./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN --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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:40:42,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:40:42,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:40:42,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:40:42,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:40:42,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:40:42,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:40:42,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:40:42,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:40:42,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:40:42,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:40:42,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:40:42,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:40:42,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:40:42,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:40:42,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:40:42,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:40:42,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:40:42,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:40:42,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:40:42,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:40:42,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:40:42,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:40:42,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:40:42,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:40:42,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:40:42,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:40:42,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:40:42,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:40:42,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:40:42,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:40:42,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:40:42,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:40:42,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:40:42,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:40:42,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:40:42,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:40:42,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:40:42,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:40:42,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:40:42,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:40:42,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:40:42,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:40:42,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:40:42,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:40:42,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:40:42,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:40:42,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:40:42,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:40:42,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:40:42,403 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:40:42,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:40:42,404 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:40:42,404 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:40:42,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:40:42,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:40:42,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:40:42,405 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:40:42,406 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:40:42,406 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:40:42,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:40:42,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:40:42,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:40:42,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:40:42,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:40:42,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:40:42,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:40:42,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:40:42,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:40:42,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:40:42,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:40:42,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:40:42,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-11-20 10:40:42,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:40:42,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:40:42,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:40:42,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:40:42,725 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:40:42,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 10:40:45,823 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:40:46,087 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:40:46,088 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 10:40:46,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/data/b4464ae53/1d6ae3992d96416cb127283985932a69/FLAGb16c3426e [2022-11-20 10:40:46,125 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/data/b4464ae53/1d6ae3992d96416cb127283985932a69 [2022-11-20 10:40:46,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:40:46,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:40:46,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:40:46,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:40:46,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:40:46,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0c57ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46, skipping insertion in model container [2022-11-20 10:40:46,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:40:46,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:40:46,375 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_200811fa-10ea-468d-9efd-bf3cd9aed935/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-20 10:40:46,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:40:46,552 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:40:46,570 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_200811fa-10ea-468d-9efd-bf3cd9aed935/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-20 10:40:46,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:40:46,634 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:40:46,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46 WrapperNode [2022-11-20 10:40:46,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:40:46,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:40:46,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:40:46,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:40:46,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,681 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2022-11-20 10:40:46,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:40:46,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:40:46,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:40:46,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:40:46,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:40:46,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:40:46,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:40:46,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:40:46,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (1/1) ... [2022-11-20 10:40:46,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:40:46,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:46,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:40:46,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:40:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-20 10:40:46,804 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-20 10:40:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:40:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:40:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:40:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:40:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:40:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:40:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:40:46,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:40:46,808 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:40:47,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:40:47,024 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:40:47,213 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:40:47,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:40:47,222 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:40:47,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:40:47 BoogieIcfgContainer [2022-11-20 10:40:47,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:40:47,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:40:47,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:40:47,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:40:47,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:40:46" (1/3) ... [2022-11-20 10:40:47,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa9b977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:40:47, skipping insertion in model container [2022-11-20 10:40:47,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:46" (2/3) ... [2022-11-20 10:40:47,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa9b977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:40:47, skipping insertion in model container [2022-11-20 10:40:47,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:40:47" (3/3) ... [2022-11-20 10:40:47,235 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 10:40:47,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:40:47,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-20 10:40:47,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:40:47,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:40:47,349 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:40:47,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 251 flow [2022-11-20 10:40:47,411 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 251 flow [2022-11-20 10:40:47,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 251 flow [2022-11-20 10:40:47,504 INFO L130 PetriNetUnfolder]: 10/122 cut-off events. [2022-11-20 10:40:47,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:40:47,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 10/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 203 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-11-20 10:40:47,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 3264 [2022-11-20 10:40:51,705 INFO L134 LiptonReduction]: Checked pairs total: 5202 [2022-11-20 10:40:51,705 INFO L136 LiptonReduction]: Total number of compositions: 120 [2022-11-20 10:40:51,714 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 30 transitions, 65 flow [2022-11-20 10:40:51,735 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 120 states, 113 states have (on average 2.3628318584070795) internal successors, (267), 119 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:51,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:40:51,761 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55c8889b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:40:51,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-20 10:40:51,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 113 states have (on average 2.3628318584070795) internal successors, (267), 119 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:40:51,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:51,769 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:40:51,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash 492, now seen corresponding path program 1 times [2022-11-20 10:40:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:51,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256636981] [2022-11-20 10:40:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:51,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256636981] [2022-11-20 10:40:51,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256636981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:51,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:51,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:40:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900016173] [2022-11-20 10:40:51,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:51,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:40:51,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:40:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:40:51,928 INFO L87 Difference]: Start difference. First operand has 120 states, 113 states have (on average 2.3628318584070795) internal successors, (267), 119 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:51,991 INFO L93 Difference]: Finished difference Result 110 states and 248 transitions. [2022-11-20 10:40:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:40:51,994 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-20 10:40:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:52,004 INFO L225 Difference]: With dead ends: 110 [2022-11-20 10:40:52,004 INFO L226 Difference]: Without dead ends: 110 [2022-11-20 10:40:52,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:40:52,009 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:52,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:40:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-20 10:40:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-20 10:40:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 2.339622641509434) internal successors, (248), 109 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 248 transitions. [2022-11-20 10:40:52,077 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 248 transitions. Word has length 1 [2022-11-20 10:40:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:52,077 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 248 transitions. [2022-11-20 10:40:52,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 248 transitions. [2022-11-20 10:40:52,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:40:52,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:52,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:40:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:40:52,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash 15029605, now seen corresponding path program 1 times [2022-11-20 10:40:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:52,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254246698] [2022-11-20 10:40:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254246698] [2022-11-20 10:40:52,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254246698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:52,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:52,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:40:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025977779] [2022-11-20 10:40:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:40:52,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:40:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:52,330 INFO L87 Difference]: Start difference. First operand 110 states and 248 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:52,402 INFO L93 Difference]: Finished difference Result 98 states and 222 transitions. [2022-11-20 10:40:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:40:52,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:40:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:52,405 INFO L225 Difference]: With dead ends: 98 [2022-11-20 10:40:52,405 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 10:40:52,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:52,407 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:52,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 10:40:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 10:40:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 2.3125) internal successors, (222), 97 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 222 transitions. [2022-11-20 10:40:52,419 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 222 transitions. Word has length 4 [2022-11-20 10:40:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:52,420 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 222 transitions. [2022-11-20 10:40:52,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 222 transitions. [2022-11-20 10:40:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:40:52,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:52,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:40:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:40:52,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1555230560, now seen corresponding path program 1 times [2022-11-20 10:40:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:52,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138167918] [2022-11-20 10:40:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:52,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:52,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138167918] [2022-11-20 10:40:52,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138167918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:52,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:52,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:40:52,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730769268] [2022-11-20 10:40:52,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:52,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:40:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:40:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:52,608 INFO L87 Difference]: Start difference. First operand 98 states and 222 transitions. Second operand has 3 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) [2022-11-20 10:40:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:52,691 INFO L93 Difference]: Finished difference Result 121 states and 259 transitions. [2022-11-20 10:40:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:40:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-20 10:40:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:52,693 INFO L225 Difference]: With dead ends: 121 [2022-11-20 10:40:52,694 INFO L226 Difference]: Without dead ends: 117 [2022-11-20 10:40:52,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:52,695 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:52,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-20 10:40:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2022-11-20 10:40:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 2.2142857142857144) internal successors, (248), 113 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 248 transitions. [2022-11-20 10:40:52,708 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 248 transitions. Word has length 6 [2022-11-20 10:40:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:52,709 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 248 transitions. [2022-11-20 10:40:52,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-20 10:40:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 248 transitions. [2022-11-20 10:40:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:40:52,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:52,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:52,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:40:52,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -333207806, now