483 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:20,612 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-12-13 13:25:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:25:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 13:25:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:20,613 INFO L225 Difference]: With dead ends: 60 [2022-12-13 13:25:20,614 INFO L226 Difference]: Without dead ends: 60 [2022-12-13 13:25:20,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:25:20,615 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:20,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 111 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-13 13:25:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2022-12-13 13:25:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 39 states have internal predecessors, (43), 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) [2022-12-13 13:25:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-12-13 13:25:20,619 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2022-12-13 13:25:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:20,619 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-12-13 13:25:20,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-12-13 13:25:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 13:25:20,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:20,620 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:20,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:25:20,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 700715683, now seen corresponding path program 1 times [2022-12-13 13:25:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325886013] [2022-12-13 13:25:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:20,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325886013] [2022-12-13 13:25:20,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325886013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:25:20,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806655976] [2022-12-13 13:25:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:20,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:25:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:25:20,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:25:20,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:25:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:20,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 13:25:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:20,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:25:20,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:25:21,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 13:25:21,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 13:25:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:21,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:25:21,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-12-13 13:25:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:21,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:21,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806655976] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:25:21,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:25:21,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2022-12-13 13:25:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230249776] [2022-12-13 13:25:21,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:25:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 13:25:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 13:25:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:25:21,374 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 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) [2022-12-13 13:25:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:21,542 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2022-12-13 13:25:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:25:21,542 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 13:25:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:21,543 INFO L225 Difference]: With dead ends: 55 [2022-12-13 13:25:21,543 INFO L226 Difference]: Without dead ends: 55 [2022-12-13 13:25:21,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-12-13 13:25:21,544 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 129 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:21,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 127 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-13 13:25:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2022-12-13 13:25:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.2105263157894737) 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) [2022-12-13 13:25:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-12-13 13:25:21,548 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 16 [2022-12-13 13:25:21,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:21,549 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-12-13 13:25:21,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 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) [2022-12-13 13:25:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-12-13 13:25:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 13:25:21,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:21,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:21,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:25:21,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 13:25:21,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:21,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash 247348413, now seen corresponding path program 1 times [2022-12-13 13:25:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:21,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947708319] [2022-12-13 13:25:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:25:21,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:25:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:25:21,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:25:21,865 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:25:21,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2022-12-13 13:25:21,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-12-13 13:25:21,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-12-13 13:25:21,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-12-13 13:25:21,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-12-13 13:25:21,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-12-13 13:25:21,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-12-13 13:25:21,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-12-13 13:25:21,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-12-13 13:25:21,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-12-13 13:25:21,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-12-13 13:25:21,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-12-13 13:25:21,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2022-12-13 13:25:21,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 16 remaining) [2022-12-13 13:25:21,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2022-12-13 13:25:21,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 16 remaining) [2022-12-13 13:25:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:25:21,886 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:21,892 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:25:21,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:25:21 BoogieIcfgContainer [2022-12-13 13:25:21,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:25:21,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:25:21,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:25:21,919 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:25:21,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:25:19" (3/4) ... [2022-12-13 13:25:21,922 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:25:21,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:25:21,922 INFO L158 Benchmark]: Toolchain (without parser) took 3456.67ms. Allocated memory was 192.9MB in the beginning and 234.9MB in the end (delta: 41.9MB). Free memory was 132.8MB in the beginning and 135.9MB in the end (delta: -3.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2022-12-13 13:25:21,922 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:25:21,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.15ms. Allocated memory is still 192.9MB. Free memory was 132.6MB in the beginning and 164.3MB in the end (delta: -31.6MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2022-12-13 13:25:21,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.20ms. Allocated memory is still 192.9MB. Free memory was 164.3MB in the beginning and 162.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:25:21,923 INFO L158 Benchmark]: Boogie Preprocessor took 18.14ms. Allocated memory is still 192.9MB. Free memory was 162.2MB in the beginning and 160.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:25:21,923 INFO L158 Benchmark]: RCFGBuilder took 288.92ms. Allocated memory is still 192.9MB. Free memory was 160.9MB in the beginning and 146.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:25:21,923 INFO L158 Benchmark]: TraceAbstraction took 2832.26ms. Allocated memory was 192.9MB in the beginning and 234.9MB in the end (delta: 41.9MB). Free memory was 145.4MB in the beginning and 135.9MB in the end (delta: 9.5MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2022-12-13 13:25:21,924 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 234.9MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:25:21,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.15ms. Allocated memory is still 192.9MB. Free memory was 132.6MB in the beginning and 164.3MB in the end (delta: -31.6MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.20ms. Allocated memory is still 192.9MB. Free memory was 164.3MB in the beginning and 162.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.14ms. Allocated memory is still 192.9MB. Free memory was 162.2MB in the beginning and 160.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.92ms. Allocated memory is still 192.9MB. Free memory was 160.9MB in the beginning and 146.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2832.26ms. Allocated memory was 192.9MB in the beginning and 234.9MB in the end (delta: 41.9MB). Free memory was 145.4MB in the beginning and 135.9MB in the end (delta: 9.5MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 234.9MB. Free memory is still 135.9MB. There was no memory consumed. 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={-1:0}, p={-1:0}] [L544] p->n = 0 VAL [a={-1:0}, p={-1:0}] [L545] p = a VAL [a={-1:0}, p={-1:0}] [L546] COND TRUE p!=0 VAL [a={-1:0}, p={-1:0}] [L547] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={-1:0}, p={-1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={-1:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={-1:0}, p={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 475 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 475 mSDsluCounter, 556 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 340 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 590 IncrementalHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 216 mSDtfsCounter, 590 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=5, InterpolantAutomatonStates: 46, 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, 8 MinimizatonAttempts, 98 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 1 QuantifiedInterpolants, 879 SizeOfPredicates, 10 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 7/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:25:21,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0d4825ef04f5689aff4ed3e5df593fedd83b7eb3ae072cea52c48718c9baf42 --- 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-2329fc7 [2022-12-13 13:25:23,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:25:23,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:25:23,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:25:23,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:25:23,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:25:23,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:25:23,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:25:23,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:25:23,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:25:23,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:25:23,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:25:23,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:25:23,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:25:23,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:25:23,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:25:23,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:25:23,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:25:23,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:25:23,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:25:23,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:25:23,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:25:23,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:25:23,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:25:23,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:25:23,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:25:23,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:25:23,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:25:23,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:25:23,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:25:23,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:25:23,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:25:23,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:25:23,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:25:23,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:25:23,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:25:23,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:25:23,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:25:23,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:25:23,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:25:23,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:25:23,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 13:25:23,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:25:23,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:25:23,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:25:23,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:25:23,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:25:23,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:25:23,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:25:23,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:25:23,750 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:25:23,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:25:23,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:25:23,751 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:25:23,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:25:23,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:25:23,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:25:23,751 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:25:23,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:25:23,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:25:23,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:25:23,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:25:23,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:25:23,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:25:23,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:25:23,754 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:25:23,755 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:25:23,755 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d4825ef04f5689aff4ed3e5df593fedd83b7eb3ae072cea52c48718c9baf42 [2022-12-13 13:25:23,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:25:24,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:25:24,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:25:24,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:25:24,012 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:25:24,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-properties/simple-2.i [2022-12-13 13:25:26,584 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:25:26,730 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:25:26,731 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/sv-benchmarks/c/list-properties/simple-2.i [2022-12-13 13:25:26,740 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data/cfa21da20/313a64a89023402ab0a70e44472a00bc/FLAGfee5676e0 [2022-12-13 13:25:26,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/data/cfa21da20/313a64a89023402ab0a70e44472a00bc [2022-12-13 13:25:26,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:25:26,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:25:26,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:25:26,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:25:26,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:25:26,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:25:26" (1/1) ... [2022-12-13 13:25:26,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3648e640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:26, skipping insertion in model container [2022-12-13 13:25:26,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:25:26" (1/1) ... [2022-12-13 13:25:26,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:25:26,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:25:26,968 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2022-12-13 13:25:26,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:25:26,982 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:25:27,004 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2022-12-13 13:25:27,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:25:27,023 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:25:27,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27 WrapperNode [2022-12-13 13:25:27,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:25:27,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:25:27,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:25:27,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:25:27,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,053 INFO L138 Inliner]: procedures = 127, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-12-13 13:25:27,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:25:27,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:25:27,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:25:27,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:25:27,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:25:27,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:25:27,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:25:27,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:25:27,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (1/1) ... [2022-12-13 13:25:27,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:25:27,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:25:27,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:25:27,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:25:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-12-13 13:25:27,136 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-12-13 13:25:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 13:25:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:25:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:25:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:25:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:25:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 13:25:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:25:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:25:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:25:27,237 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:25:27,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:25:27,262 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-12-13 13:25:27,451 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:25:27,457 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:25:27,457 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:25:27,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:25:27 BoogieIcfgContainer [2022-12-13 13:25:27,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:25:27,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:25:27,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:25:27,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:25:27,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:25:26" (1/3) ... [2022-12-13 13:25:27,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b52c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:25:27, skipping insertion in model container [2022-12-13 13:25:27,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:25:27" (2/3) ... [2022-12-13 13:25:27,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b52c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:25:27, skipping insertion in model container [2022-12-13 13:25:27,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:25:27" (3/3) ... [2022-12-13 13:25:27,468 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-2.i [2022-12-13 13:25:27,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:25:27,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 13:25:27,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:25:27,545 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=PETRI_NET, 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;@5d9b1ef5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:25:27,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-13 13:25:27,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.92) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 13:25:27,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:27,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:25:27,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516511, now seen corresponding path program 1 times [2022-12-13 13:25:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:27,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095272779] [2022-12-13 13:25:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:27,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:27,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:27,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:27,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:25:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:27,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:25:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:27,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:25:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:27,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:25:27,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:27,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095272779] [2022-12-13 13:25:27,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095272779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:27,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:27,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:25:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878264871] [2022-12-13 13:25:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:27,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:25:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:25:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:25:27,810 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.92) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-12-13 13:25:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:28,043 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-12-13 13:25:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:25:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-12-13 13:25:28,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:28,052 INFO L225 Difference]: With dead ends: 74 [2022-12-13 13:25:28,052 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 13:25:28,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:28,058 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 95 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:28,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 34 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:25:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 13:25:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2022-12-13 13:25:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 49 states have internal predecessors, (61), 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) [2022-12-13 13:25:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2022-12-13 13:25:28,090 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 6 [2022-12-13 13:25:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:28,090 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2022-12-13 13:25:28,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-12-13 13:25:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2022-12-13 13:25:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 13:25:28,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:28,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:25:28,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:25:28,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:28,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:28,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516510, now seen corresponding path program 1 times [2022-12-13 13:25:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:28,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806097592] [2022-12-13 13:25:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:28,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:28,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:28,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:28,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 13:25:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:28,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:25:28,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:28,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 13:25:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:28,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:25:28,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:28,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806097592] [2022-12-13 13:25:28,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806097592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:28,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:28,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:25:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703407073] [2022-12-13 13:25:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:28,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:25:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:25:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:25:28,486 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-12-13 13:25:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:28,608 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-12-13 13:25:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:25:28,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-12-13 13:25:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:28,610 INFO L225 Difference]: With dead ends: 49 [2022-12-13 13:25:28,610 INFO L226 Difference]: Without dead ends: 49 [2022-12-13 13:25:28,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:28,611 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:28,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 17 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-13 13:25:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-12-13 13:25:28,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 45 states have internal predecessors, (50), 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) [2022-12-13 13:25:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-12-13 13:25:28,616 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 6 [2022-12-13 13:25:28,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:28,617 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-12-13 13:25:28,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-12-13 13:25:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-12-13 13:25:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:25:28,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:28,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:28,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 13:25:28,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:28,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 417959389, now seen corresponding path program 1 times [2022-12-13 13:25:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663821632] [2022-12-13 13:25:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:28,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:28,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:28,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:28,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 13:25:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:28,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:25:28,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:28,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:25:28,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:28,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663821632] [2022-12-13 13:25:28,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663821632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:28,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:28,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:25:28,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272679659] [2022-12-13 13:25:28,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:28,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:25:28,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:25:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:25:28,980 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-12-13 13:25:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:29,085 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2022-12-13 13:25:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:25:29,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2022-12-13 13:25:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:29,086 INFO L225 Difference]: With dead ends: 51 [2022-12-13 13:25:29,086 INFO L226 Difference]: Without dead ends: 51 [2022-12-13 13:25:29,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:29,088 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:29,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:25:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-13 13:25:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-12-13 13:25:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 45 states have internal predecessors, (49), 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) [2022-12-13 13:25:29,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-12-13 13:25:29,092 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 11 [2022-12-13 13:25:29,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:29,093 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-12-13 13:25:29,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-12-13 13:25:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-12-13 13:25:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:25:29,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:29,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:29,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 13:25:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:29,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 71880067, now seen corresponding path program 1 times [2022-12-13 13:25:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:29,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353617545] [2022-12-13 13:25:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:29,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:29,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 13:25:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:29,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:25:29,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:29,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:25:29,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:25:29,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 13:25:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:29,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:25:29,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:29,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353617545] [2022-12-13 13:25:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353617545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:25:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10460317] [2022-12-13 13:25:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:29,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:25:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:25:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:25:29,537 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-12-13 13:25:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:29,758 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2022-12-13 13:25:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:25:29,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) Word has length 12 [2022-12-13 13:25:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:29,760 INFO L225 Difference]: With dead ends: 82 [2022-12-13 13:25:29,760 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 13:25:29,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:25:29,761 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:29,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 91 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:25:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 13:25:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2022-12-13 13:25:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.394736842105263) internal successors, (53), 49 states have internal predecessors, (53), 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) [2022-12-13 13:25:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-12-13 13:25:29,765 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 12 [2022-12-13 13:25:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:29,765 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-12-13 13:25:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-12-13 13:25:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-12-13 13:25:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 13:25:29,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:29,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:29,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 13:25:29,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:29,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769707, now seen corresponding path program 1 times [2022-12-13 13:25:29,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:29,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669368962] [2022-12-13 13:25:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:29,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:29,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:29,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:29,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 13:25:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:30,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 13:25:30,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:30,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:25:30,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:25:30,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:25:30,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 13:25:30,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 13:25:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:30,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:25:30,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:30,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669368962] [2022-12-13 13:25:30,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669368962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:30,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:30,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:25:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284927104] [2022-12-13 13:25:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:30,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:25:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:25:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:25:30,249 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-12-13 13:25:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:30,601 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-12-13 13:25:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:25:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2022-12-13 13:25:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:30,602 INFO L225 Difference]: With dead ends: 60 [2022-12-13 13:25:30,602 INFO L226 Difference]: Without dead ends: 60 [2022-12-13 13:25:30,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:25:30,603 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:30,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 103 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:25:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-13 13:25:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2022-12-13 13:25:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 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) [2022-12-13 13:25:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-12-13 13:25:30,606 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2022-12-13 13:25:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:30,606 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-12-13 13:25:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-12-13 13:25:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-12-13 13:25:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 13:25:30,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:30,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:30,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 13:25:30,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:30,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769708, now seen corresponding path program 1 times [2022-12-13 13:25:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:30,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640717254] [2022-12-13 13:25:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:30,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:30,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:30,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:30,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 13:25:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:30,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:25:30,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:30,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 13:25:30,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:25:30,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-13 13:25:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:30,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:25:30,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640717254] [2022-12-13 13:25:30,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640717254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:30,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:30,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:25:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393539960] [2022-12-13 13:25:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:25:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:25:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:25:30,965 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-12-13 13:25:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:31,163 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-12-13 13:25:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:25:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2022-12-13 13:25:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:31,164 INFO L225 Difference]: With dead ends: 54 [2022-12-13 13:25:31,164 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 13:25:31,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:25:31,165 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:31,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 85 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:25:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 13:25:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2022-12-13 13:25:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2424242424242424) 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) [2022-12-13 13:25:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-12-13 13:25:31,168 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 13 [2022-12-13 13:25:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:31,168 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-12-13 13:25:31,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-12-13 13:25:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-12-13 13:25:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 13:25:31,169 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:31,169 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:31,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 13:25:31,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:31,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:31,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1804762195, now seen corresponding path program 1 times [2022-12-13 13:25:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:31,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138052424] [2022-12-13 13:25:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:31,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:31,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:31,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 13:25:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:31,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 13:25:31,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:31,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:25:31,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:25:31,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 13:25:31,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 13:25:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:31,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:25:31,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-12-13 13:25:31,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:31,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:25:31,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:25:31,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138052424] [2022-12-13 13:25:31,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138052424] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:25:31,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:25:31,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-12-13 13:25:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809493214] [2022-12-13 13:25:31,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:25:31,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:25:31,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:25:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:25:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:25:31,690 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:35,045 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2022-12-13 13:25:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:25:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 13:25:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:35,046 INFO L225 Difference]: With dead ends: 53 [2022-12-13 13:25:35,046 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 13:25:35,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:25:35,047 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:35,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 79 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:25:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 13:25:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2022-12-13 13:25:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 40 states have internal predecessors, (44), 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) [2022-12-13 13:25:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-12-13 13:25:35,049 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 15 [2022-12-13 13:25:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:35,049 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-12-13 13:25:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:35,050 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-12-13 13:25:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 13:25:35,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:35,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:35,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 13:25:35,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:35,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-12-13 13:25:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash -113054509, now seen corresponding path program 1 times [2022-12-13 13:25:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:25:35,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268005151] [2022-12-13 13:25:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:35,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:35,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:25:35,257 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:25:35,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 13:25:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:25:35,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:25:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:25:35,419 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 13:25:35,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:25:35,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2022-12-13 13:25:35,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-12-13 13:25:35,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-12-13 13:25:35,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-12-13 13:25:35,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-12-13 13:25:35,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-12-13 13:25:35,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2022-12-13 13:25:35,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 16 remaining) [2022-12-13 13:25:35,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2022-12-13 13:25:35,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 16 remaining) [2022-12-13 13:25:35,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-12-13 13:25:35,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:25:35,628 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:35,630 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:25:35,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:25:35 BoogieIcfgContainer [2022-12-13 13:25:35,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:25:35,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:25:35,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:25:35,644 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:25:35,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:25:27" (3/4) ... [2022-12-13 13:25:35,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:25:35,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:25:35,646 INFO L158 Benchmark]: Toolchain (without parser) took 8892.61ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 32.3MB in the beginning and 52.8MB in the end (delta: -20.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-12-13 13:25:35,647 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 25.1MB in the beginning and 25.0MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:25:35,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.76ms. Allocated memory is still 60.8MB. Free memory was 32.0MB in the beginning and 30.2MB in the end (delta: 1.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-12-13 13:25:35,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.99ms. Allocated memory is still 60.8MB. Free memory was 30.0MB in the beginning and 28.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:25:35,647 INFO L158 Benchmark]: Boogie Preprocessor took 20.07ms. Allocated memory is still 60.8MB. Free memory was 28.2MB in the beginning and 26.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:25:35,647 INFO L158 Benchmark]: RCFGBuilder took 385.75ms. Allocated memory is still 60.8MB. Free memory was 26.5MB in the beginning and 26.6MB in the end (delta: -53.0kB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-12-13 13:25:35,647 INFO L158 Benchmark]: TraceAbstraction took 8181.12ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 26.0MB in the beginning and 53.6MB in the end (delta: -27.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:25:35,648 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 88.1MB. Free memory was 53.5MB in the beginning and 52.8MB in the end (delta: 686.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:25:35,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 25.1MB in the beginning and 25.0MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.76ms. Allocated memory is still 60.8MB. Free memory was 32.0MB in the beginning and 30.2MB in the end (delta: 1.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.99ms. Allocated memory is still 60.8MB. Free memory was 30.0MB in the beginning and 28.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.07ms. Allocated memory is still 60.8MB. Free memory was 28.2MB in the beginning and 26.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.75ms. Allocated memory is still 60.8MB. Free memory was 26.5MB in the beginning and 26.6MB in the end (delta: -53.0kB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8181.12ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 26.0MB in the beginning and 53.6MB in the end (delta: -27.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 88.1MB. Free memory was 53.5MB in the beginning and 52.8MB in the end (delta: 686.0kB). 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={6:0}] [L534] List t; [L535] List p = a; VAL [a={6:0}, p={6:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={6:0}, p={6:0}] [L544] p->n = 0 VAL [a={6:0}, p={6:0}] [L545] p = a VAL [a={6:0}, p={6:0}] [L546] COND TRUE p!=0 VAL [a={6:0}, p={6:0}] [L547] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={6:0}, p={6:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={6:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={6:0}, p={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 379 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 379 mSDsluCounter, 444 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 277 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 527 IncrementalHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 167 mSDtfsCounter, 527 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=1, InterpolantAutomatonStates: 43, 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, 7 MinimizatonAttempts, 102 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 547 SizeOfPredicates, 31 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:25:35,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233dafdc-fe2c-4837-a96a-fdeba2a3fba1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample