./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS --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 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- 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-4e7fbc6 [2022-11-23 03:56:23,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:56:23,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:56:23,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:56:23,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:56:23,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:56:23,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:56:23,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:56:23,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:56:23,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:56:23,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:56:23,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:56:23,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:56:23,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:56:23,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:56:23,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:56:23,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:56:23,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:56:23,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:56:23,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:56:23,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:56:23,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:56:23,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:56:23,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:56:23,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:56:23,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:56:23,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:56:23,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:56:23,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:56:23,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:56:23,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:56:23,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:56:23,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:56:23,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:56:23,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:56:23,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:56:23,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:56:23,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:56:23,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:56:23,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:56:23,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:56:23,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 03:56:23,413 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:56:23,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:56:23,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:56:23,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:56:23,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:56:23,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:56:23,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:56:23,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:56:23,429 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:56:23,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:56:23,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:56:23,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:56:23,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:56:23,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:56:23,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:56:23,432 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:56:23,432 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:56:23,432 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:56:23,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:56:23,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:56:23,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:56:23,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:56:23,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:56:23,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:56:23,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:56:23,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:56:23,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:56:23,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:56:23,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:56:23,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:56:23,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:56:23,437 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:56:23,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:56:23,437 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2022-11-23 03:56:23,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:56:23,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:56:23,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:56:23,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:56:23,711 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:56:23,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2022-11-23 03:56:26,852 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:56:27,149 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:56:27,150 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/sv-benchmarks/c/memsafety/lockfree-3.2.i [2022-11-23 03:56:27,161 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data/0848a4809/331a3c2b313543cfbb63e836bf2bab31/FLAGca50850e0 [2022-11-23 03:56:27,176 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data/0848a4809/331a3c2b313543cfbb63e836bf2bab31 [2022-11-23 03:56:27,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:56:27,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:56:27,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:56:27,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:56:27,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:56:27,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee2b112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27, skipping insertion in model container [2022-11-23 03:56:27,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:56:27,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:56:27,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:56:27,549 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:56:27,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:56:27,618 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:56:27,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27 WrapperNode [2022-11-23 03:56:27,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:56:27,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:56:27,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:56:27,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:56:27,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,660 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-11-23 03:56:27,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:56:27,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:56:27,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:56:27,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:56:27,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:56:27,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:56:27,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:56:27,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:56:27,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (1/1) ... [2022-11-23 03:56:27,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:56:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:56:27,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:56:27,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:56:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:56:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:56:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:56:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:56:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:56:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 03:56:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:56:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:56:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:56:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:56:27,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:56:27,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:56:28,207 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:56:28,227 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:56:28,227 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:56:28,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:28 BoogieIcfgContainer [2022-11-23 03:56:28,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:56:28,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:56:28,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:56:28,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:56:28,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:56:27" (1/3) ... [2022-11-23 03:56:28,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e21e0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:28, skipping insertion in model container [2022-11-23 03:56:28,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:27" (2/3) ... [2022-11-23 03:56:28,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e21e0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:28, skipping insertion in model container [2022-11-23 03:56:28,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:28" (3/3) ... [2022-11-23 03:56:28,238 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2022-11-23 03:56:28,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:56:28,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-23 03:56:28,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:56:28,339 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f322065, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:56:28,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-23 03:56:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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) [2022-11-23 03:56:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 03:56:28,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:28,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:56:28,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2022-11-23 03:56:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:28,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77552420] [2022-11-23 03:56:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:28,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:28,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77552420] [2022-11-23 03:56:28,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77552420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:28,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:28,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012582164] [2022-11-23 03:56:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:28,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:56:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:56:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:56:28,654 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:28,682 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2022-11-23 03:56:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:56:28,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 03:56:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:28,717 INFO L225 Difference]: With dead ends: 64 [2022-11-23 03:56:28,717 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 03:56:28,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:56:28,721 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:28,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 03:56:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-23 03:56:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 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) [2022-11-23 03:56:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-23 03:56:28,768 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2022-11-23 03:56:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:28,769 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-23 03:56:28,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-23 03:56:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 03:56:28,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:28,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:56:28,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2022-11-23 03:56:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:28,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886827980] [2022-11-23 03:56:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:28,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:28,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886827980] [2022-11-23 03:56:28,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886827980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:28,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:28,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:56:28,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523925783] [2022-11-23 03:56:28,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:28,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:28,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:28,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:28,922 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:28,942 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2022-11-23 03:56:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:28,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 03:56:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:28,944 INFO L225 Difference]: With dead ends: 63 [2022-11-23 03:56:28,944 INFO L226 Difference]: Without dead ends: 63 [2022-11-23 03:56:28,945 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 [2022-11-23 03:56:28,946 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:28,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-23 03:56:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-23 03:56:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 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) [2022-11-23 03:56:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2022-11-23 03:56:28,960 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 7 [2022-11-23 03:56:28,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:28,960 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2022-11-23 03:56:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2022-11-23 03:56:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 03:56:28,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:28,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:56:28,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2022-11-23 03:56:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:28,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946582974] [2022-11-23 03:56:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:29,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946582974] [2022-11-23 03:56:29,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946582974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:29,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:29,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584353066] [2022-11-23 03:56:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:29,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:29,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,053 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:29,091 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2022-11-23 03:56:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 03:56:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:29,093 INFO L225 Difference]: With dead ends: 111 [2022-11-23 03:56:29,094 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 03:56:29,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,095 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:29,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:29,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 03:56:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2022-11-23 03:56:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 92 states have internal predecessors, (137), 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) [2022-11-23 03:56:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2022-11-23 03:56:29,108 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 7 [2022-11-23 03:56:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:29,108 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2022-11-23 03:56:29,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2022-11-23 03:56:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:56:29,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:29,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:56:29,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2022-11-23 03:56:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:29,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767289448] [2022-11-23 03:56:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:29,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767289448] [2022-11-23 03:56:29,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767289448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:29,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:29,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:56:29,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490285712] [2022-11-23 03:56:29,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:29,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:29,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:29,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:29,265 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:29,325 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2022-11-23 03:56:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:56:29,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 03:56:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:29,327 INFO L225 Difference]: With dead ends: 122 [2022-11-23 03:56:29,327 INFO L226 Difference]: Without dead ends: 122 [2022-11-23 03:56:29,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:29,329 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 34 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:29,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 208 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-23 03:56:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2022-11-23 03:56:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.9) internal successors, (171), 109 states have internal predecessors, (171), 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) [2022-11-23 03:56:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 171 transitions. [2022-11-23 03:56:29,341 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 171 transitions. Word has length 8 [2022-11-23 03:56:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:29,341 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 171 transitions. [2022-11-23 03:56:29,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 171 transitions. [2022-11-23 03:56:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:56:29,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:29,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:29,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:56:29,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2022-11-23 03:56:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:29,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763461519] [2022-11-23 03:56:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:29,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:29,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763461519] [2022-11-23 03:56:29,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763461519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:29,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:29,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426411423] [2022-11-23 03:56:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:29,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,412 INFO L87 Difference]: Start difference. First operand 110 states and 171 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:29,473 INFO L93 Difference]: Finished difference Result 207 states and 321 transitions. [2022-11-23 03:56:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:29,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 03:56:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:29,475 INFO L225 Difference]: With dead ends: 207 [2022-11-23 03:56:29,475 INFO L226 Difference]: Without dead ends: 204 [2022-11-23 03:56:29,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,477 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:29,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-23 03:56:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 183. [2022-11-23 03:56:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 163 states have (on average 1.8711656441717792) internal successors, (305), 182 states have internal predecessors, (305), 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) [2022-11-23 03:56:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 305 transitions. [2022-11-23 03:56:29,506 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 305 transitions. Word has length 8 [2022-11-23 03:56:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:29,506 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 305 transitions. [2022-11-23 03:56:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 305 transitions. [2022-11-23 03:56:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:56:29,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:29,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:29,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:56:29,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2022-11-23 03:56:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:29,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240263668] [2022-11-23 03:56:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:29,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:29,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240263668] [2022-11-23 03:56:29,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240263668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:29,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:29,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:29,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016731304] [2022-11-23 03:56:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,632 INFO L87 Difference]: Start difference. First operand 183 states and 305 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:29,730 INFO L93 Difference]: Finished difference Result 274 states and 434 transitions. [2022-11-23 03:56:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 03:56:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:29,735 INFO L225 Difference]: With dead ends: 274 [2022-11-23 03:56:29,735 INFO L226 Difference]: Without dead ends: 274 [2022-11-23 03:56:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,744 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:29,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 172 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-23 03:56:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 253. [2022-11-23 03:56:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 235 states have (on average 1.7872340425531914) internal successors, (420), 252 states have internal predecessors, (420), 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) [2022-11-23 03:56:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 420 transitions. [2022-11-23 03:56:29,776 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 420 transitions. Word has length 8 [2022-11-23 03:56:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:29,776 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 420 transitions. [2022-11-23 03:56:29,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 420 transitions. [2022-11-23 03:56:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:56:29,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:29,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:56:29,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2022-11-23 03:56:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:29,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054407201] [2022-11-23 03:56:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:29,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:29,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054407201] [2022-11-23 03:56:29,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054407201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:29,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:29,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064955508] [2022-11-23 03:56:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:29,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:29,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,865 INFO L87 Difference]: Start difference. First operand 253 states and 420 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:29,919 INFO L93 Difference]: Finished difference Result 269 states and 421 transitions. [2022-11-23 03:56:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:29,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 03:56:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:29,921 INFO L225 Difference]: With dead ends: 269 [2022-11-23 03:56:29,921 INFO L226 Difference]: Without dead ends: 269 [2022-11-23 03:56:29,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:29,922 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:29,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-23 03:56:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 251. [2022-11-23 03:56:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 235 states have (on average 1.7361702127659575) internal successors, (408), 250 states have internal predecessors, (408), 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) [2022-11-23 03:56:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 408 transitions. [2022-11-23 03:56:29,934 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 408 transitions. Word has length 8 [2022-11-23 03:56:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:29,935 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 408 transitions. [2022-11-23 03:56:29,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 408 transitions. [2022-11-23 03:56:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 03:56:29,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:29,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:29,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:56:29,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2022-11-23 03:56:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:29,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221847630] [2022-11-23 03:56:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:29,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:30,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:30,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221847630] [2022-11-23 03:56:30,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221847630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:30,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:30,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:56:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271835313] [2022-11-23 03:56:30,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:30,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:30,015 INFO L87 Difference]: Start difference. First operand 251 states and 408 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-23 03:56:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:30,051 INFO L93 Difference]: Finished difference Result 296 states and 411 transitions. [2022-11-23 03:56:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:56:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-23 03:56:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:30,053 INFO L225 Difference]: With dead ends: 296 [2022-11-23 03:56:30,054 INFO L226 Difference]: Without dead ends: 296 [2022-11-23 03:56:30,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:30,056 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 105 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:30,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 283 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-23 03:56:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 188. [2022-11-23 03:56:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 176 states have (on average 1.6534090909090908) internal successors, (291), 187 states have internal predecessors, (291), 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) [2022-11-23 03:56:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 291 transitions. [2022-11-23 03:56:30,076 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 291 transitions. Word has length 9 [2022-11-23 03:56:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:30,078 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 291 transitions. [2022-11-23 03:56:30,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-23 03:56:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 291 transitions. [2022-11-23 03:56:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 03:56:30,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:30,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:30,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:56:30,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2022-11-23 03:56:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:30,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756325834] [2022-11-23 03:56:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:30,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:30,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756325834] [2022-11-23 03:56:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756325834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:56:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964795909] [2022-11-23 03:56:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:30,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:30,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:30,211 INFO L87 Difference]: Start difference. First operand 188 states and 291 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-23 03:56:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:30,292 INFO L93 Difference]: Finished difference Result 385 states and 562 transitions. [2022-11-23 03:56:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:56:30,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-23 03:56:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:30,294 INFO L225 Difference]: With dead ends: 385 [2022-11-23 03:56:30,294 INFO L226 Difference]: Without dead ends: 385 [2022-11-23 03:56:30,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:30,295 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 108 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:30,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 232 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-23 03:56:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 259. [2022-11-23 03:56:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 247 states have (on average 1.591093117408907) internal successors, (393), 258 states have internal predecessors, (393), 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) [2022-11-23 03:56:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 393 transitions. [2022-11-23 03:56:30,303 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 393 transitions. Word has length 10 [2022-11-23 03:56:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:30,303 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 393 transitions. [2022-11-23 03:56:30,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-23 03:56:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 393 transitions. [2022-11-23 03:56:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 03:56:30,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:30,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:56:30,305 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2022-11-23 03:56:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:30,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004908169] [2022-11-23 03:56:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:56:30,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:56:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:56:30,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:56:30,354 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:56:30,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2022-11-23 03:56:30,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2022-11-23 03:56:30,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2022-11-23 03:56:30,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2022-11-23 03:56:30,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2022-11-23 03:56:30,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2022-11-23 03:56:30,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2022-11-23 03:56:30,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2022-11-23 03:56:30,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2022-11-23 03:56:30,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2022-11-23 03:56:30,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2022-11-23 03:56:30,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2022-11-23 03:56:30,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2022-11-23 03:56:30,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2022-11-23 03:56:30,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2022-11-23 03:56:30,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2022-11-23 03:56:30,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2022-11-23 03:56:30,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2022-11-23 03:56:30,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2022-11-23 03:56:30,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2022-11-23 03:56:30,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:56:30,364 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:30,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:56:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:56:30 BoogieIcfgContainer [2022-11-23 03:56:30,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:56:30,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:56:30,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:56:30,396 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:56:30,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:28" (3/4) ... [2022-11-23 03:56:30,399 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:56:30,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:56:30,400 INFO L158 Benchmark]: Toolchain (without parser) took 3216.92ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 112.7MB in the beginning and 140.5MB in the end (delta: -27.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-23 03:56:30,400 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:56:30,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.35ms. Allocated memory is still 144.7MB. Free memory was 112.2MB in the beginning and 95.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 03:56:30,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.43ms. Allocated memory is still 144.7MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:56:30,401 INFO L158 Benchmark]: Boogie Preprocessor took 29.07ms. Allocated memory is still 144.7MB. Free memory was 92.9MB in the beginning and 91.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:56:30,402 INFO L158 Benchmark]: RCFGBuilder took 537.73ms. Allocated memory is still 144.7MB. Free memory was 91.3MB in the beginning and 72.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 03:56:30,402 INFO L158 Benchmark]: TraceAbstraction took 2163.76ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 72.4MB in the beginning and 140.5MB in the end (delta: -68.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:56:30,402 INFO L158 Benchmark]: Witness Printer took 4.15ms. Allocated memory is still 192.9MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:56:30,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.35ms. Allocated memory is still 144.7MB. Free memory was 112.2MB in the beginning and 95.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.43ms. Allocated memory is still 144.7MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.07ms. Allocated memory is still 144.7MB. Free memory was 92.9MB in the beginning and 91.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 537.73ms. Allocated memory is still 144.7MB. Free memory was 91.3MB in the beginning and 72.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2163.76ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 72.4MB in the beginning and 140.5MB in the end (delta: -68.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.15ms. Allocated memory is still 192.9MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 505 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 505 mSDsluCounter, 1565 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 658 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 907 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=9, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 324 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 03:56:30,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS --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 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- 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-4e7fbc6 [2022-11-23 03:56:32,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:56:32,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:56:32,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:56:32,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:56:32,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:56:32,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:56:32,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:56:32,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:56:32,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:56:32,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:56:32,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:56:32,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:56:32,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:56:32,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:56:32,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:56:32,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:56:32,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:56:32,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:56:32,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:56:32,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:56:32,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:56:32,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:56:32,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:56:33,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:56:33,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:56:33,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:56:33,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:56:33,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:56:33,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:56:33,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:56:33,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:56:33,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:56:33,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:56:33,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:56:33,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:56:33,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:56:33,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:56:33,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:56:33,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:56:33,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:56:33,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-23 03:56:33,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:56:33,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:56:33,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:56:33,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:56:33,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:56:33,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:56:33,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:56:33,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:56:33,080 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:56:33,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:56:33,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:56:33,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:56:33,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:56:33,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:56:33,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:56:33,083 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:56:33,083 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:56:33,084 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:56:33,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:56:33,084 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:56:33,084 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:56:33,085 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:56:33,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:56:33,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:56:33,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:56:33,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:56:33,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:56:33,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:56:33,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:56:33,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:56:33,087 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:56:33,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:56:33,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:56:33,088 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:56:33,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:56:33,089 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:56:33,089 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2022-11-23 03:56:33,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:56:33,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:56:33,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:56:33,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:56:33,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:56:33,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2022-11-23 03:56:36,669 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:56:37,039 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:56:37,040 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/sv-benchmarks/c/memsafety/lockfree-3.2.i [2022-11-23 03:56:37,060 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data/8b10b0140/6a5d149862d449eb9c4258df4d46e3ef/FLAG56377431c [2022-11-23 03:56:37,097 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/data/8b10b0140/6a5d149862d449eb9c4258df4d46e3ef [2022-11-23 03:56:37,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:56:37,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:56:37,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:56:37,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:56:37,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:56:37,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53181bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37, skipping insertion in model container [2022-11-23 03:56:37,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:56:37,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:56:37,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:56:37,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:56:37,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:56:37,738 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:56:37,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37 WrapperNode [2022-11-23 03:56:37,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:56:37,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:56:37,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:56:37,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:56:37,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,859 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2022-11-23 03:56:37,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:56:37,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:56:37,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:56:37,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:56:37,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:56:37,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:56:37,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:56:37,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:56:37,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (1/1) ... [2022-11-23 03:56:37,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:56:37,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:56:37,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:56:38,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:56:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 03:56:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:56:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:56:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:56:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 03:56:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:56:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 03:56:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 03:56:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:56:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:56:38,207 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:56:38,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:56:38,671 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:56:38,678 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:56:38,678 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:56:38,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:38 BoogieIcfgContainer [2022-11-23 03:56:38,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:56:38,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:56:38,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:56:38,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:56:38,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:56:37" (1/3) ... [2022-11-23 03:56:38,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b187faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:38, skipping insertion in model container [2022-11-23 03:56:38,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:37" (2/3) ... [2022-11-23 03:56:38,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b187faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:38, skipping insertion in model container [2022-11-23 03:56:38,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:38" (3/3) ... [2022-11-23 03:56:38,690 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2022-11-23 03:56:38,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:56:38,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-23 03:56:38,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:56:38,768 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@452c53d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:56:38,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-23 03:56:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 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) [2022-11-23 03:56:38,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 03:56:38,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:38,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:56:38,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 28701640, now seen corresponding path program 1 times [2022-11-23 03:56:38,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:38,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981754076] [2022-11-23 03:56:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:38,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:38,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:38,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 03:56:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:38,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:56:38,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:39,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:56:39,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:39,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981754076] [2022-11-23 03:56:39,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981754076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:39,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:39,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:39,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514979524] [2022-11-23 03:56:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:39,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:39,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:39,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:39,048 INFO L87 Difference]: Start difference. First operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:39,133 INFO L93 Difference]: Finished difference Result 107 states and 139 transitions. [2022-11-23 03:56:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:39,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 03:56:39,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:39,147 INFO L225 Difference]: With dead ends: 107 [2022-11-23 03:56:39,148 INFO L226 Difference]: Without dead ends: 105 [2022-11-23 03:56:39,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:39,153 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 63 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:39,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-23 03:56:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2022-11-23 03:56:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 86 states have internal predecessors, (129), 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) [2022-11-23 03:56:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2022-11-23 03:56:39,197 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 5 [2022-11-23 03:56:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:39,198 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2022-11-23 03:56:39,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2022-11-23 03:56:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 03:56:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:39,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:56:39,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:56:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:39,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash 889749439, now seen corresponding path program 1 times [2022-11-23 03:56:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:39,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822638796] [2022-11-23 03:56:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:39,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:39,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:39,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:39,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 03:56:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:39,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:56:39,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:39,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:56:39,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:39,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822638796] [2022-11-23 03:56:39,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822638796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:39,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:39,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814165715] [2022-11-23 03:56:39,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:39,527 INFO L87 Difference]: Start difference. First operand 87 states and 129 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 03:56:39,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:39,669 INFO L93 Difference]: Finished difference Result 163 states and 243 transitions. [2022-11-23 03:56:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:39,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-23 03:56:39,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:39,671 INFO L225 Difference]: With dead ends: 163 [2022-11-23 03:56:39,671 INFO L226 Difference]: Without dead ends: 160 [2022-11-23 03:56:39,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:39,673 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 62 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:39,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 116 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-23 03:56:39,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 140. [2022-11-23 03:56:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.9083333333333334) internal successors, (229), 139 states have internal predecessors, (229), 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) [2022-11-23 03:56:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 229 transitions. [2022-11-23 03:56:39,692 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 229 transitions. Word has length 6 [2022-11-23 03:56:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:39,693 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 229 transitions. [2022-11-23 03:56:39,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 03:56:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 229 transitions. [2022-11-23 03:56:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 03:56:39,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:39,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:56:39,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:56:39,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:39,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 889692424, now seen corresponding path program 1 times [2022-11-23 03:56:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:39,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509071598] [2022-11-23 03:56:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:39,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:39,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:39,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:39,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 03:56:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:40,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:56:40,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:40,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 03:56:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:40,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:56:40,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:40,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509071598] [2022-11-23 03:56:40,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509071598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:40,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:40,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:40,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79461820] [2022-11-23 03:56:40,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:40,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:40,081 INFO L87 Difference]: Start difference. First operand 140 states and 229 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 03:56:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:40,346 INFO L93 Difference]: Finished difference Result 211 states and 330 transitions. [2022-11-23 03:56:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:40,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-23 03:56:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:40,349 INFO L225 Difference]: With dead ends: 211 [2022-11-23 03:56:40,349 INFO L226 Difference]: Without dead ends: 211 [2022-11-23 03:56:40,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:40,350 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 64 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:40,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 163 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:56:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-23 03:56:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2022-11-23 03:56:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 172 states have (on average 1.8372093023255813) internal successors, (316), 189 states have internal predecessors, (316), 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) [2022-11-23 03:56:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 316 transitions. [2022-11-23 03:56:40,389 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 316 transitions. Word has length 6 [2022-11-23 03:56:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:40,389 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 316 transitions. [2022-11-23 03:56:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 03:56:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 316 transitions. [2022-11-23 03:56:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 03:56:40,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:40,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:56:40,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-23 03:56:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:40,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 889692425, now seen corresponding path program 1 times [2022-11-23 03:56:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858127375] [2022-11-23 03:56:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:40,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:40,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:40,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:40,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 03:56:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:40,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:56:40,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:40,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 03:56:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:40,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:56:40,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:40,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858127375] [2022-11-23 03:56:40,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858127375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:40,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:40,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:56:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536308629] [2022-11-23 03:56:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:56:40,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:56:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:40,724 INFO L87 Difference]: Start difference. First operand 190 states and 316 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 03:56:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:40,892 INFO L93 Difference]: Finished difference Result 206 states and 321 transitions. [2022-11-23 03:56:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:56:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-23 03:56:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:40,895 INFO L225 Difference]: With dead ends: 206 [2022-11-23 03:56:40,895 INFO L226 Difference]: Without dead ends: 206 [2022-11-23 03:56:40,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:56:40,896 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 63 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:40,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:56:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-23 03:56:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2022-11-23 03:56:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 172 states have (on average 1.7906976744186047) internal successors, (308), 187 states have internal predecessors, (308), 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) [2022-11-23 03:56:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 308 transitions. [2022-11-23 03:56:40,914 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 308 transitions. Word has length 6 [2022-11-23 03:56:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:40,914 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 308 transitions. [2022-11-23 03:56:40,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 03:56:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 308 transitions. [2022-11-23 03:56:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 03:56:40,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:40,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:40,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:56:41,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:41,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1810669365, now seen corresponding path program 1 times [2022-11-23 03:56:41,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:41,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514827566] [2022-11-23 03:56:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:41,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:41,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:41,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 03:56:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:41,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:56:41,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:41,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:56:41,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:41,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514827566] [2022-11-23 03:56:41,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514827566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:41,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:41,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:56:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424770800] [2022-11-23 03:56:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:41,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:41,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:41,224 INFO L87 Difference]: Start difference. First operand 188 states and 308 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:41,296 INFO L93 Difference]: Finished difference Result 240 states and 333 transitions. [2022-11-23 03:56:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:56:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 03:56:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:41,298 INFO L225 Difference]: With dead ends: 240 [2022-11-23 03:56:41,298 INFO L226 Difference]: Without dead ends: 240 [2022-11-23 03:56:41,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:41,304 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 101 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:41,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 268 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-23 03:56:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 144. [2022-11-23 03:56:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 143 states have internal predecessors, (229), 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) [2022-11-23 03:56:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 229 transitions. [2022-11-23 03:56:41,340 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 229 transitions. Word has length 7 [2022-11-23 03:56:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:41,341 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 229 transitions. [2022-11-23 03:56:41,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 229 transitions. [2022-11-23 03:56:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:56:41,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:41,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:41,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:56:41,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:41,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:41,554 INFO L85 PathProgramCache]: Analyzing trace with hash 347531241, now seen corresponding path program 1 times [2022-11-23 03:56:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:41,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570925759] [2022-11-23 03:56:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:41,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:41,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:41,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 03:56:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:41,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:56:41,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:41,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:56:41,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:41,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570925759] [2022-11-23 03:56:41,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570925759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:41,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:41,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:56:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229289589] [2022-11-23 03:56:41,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:41,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:41,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:41,636 INFO L87 Difference]: Start difference. First operand 144 states and 229 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:41,691 INFO L93 Difference]: Finished difference Result 283 states and 430 transitions. [2022-11-23 03:56:41,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:56:41,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 03:56:41,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:41,694 INFO L225 Difference]: With dead ends: 283 [2022-11-23 03:56:41,694 INFO L226 Difference]: Without dead ends: 283 [2022-11-23 03:56:41,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:41,695 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:41,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 196 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:41,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-23 03:56:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 198. [2022-11-23 03:56:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.6559139784946237) internal successors, (308), 197 states have internal predecessors, (308), 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) [2022-11-23 03:56:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 308 transitions. [2022-11-23 03:56:41,709 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 308 transitions. Word has length 8 [2022-11-23 03:56:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:41,709 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 308 transitions. [2022-11-23 03:56:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 03:56:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 308 transitions. [2022-11-23 03:56:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 03:56:41,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:41,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:41,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:56:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:41,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash -527615340, now seen corresponding path program 1 times [2022-11-23 03:56:41,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:41,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042733715] [2022-11-23 03:56:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:41,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:41,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:41,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:41,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 03:56:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:41,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:56:41,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:42,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:56:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:42,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:56:42,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042733715] [2022-11-23 03:56:42,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042733715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:56:42,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:56:42,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-11-23 03:56:42,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807883636] [2022-11-23 03:56:42,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:56:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:56:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:56:42,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:56:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:56:42,081 INFO L87 Difference]: Start difference. First operand 198 states and 308 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) [2022-11-23 03:56:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:42,230 INFO L93 Difference]: Finished difference Result 461 states and 690 transitions. [2022-11-23 03:56:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:56:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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 [2022-11-23 03:56:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:42,233 INFO L225 Difference]: With dead ends: 461 [2022-11-23 03:56:42,233 INFO L226 Difference]: Without dead ends: 461 [2022-11-23 03:56:42,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:56:42,235 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 221 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:42,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 471 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-23 03:56:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 258. [2022-11-23 03:56:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 246 states have (on average 1.6016260162601625) internal successors, (394), 257 states have internal predecessors, (394), 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) [2022-11-23 03:56:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 394 transitions. [2022-11-23 03:56:42,258 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 394 transitions. Word has length 12 [2022-11-23 03:56:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:42,258 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 394 transitions. [2022-11-23 03:56:42,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) [2022-11-23 03:56:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 394 transitions. [2022-11-23 03:56:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 03:56:42,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:42,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:42,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-23 03:56:42,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:42,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-23 03:56:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2027186576, now seen corresponding path program 1 times [2022-11-23 03:56:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:56:42,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356057570] [2022-11-23 03:56:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:42,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:42,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:56:42,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:56:42,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 03:56:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:56:42,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:56:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:56:42,665 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-23 03:56:42,665 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:56:42,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2022-11-23 03:56:42,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2022-11-23 03:56:42,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2022-11-23 03:56:42,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2022-11-23 03:56:42,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2022-11-23 03:56:42,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2022-11-23 03:56:42,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2022-11-23 03:56:42,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2022-11-23 03:56:42,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2022-11-23 03:56:42,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2022-11-23 03:56:42,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2022-11-23 03:56:42,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2022-11-23 03:56:42,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2022-11-23 03:56:42,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2022-11-23 03:56:42,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2022-11-23 03:56:42,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2022-11-23 03:56:42,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2022-11-23 03:56:42,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2022-11-23 03:56:42,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2022-11-23 03:56:42,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2022-11-23 03:56:42,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:56:42,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:56:42,886 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:42,889 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:56:42,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:56:42 BoogieIcfgContainer [2022-11-23 03:56:42,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:56:42,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:56:42,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:56:42,933 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:56:42,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:38" (3/4) ... [2022-11-23 03:56:42,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:56:42,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:56:42,939 INFO L158 Benchmark]: Toolchain (without parser) took 5835.89ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 65.4MB in the beginning and 75.1MB in the end (delta: -9.8MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-11-23 03:56:42,940 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 60.8MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:56:42,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 650.22ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 67.4MB in the end (delta: -2.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-11-23 03:56:42,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.91ms. Allocated memory is still 88.1MB. Free memory was 67.4MB in the beginning and 64.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:56:42,941 INFO L158 Benchmark]: Boogie Preprocessor took 83.73ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 63.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:56:42,942 INFO L158 Benchmark]: RCFGBuilder took 734.61ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 43.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 03:56:42,943 INFO L158 Benchmark]: TraceAbstraction took 4249.10ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 42.3MB in the beginning and 75.1MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:56:42,945 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 107.0MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:56:42,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 60.8MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 650.22ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 67.4MB in the end (delta: -2.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.91ms. Allocated memory is still 88.1MB. Free memory was 67.4MB in the beginning and 64.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.73ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 63.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 734.61ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 43.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4249.10ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 42.3MB in the beginning and 75.1MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 107.0MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 677 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 677 mSDsluCounter, 1517 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 735 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 782 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=7, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 461 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 5 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 03:56:42,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8d7dcb-3826-4a72-82e9-e9647af7d48b/bin/uautomizer-QkZJyEgLgS/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: UNKNOWN: Overapproximated counterexample