seen corresponding path program 1 times [2022-11-20 10:40:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:52,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387990377] [2022-11-20 10:40:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:52,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:52,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387990377] [2022-11-20 10:40:52,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387990377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:52,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:52,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:40:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98086279] [2022-11-20 10:40:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:52,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:40:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:40:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:52,846 INFO L87 Difference]: Start difference. First operand 114 states and 248 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:52,883 INFO L93 Difference]: Finished difference Result 50 states and 83 transitions. [2022-11-20 10:40:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:40:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:40:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:52,886 INFO L225 Difference]: With dead ends: 50 [2022-11-20 10:40:52,886 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 10:40:52,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:52,890 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:52,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:40:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 10:40:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2022-11-20 10:40:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.7) internal successors, (68), 41 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 68 transitions. [2022-11-20 10:40:52,895 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 68 transitions. Word has length 11 [2022-11-20 10:40:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:52,896 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 68 transitions. [2022-11-20 10:40:52,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:52,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 68 transitions. [2022-11-20 10:40:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:40:52,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:52,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:52,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:40:52,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:52,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:52,898 INFO L85 PathProgramCache]: Analyzing trace with hash 60719317, now seen corresponding path program 1 times [2022-11-20 10:40:52,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:52,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433041029] [2022-11-20 10:40:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:52,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433041029] [2022-11-20 10:40:52,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433041029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:52,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:52,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:40:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55348959] [2022-11-20 10:40:52,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:52,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:40:52,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:40:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:40:52,975 INFO L87 Difference]: Start difference. First operand 42 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.4) 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) [2022-11-20 10:40:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:53,075 INFO L93 Difference]: Finished difference Result 56 states and 91 transitions. [2022-11-20 10:40:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:40:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) 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 [2022-11-20 10:40:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:53,077 INFO L225 Difference]: With dead ends: 56 [2022-11-20 10:40:53,078 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 10:40:53,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:40:53,079 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:53,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 10:40:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2022-11-20 10:40:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.6326530612244898) internal successors, (80), 49 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 80 transitions. [2022-11-20 10:40:53,101 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 80 transitions. Word has length 12 [2022-11-20 10:40:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:53,102 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 80 transitions. [2022-11-20 10:40:53,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) 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) [2022-11-20 10:40:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 80 transitions. [2022-11-20 10:40:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:40:53,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:53,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:53,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:40:53,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2129652770, now seen corresponding path program 2 times [2022-11-20 10:40:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:53,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113927107] [2022-11-20 10:40:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:53,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:53,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113927107] [2022-11-20 10:40:53,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113927107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:53,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276118339] [2022-11-20 10:40:53,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:40:53,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:53,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:53,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:53,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:40:53,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:40:53,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:53,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:40:53,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:53,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:53,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276118339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:53,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:53,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-20 10:40:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316583291] [2022-11-20 10:40:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:40:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:40:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:40:53,517 INFO L87 Difference]: Start difference. First operand 50 states and 80 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:53,652 INFO L93 Difference]: Finished difference Result 78 states and 126 transitions. [2022-11-20 10:40:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:40:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2022-11-20 10:40:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:53,654 INFO L225 Difference]: With dead ends: 78 [2022-11-20 10:40:53,654 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 10:40:53,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:40:53,655 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:53,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 10:40:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 46. [2022-11-20 10:40:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 72 transitions. [2022-11-20 10:40:53,660 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 72 transitions. Word has length 17 [2022-11-20 10:40:53,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:53,660 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 72 transitions. [2022-11-20 10:40:53,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 72 transitions. [2022-11-20 10:40:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:40:53,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:53,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:53,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:53,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:53,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:53,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1693860313, now seen corresponding path program 1 times [2022-11-20 10:40:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:53,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596681665] [2022-11-20 10:40:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596681665] [2022-11-20 10:40:54,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596681665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:54,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:54,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:40:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778859168] [2022-11-20 10:40:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:54,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:40:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:40:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:40:54,051 INFO L87 Difference]: Start difference. First operand 46 states and 72 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:54,149 INFO L93 Difference]: Finished difference Result 71 states and 114 transitions. [2022-11-20 10:40:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:40:54,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-11-20 10:40:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:54,151 INFO L225 Difference]: With dead ends: 71 [2022-11-20 10:40:54,151 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 10:40:54,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:40:54,152 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:54,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 11 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 10:40:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2022-11-20 10:40:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2022-11-20 10:40:54,156 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 19 [2022-11-20 10:40:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:54,156 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2022-11-20 10:40:54,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2022-11-20 10:40:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:40:54,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:54,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:40:54,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2022-11-20 10:40:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1978675728, now seen corresponding path program 2 times [2022-11-20 10:40:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:54,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906209464] [2022-11-20 10:40:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:54,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906209464] [2022-11-20 10:40:54,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906209464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:54,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:54,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:40:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919055022] [2022-11-20 10:40:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:40:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:40:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:40:54,246 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:54,318 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2022-11-20 10:40:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:40:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 10:40:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:54,319 INFO L225 Difference]: With dead ends: 43 [2022-11-20 10:40:54,319 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:40:54,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:40:54,320 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:54,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 10 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:40:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:40:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:40:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:40:54,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-11-20 10:40:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:54,322 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:40:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:40:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:40:54,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:40:54,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2022-11-20 10:40:54,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-20 10:40:54,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2022-11-20 10:40:54,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2022-11-20 10:40:54,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2022-11-20 10:40:54,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-20 10:40:54,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2022-11-20 10:40:54,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2022-11-20 10:40:54,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:40:54,330 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-11-20 10:40:54,335 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:40:54,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:40:54,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:40:54 BasicIcfg [2022-11-20 10:40:54,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:40:54,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:40:54,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:40:54,339 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:40:54,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:40:47" (3/4) ... [2022-11-20 10:40:54,342 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:40:54,348 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2022-11-20 10:40:54,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-20 10:40:54,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 10:40:54,353 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 10:40:54,353 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:40:54,382 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:40:54,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:40:54,383 INFO L158 Benchmark]: Toolchain (without parser) took 8249.45ms. Allocated memory was 172.0MB in the beginning and 209.7MB in the end (delta: 37.7MB). Free memory was 125.7MB in the beginning and 126.0MB in the end (delta: -293.7kB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2022-11-20 10:40:54,384 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory was 72.8MB in the beginning and 72.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:40:54,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.02ms. Allocated memory is still 172.0MB. Free memory was 125.7MB in the beginning and 106.1MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 10:40:54,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.32ms. Allocated memory is still 172.0MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:40:54,385 INFO L158 Benchmark]: Boogie Preprocessor took 27.30ms. Allocated memory is still 172.0MB. Free memory was 104.0MB in the beginning and 102.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:40:54,385 INFO L158 Benchmark]: RCFGBuilder took 514.57ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 87.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 10:40:54,385 INFO L158 Benchmark]: TraceAbstraction took 7110.95ms. Allocated memory was 172.0MB in the beginning and 209.7MB in the end (delta: 37.7MB). Free memory was 87.3MB in the beginning and 129.1MB in the end (delta: -41.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:40:54,386 INFO L158 Benchmark]: Witness Printer took 44.39ms. Allocated memory is still 209.7MB. Free memory was 129.1MB in the beginning and 126.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:40:54,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory was 72.8MB in the beginning and 72.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.02ms. Allocated memory is still 172.0MB. Free memory was 125.7MB in the beginning and 106.1MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.32ms. Allocated memory is still 172.0MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.30ms. Allocated memory is still 172.0MB. Free memory was 104.0MB in the beginning and 102.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.57ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 87.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7110.95ms. Allocated memory was 172.0MB in the beginning and 209.7MB in the end (delta: 37.7MB). Free memory was 87.3MB in the beginning and 129.1MB in the end (delta: -41.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.39ms. Allocated memory is still 209.7MB. Free memory was 129.1MB in the beginning and 126.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 117 PlacesBefore, 29 PlacesAfterwards, 123 TransitionsBefore, 30 TransitionsAfterwards, 3264 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 5 ChoiceCompositions, 120 TotalNumberOfCompositions, 5202 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3526, independent: 3336, independent conditional: 0, independent unconditional: 3336, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2232, independent: 2175, independent conditional: 0, independent unconditional: 2175, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2232, independent: 2159, independent conditional: 0, independent unconditional: 2159, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 73, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 146, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3526, independent: 1161, independent conditional: 0, independent unconditional: 1161, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 2232, unknown conditional: 0, unknown unconditional: 2232] , Statistics on independence cache: Total cache size (in pairs): 175, Positive cache size: 149, Positive conditional cache size: 0, Positive unconditional cache size: 149, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 739]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 157 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 497 IncrementalHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 46 mSDtfsCounter, 497 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 62 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 271 SizeOfPredicates, 4 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 15/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:40:54,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200811fa-10ea-468d-9efd-bf3cd9aed935/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE