./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:27,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:27,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:43:27,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:27,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:27,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:27,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:27,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:27,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:27,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:27,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:27,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:27,373 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:27,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:27,376 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:27,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:27,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:27,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:27,378 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:43:27,379 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:43:27,379 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:43:27,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:27,380 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:43:27,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:27,381 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:27,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:27,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:27,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:27,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:27,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:27,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:27,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:27,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:27,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:27,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:27,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:27,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:27,389 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:27,389 INFO L153 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_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2023-11-19 07:43:27,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:27,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:27,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:27,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:27,733 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:27,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 07:43:30,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:31,258 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:31,258 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 07:43:31,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data/8c1b5af67/cbd17e44216a4c77b24d5ca9cbcf7787/FLAG0e8503f7e [2023-11-19 07:43:31,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data/8c1b5af67/cbd17e44216a4c77b24d5ca9cbcf7787 [2023-11-19 07:43:31,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:31,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:31,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:31,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:31,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:31,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173aec58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31, skipping insertion in model container [2023-11-19 07:43:31,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:31,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:31,993 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:32,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:32,127 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:32,127 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:32,138 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:32,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32 WrapperNode [2023-11-19 07:43:32,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:32,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:32,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:32,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:32,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,227 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-11-19 07:43:32,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:32,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:32,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:32,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:32,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:32,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:32,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:32,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:32,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (1/1) ... [2023-11-19 07:43:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:32,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:32,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:32,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-19 07:43:32,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-19 07:43:32,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:32,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:32,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:43:32,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:32,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:32,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:32,410 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:43:32,620 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:32,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:32,906 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:32,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:32,971 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:43:32,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32 BoogieIcfgContainer [2023-11-19 07:43:32,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:32,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:32,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:32,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:32,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:31" (1/3) ... [2023-11-19 07:43:32,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76242196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:32, skipping insertion in model container [2023-11-19 07:43:32,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:32" (2/3) ... [2023-11-19 07:43:32,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76242196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:32, skipping insertion in model container [2023-11-19 07:43:32,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32" (3/3) ... [2023-11-19 07:43:32,997 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-2.i [2023-11-19 07:43:33,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:33,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:43:33,015 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:33,086 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:33,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:33,263 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-19 07:43:33,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:33,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-19 07:43:33,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:33,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:33,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:33,307 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:33,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:33,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:33,377 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-19 07:43:33,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:33,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-19 07:43:33,382 INFO L119 LiptonReduction]: Number of co-enabled transitions 1560 [2023-11-19 07:43:37,462 INFO L134 LiptonReduction]: Checked pairs total: 1590 [2023-11-19 07:43:37,463 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-19 07:43:37,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:37,489 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;@541876d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:37,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:43:37,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:37,492 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:43:37,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:37,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:37,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:43:37,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:37,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash 13757, now seen corresponding path program 1 times [2023-11-19 07:43:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459927947] [2023-11-19 07:43:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459927947] [2023-11-19 07:43:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459927947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:38,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:38,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152036517] [2023-11-19 07:43:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:38,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:38,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 192 [2023-11-19 07:43:38,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-11-19 07:43:38,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:38,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 192 [2023-11-19 07:43:38,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:38,177 INFO L124 PetriNetUnfolderBase]: 19/47 cut-off events. [2023-11-19 07:43:38,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:38,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 47 events. 19/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 123 event pairs, 15 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 84. Up to 46 conditions per place. [2023-11-19 07:43:38,181 INFO L140 encePairwiseOnDemand]: 188/192 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-11-19 07:43:38,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 50 flow [2023-11-19 07:43:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-11-19 07:43:38,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149305555555556 [2023-11-19 07:43:38,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-11-19 07:43:38,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-11-19 07:43:38,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:38,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-11-19 07:43:38,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2023-11-19 07:43:38,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-11-19 07:43:38,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-11-19 07:43:38,234 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 3 states and 239 transitions. [2023-11-19 07:43:38,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 50 flow [2023-11-19 07:43:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:38,240 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 30 flow [2023-11-19 07:43:38,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-19 07:43:38,249 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:43:38,250 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 30 flow [2023-11-19 07:43:38,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-11-19 07:43:38,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:38,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:43:38,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:38,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:38,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash 13755, now seen corresponding path program 1 times [2023-11-19 07:43:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744560952] [2023-11-19 07:43:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:38,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:38,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744560952] [2023-11-19 07:43:38,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744560952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:38,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:38,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:38,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087234828] [2023-11-19 07:43:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:38,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:38,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 192 [2023-11-19 07:43:38,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-11-19 07:43:38,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:38,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 192 [2023-11-19 07:43:38,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:38,424 INFO L124 PetriNetUnfolderBase]: 13/34 cut-off events. [2023-11-19 07:43:38,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:38,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 34 events. 13/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 77 event pairs, 10 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 67. Up to 33 conditions per place. [2023-11-19 07:43:38,431 INFO L140 encePairwiseOnDemand]: 190/192 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:43:38,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 48 flow [2023-11-19 07:43:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-11-19 07:43:38,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045138888888889 [2023-11-19 07:43:38,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-11-19 07:43:38,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-11-19 07:43:38,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:38,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-11-19 07:43:38,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-11-19 07:43:38,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-11-19 07:43:38,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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) [2023-11-19 07:43:38,441 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 30 flow. Second operand 3 states and 233 transitions. [2023-11-19 07:43:38,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 48 flow [2023-11-19 07:43:38,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:38,442 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 29 flow [2023-11-19 07:43:38,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-11-19 07:43:38,444 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:43:38,444 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 29 flow [2023-11-19 07:43:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-11-19 07:43:38,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:38,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:38,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:38,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash 410106055, now seen corresponding path program 1 times [2023-11-19 07:43:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428150618] [2023-11-19 07:43:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:38,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428150618] [2023-11-19 07:43:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428150618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:38,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555732612] [2023-11-19 07:43:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:38,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 192 [2023-11-19 07:43:38,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-11-19 07:43:38,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:38,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 192 [2023-11-19 07:43:38,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:38,935 INFO L124 PetriNetUnfolderBase]: 21/54 cut-off events. [2023-11-19 07:43:38,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:38,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 54 events. 21/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 153 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 107. Up to 29 conditions per place. [2023-11-19 07:43:38,936 INFO L140 encePairwiseOnDemand]: 188/192 looper letters, 15 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2023-11-19 07:43:38,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 19 transitions, 81 flow [2023-11-19 07:43:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:43:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-11-19 07:43:38,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997395833333333 [2023-11-19 07:43:38,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-11-19 07:43:38,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-11-19 07:43:38,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:38,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-11-19 07:43:38,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-11-19 07:43:38,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2023-11-19 07:43:38,950 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2023-11-19 07:43:38,950 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 29 flow. Second operand 4 states and 307 transitions. [2023-11-19 07:43:38,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 19 transitions, 81 flow [2023-11-19 07:43:38,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:38,953 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 42 flow [2023-11-19 07:43:38,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-11-19 07:43:38,954 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2023-11-19 07:43:38,955 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 42 flow [2023-11-19 07:43:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-11-19 07:43:38,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:38,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:38,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:38,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:38,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 410106062, now seen corresponding path program 1 times [2023-11-19 07:43:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169281227] [2023-11-19 07:43:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:39,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:43:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:39,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:43:39,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:43:39,084 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-19 07:43:39,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-19 07:43:39,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-19 07:43:39,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-19 07:43:39,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-11-19 07:43:39,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-19 07:43:39,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-19 07:43:39,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-19 07:43:39,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-19 07:43:39,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-11-19 07:43:39,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:43:39,091 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:43:39,099 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:43:39,100 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:43:39,125 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-19 07:43:39,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:43:39 BasicIcfg [2023-11-19 07:43:39,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:43:39,140 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:43:39,140 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:43:39,140 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:43:39,141 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32" (3/4) ... [2023-11-19 07:43:39,143 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:43:39,144 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:43:39,148 INFO L158 Benchmark]: Toolchain (without parser) took 7825.82ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 92.7MB in the beginning and 119.4MB in the end (delta: -26.8MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-19 07:43:39,149 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 112.0MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:39,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 815.03ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 110.0MB in the end (delta: -17.6MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2023-11-19 07:43:39,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.71ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 110.0MB in the beginning and 152.2MB in the end (delta: -42.2MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2023-11-19 07:43:39,150 INFO L158 Benchmark]: Boogie Preprocessor took 60.14ms. Allocated memory is still 182.5MB. Free memory was 152.2MB in the beginning and 151.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:43:39,150 INFO L158 Benchmark]: RCFGBuilder took 694.90ms. Allocated memory is still 182.5MB. Free memory was 151.2MB in the beginning and 134.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:43:39,156 INFO L158 Benchmark]: TraceAbstraction took 6151.73ms. Allocated memory is still 182.5MB. Free memory was 133.3MB in the beginning and 119.4MB in the end (delta: 13.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-19 07:43:39,157 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 182.5MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:39,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 112.0MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 815.03ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 110.0MB in the end (delta: -17.6MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.71ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 110.0MB in the beginning and 152.2MB in the end (delta: -42.2MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.14ms. Allocated memory is still 182.5MB. Free memory was 152.2MB in the beginning and 151.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 694.90ms. Allocated memory is still 182.5MB. Free memory was 151.2MB in the beginning and 134.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6151.73ms. Allocated memory is still 182.5MB. Free memory was 133.3MB in the beginning and 119.4MB in the end (delta: 13.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 182.5MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 87 PlacesBefore, 17 PlacesAfterwards, 91 TransitionsBefore, 15 TransitionsAfterwards, 1560 CoEnabledTransitionPairs, 7 FixpointIterations, 27 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 101 TotalNumberOfCompositions, 1590 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1479, independent: 1460, independent conditional: 0, independent unconditional: 1460, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 844, independent: 838, independent conditional: 0, independent unconditional: 838, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1479, independent: 622, independent conditional: 0, independent unconditional: 622, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 844, unknown conditional: 0, unknown unconditional: 844] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of memtrack at line 991. Possible FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1039] 0 pthread_t t; [L1040] 0 next = 0 [L1041] 0 lock = 0 [L1042] 0 len = __VERIFIER_nondet_int() [L1043] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1043] RET 0 assume_abort_if_not(len > 0) [L1044] 0 data = malloc(sizeof(int) * len) [L1045] COND TRUE 0 1 [L1046] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [data={-1:0}, len=1073741824, lock=0, next=0, t={3:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] CALL 1 __VERIFIER_assert(0 <= c && c < len) [L997] COND FALSE 1 !(!(cond)) [L1032] RET 1 __VERIFIER_assert(0 <= c && c < len) [L1033] 1 data[c] = 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: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 18 mSDtfsCounter, 147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2023-11-19 07:43:39,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:41,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:41,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:43:41,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:41,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:41,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:41,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:41,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:41,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:41,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:41,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:41,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:41,749 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:41,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:41,751 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:41,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:41,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:41,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:41,753 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:43:41,753 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:43:41,754 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:43:41,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:41,754 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:43:41,755 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:43:41,755 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:43:41,756 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:41,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:41,756 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:41,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:41,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:41,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:41,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:41,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:41,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:41,760 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:43:41,760 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:43:41,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:41,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:41,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:41,762 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:43:41,762 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:41,762 INFO L153 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_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2023-11-19 07:43:42,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:42,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:42,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:42,222 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:42,222 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:42,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 07:43:45,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:45,953 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:45,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 07:43:45,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data/182a7fbee/ef44d78545884d2289fe4059f01308c0/FLAG9850a4ad4 [2023-11-19 07:43:46,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/data/182a7fbee/ef44d78545884d2289fe4059f01308c0 [2023-11-19 07:43:46,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:46,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:46,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:46,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:46,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:46,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:46,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5831e6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46, skipping insertion in model container [2023-11-19 07:43:46,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:46,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:46,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:46,755 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:46,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:46,943 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:46,943 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:46,973 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:46,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46 WrapperNode [2023-11-19 07:43:46,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:46,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:46,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:46,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:46,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,070 INFO L138 Inliner]: procedures = 278, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-11-19 07:43:47,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:47,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:47,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:47,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:47,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:47,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:47,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:47,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:47,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (1/1) ... [2023-11-19 07:43:47,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:47,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:47,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-19 07:43:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-19 07:43:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:43:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:43:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:43:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:47,239 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:43:47,457 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:47,459 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:47,777 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:47,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:47,856 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:43:47,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:47 BoogieIcfgContainer [2023-11-19 07:43:47,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:47,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:47,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:47,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:47,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:46" (1/3) ... [2023-11-19 07:43:47,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6398b409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:47, skipping insertion in model container [2023-11-19 07:43:47,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:46" (2/3) ... [2023-11-19 07:43:47,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6398b409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:47, skipping insertion in model container [2023-11-19 07:43:47,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:47" (3/3) ... [2023-11-19 07:43:47,876 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-2.i [2023-11-19 07:43:47,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:47,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:43:47,899 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:47,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:48,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:48,077 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-19 07:43:48,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:48,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-19 07:43:48,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:48,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:48,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:48,102 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:48,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 07:43:48,158 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-19 07:43:48,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:48,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-19 07:43:48,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 1560 [2023-11-19 07:43:56,853 INFO L134 LiptonReduction]: Checked pairs total: 1636 [2023-11-19 07:43:56,854 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-11-19 07:43:56,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:56,875 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;@ee5d0f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:56,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:43:56,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:56,879 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:43:56,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:56,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:56,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:43:56,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:56,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:56,886 INFO L85 PathProgramCache]: Analyzing trace with hash 13786, now seen corresponding path program 1 times [2023-11-19 07:43:56,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:43:56,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040289518] [2023-11-19 07:43:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:56,900 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 [2023-11-19 07:43:56,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:43:56,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:43:56,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:57,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:43:57,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:57,138 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:43:57,139 INFO L378 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-19 07:43:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:57,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:57,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:43:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040289518] [2023-11-19 07:43:57,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040289518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:57,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:57,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128130428] [2023-11-19 07:43:57,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:57,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:57,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:43:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:57,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 197 [2023-11-19 07:43:57,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-11-19 07:43:57,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:57,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 197 [2023-11-19 07:43:57,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:57,504 INFO L124 PetriNetUnfolderBase]: 19/47 cut-off events. [2023-11-19 07:43:57,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:57,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 47 events. 19/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 124 event pairs, 15 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 84. Up to 46 conditions per place. [2023-11-19 07:43:57,506 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-11-19 07:43:57,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 50 flow [2023-11-19 07:43:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-19 07:43:57,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993231810490694 [2023-11-19 07:43:57,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-19 07:43:57,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-19 07:43:57,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:57,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-19 07:43:57,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-11-19 07:43:57,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-19 07:43:57,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-19 07:43:57,542 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 3 states and 236 transitions. [2023-11-19 07:43:57,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 50 flow [2023-11-19 07:43:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:57,546 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 30 flow [2023-11-19 07:43:57,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-19 07:43:57,552 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:43:57,552 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 30 flow [2023-11-19 07:43:57,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-11-19 07:43:57,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:57,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:43:57,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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)] Ended with exit code 0 [2023-11-19 07:43:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:57,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 13788, now seen corresponding path program 1 times [2023-11-19 07:43:57,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:43:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903496849] [2023-11-19 07:43:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,758 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 [2023-11-19 07:43:57,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:43:57,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:43:57,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:57,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:43:57,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:57,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:43:57,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:43:57,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:43:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:57,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:57,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:43:57,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903496849] [2023-11-19 07:43:57,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903496849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:57,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:57,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121818076] [2023-11-19 07:43:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:57,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:57,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:43:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:57,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 197 [2023-11-19 07:43:57,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-11-19 07:43:57,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:57,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 197 [2023-11-19 07:43:57,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:57,969 INFO L124 PetriNetUnfolderBase]: 13/34 cut-off events. [2023-11-19 07:43:57,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:57,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 34 events. 13/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 77 event pairs, 10 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 67. Up to 33 conditions per place. [2023-11-19 07:43:57,970 INFO L140 encePairwiseOnDemand]: 195/197 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:43:57,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 48 flow [2023-11-19 07:43:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-19 07:43:57,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993231810490694 [2023-11-19 07:43:57,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-19 07:43:57,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-19 07:43:57,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:57,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-19 07:43:57,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-11-19 07:43:57,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-19 07:43:57,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-19 07:43:57,980 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 30 flow. Second operand 3 states and 236 transitions. [2023-11-19 07:43:57,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 48 flow [2023-11-19 07:43:57,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:57,982 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 29 flow [2023-11-19 07:43:57,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-11-19 07:43:57,983 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:43:57,983 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 29 flow [2023-11-19 07:43:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-11-19 07:43:57,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:57,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:57,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 07:43:58,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:58,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:58,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 411029791, now seen corresponding path program 1 times [2023-11-19 07:43:58,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:43:58,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630155521] [2023-11-19 07:43:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:58,188 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 [2023-11-19 07:43:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:43:58,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:43:58,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:58,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:43:58,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:58,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:58,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:43:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630155521] [2023-11-19 07:43:58,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630155521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129009264] [2023-11-19 07:43:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:58,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:58,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:43:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:58,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 197 [2023-11-19 07:43:58,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-11-19 07:43:58,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:58,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 197 [2023-11-19 07:43:58,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:58,785 INFO L124 PetriNetUnfolderBase]: 21/54 cut-off events. [2023-11-19 07:43:58,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:58,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 54 events. 21/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 156 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 107. Up to 29 conditions per place. [2023-11-19 07:43:58,787 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 15 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2023-11-19 07:43:58,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 19 transitions, 81 flow [2023-11-19 07:43:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:43:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-11-19 07:43:58,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37944162436548223 [2023-11-19 07:43:58,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-11-19 07:43:58,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-11-19 07:43:58,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:58,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-11-19 07:43:58,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-11-19 07:43:58,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-11-19 07:43:58,797 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-11-19 07:43:58,797 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 29 flow. Second operand 4 states and 299 transitions. [2023-11-19 07:43:58,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 19 transitions, 81 flow [2023-11-19 07:43:58,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:58,799 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 42 flow [2023-11-19 07:43:58,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-11-19 07:43:58,800 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2023-11-19 07:43:58,800 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 42 flow [2023-11-19 07:43:58,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-11-19 07:43:58,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:58,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:58,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:59,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:59,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash 411029806, now seen corresponding path program 1 times [2023-11-19 07:43:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:43:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569167426] [2023-11-19 07:43:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:59,006 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 [2023-11-19 07:43:59,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:43:59,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:43:59,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:59,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:59,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:59,105 INFO L378 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 [2023-11-19 07:43:59,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:43:59,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:43:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:59,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:59,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:43:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569167426] [2023-11-19 07:43:59,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569167426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:59,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:59,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:59,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733470891] [2023-11-19 07:43:59,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:59,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:43:59,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:59,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 197 [2023-11-19 07:43:59,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-11-19 07:43:59,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:59,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 197 [2023-11-19 07:43:59,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:59,251 INFO L124 PetriNetUnfolderBase]: 17/44 cut-off events. [2023-11-19 07:43:59,252 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:43:59,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 44 events. 17/44 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 105 event pairs, 14 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 102. Up to 43 conditions per place. [2023-11-19 07:43:59,254 INFO L140 encePairwiseOnDemand]: 195/197 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:43:59,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 60 flow [2023-11-19 07:43:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-19 07:43:59,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027072758037225 [2023-11-19 07:43:59,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-19 07:43:59,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-19 07:43:59,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:59,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-19 07:43:59,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-11-19 07:43:59,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-19 07:43:59,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-19 07:43:59,271 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 42 flow. Second operand 3 states and 238 transitions. [2023-11-19 07:43:59,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 60 flow [2023-11-19 07:43:59,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:59,272 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 38 flow [2023-11-19 07:43:59,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-11-19 07:43:59,273 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2023-11-19 07:43:59,273 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 38 flow [2023-11-19 07:43:59,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-11-19 07:43:59,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:59,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:59,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 07:43:59,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash 411029807, now seen corresponding path program 1 times [2023-11-19 07:43:59,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:43:59,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244507331] [2023-11-19 07:43:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:59,477 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 [2023-11-19 07:43:59,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:43:59,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:43:59,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:59,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:43:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:59,616 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 07:43:59,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:43:59,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-19 07:43:59,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-19 07:43:59,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-19 07:43:59,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-19 07:43:59,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-11-19 07:43:59,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-19 07:43:59,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-19 07:43:59,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-19 07:43:59,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-19 07:43:59,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-11-19 07:43:59,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:43:59,824 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:43:59,829 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:43:59,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:43:59,848 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-19 07:43:59,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:43:59 BasicIcfg [2023-11-19 07:43:59,860 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:43:59,863 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:43:59,863 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:43:59,863 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:43:59,864 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:47" (3/4) ... [2023-11-19 07:43:59,866 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:43:59,867 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:43:59,878 INFO L158 Benchmark]: Toolchain (without parser) took 13860.13ms. Allocated memory was 60.8MB in the beginning and 117.4MB in the end (delta: 56.6MB). Free memory was 35.3MB in the beginning and 66.5MB in the end (delta: -31.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-11-19 07:43:59,880 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 37.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:59,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 965.64ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 35.1MB in the beginning and 55.8MB in the end (delta: -20.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-11-19 07:43:59,882 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.33ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 53.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:43:59,884 INFO L158 Benchmark]: Boogie Preprocessor took 73.22ms. Allocated memory is still 79.7MB. Free memory was 53.2MB in the beginning and 51.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:43:59,884 INFO L158 Benchmark]: RCFGBuilder took 716.76ms. Allocated memory is still 79.7MB. Free memory was 51.4MB in the beginning and 52.0MB in the end (delta: -626.3kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:43:59,887 INFO L158 Benchmark]: TraceAbstraction took 11995.19ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 51.3MB in the beginning and 66.5MB in the end (delta: -15.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-11-19 07:43:59,888 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 117.4MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:59,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 37.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 965.64ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 35.1MB in the beginning and 55.8MB in the end (delta: -20.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.33ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 53.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.22ms. Allocated memory is still 79.7MB. Free memory was 53.2MB in the beginning and 51.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.76ms. Allocated memory is still 79.7MB. Free memory was 51.4MB in the beginning and 52.0MB in the end (delta: -626.3kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11995.19ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 51.3MB in the beginning and 66.5MB in the end (delta: -15.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 117.4MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7s, 87 PlacesBefore, 17 PlacesAfterwards, 91 TransitionsBefore, 15 TransitionsAfterwards, 1560 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 106 TotalNumberOfCompositions, 1636 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1527, independent: 1510, independent conditional: 0, independent unconditional: 1510, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 850, independent: 844, independent conditional: 0, independent unconditional: 844, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1527, independent: 666, independent conditional: 0, independent unconditional: 666, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 850, unknown conditional: 0, unknown unconditional: 850] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of memtrack at line 991. Possible FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1039] 0 pthread_t t; [L1040] 0 next = 0 [L1041] 0 lock = 0 [L1042] 0 len = __VERIFIER_nondet_int() [L1043] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1043] RET 0 assume_abort_if_not(len > 0) [L1044] 0 data = malloc(sizeof(int) * len) [L1045] COND TRUE 0 1 [L1046] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [data={5:0}, len=1073741824, lock=0, next=0, t={13:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] CALL 1 __VERIFIER_assert(0 <= c && c < len) [L997] COND FALSE 1 !(!(cond)) [L1032] RET 1 __VERIFIER_assert(0 <= c && c < len) [L1033] 1 data[c] = 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: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212 IncrementalHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 46 mSDtfsCounter, 212 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 10 ConstructedInterpolants, 1 QuantifiedInterpolants, 100 SizeOfPredicates, 9 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2023-11-19 07:43:59,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b77399-48a5-4bee-8d0b-ff8433f73dff/bin/uautomizer-verify-uCwYo4JHxu/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