./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl --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 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:19:34,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:19:34,506 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:19:34,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:19:34,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:19:34,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:19:34,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:19:34,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:19:34,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:19:34,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:19:34,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:19:34,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:19:34,564 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:19:34,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:19:34,567 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:19:34,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:19:34,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:19:34,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:19:34,569 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:19:34,570 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:19:34,570 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:19:34,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:19:34,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:19:34,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:19:34,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:19:34,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:19:34,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:19:34,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:19:34,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:19:34,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:34,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:19:34,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:19:34,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:19:34,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:19:34,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:19:34,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:19:34,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:19:34,581 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:19:34,581 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_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce [2023-11-12 02:19:34,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:19:34,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:19:34,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:19:34,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:19:34,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:19:34,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-12 02:19:38,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:19:38,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:19:38,420 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-12 02:19:38,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data/3f9f56b24/260f0d48bab0465481b253d8ff1c3b78/FLAG678a70068 [2023-11-12 02:19:38,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data/3f9f56b24/260f0d48bab0465481b253d8ff1c3b78 [2023-11-12 02:19:38,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:19:38,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:19:38,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:38,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:19:38,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:19:38,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:38" (1/1) ... [2023-11-12 02:19:38,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd8a208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:38, skipping insertion in model container [2023-11-12 02:19:38,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:38" (1/1) ... [2023-11-12 02:19:38,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:19:39,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:39,210 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:19:39,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:39,396 WARN L672 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:19:39,404 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:39,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39 WrapperNode [2023-11-12 02:19:39,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:39,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:39,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:39,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:39,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,515 INFO L138 Inliner]: procedures = 354, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-11-12 02:19:39,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:39,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:39,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:39,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:39,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:39,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:39,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:39,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:39,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (1/1) ... [2023-11-12 02:19:39,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:39,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:39,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:39,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:39,682 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-12 02:19:39,684 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-12 02:19:39,684 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-12 02:19:39,684 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-12 02:19:39,685 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-12 02:19:39,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:19:39,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:19:39,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:19:39,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:19:39,685 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:19:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:19:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:39,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:39,688 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:19:39,991 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:39,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:40,248 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:40,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:40,257 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:19:40,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:40 BoogieIcfgContainer [2023-11-12 02:19:40,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:40,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:40,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:40,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:40,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:19:38" (1/3) ... [2023-11-12 02:19:40,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707f65b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:40, skipping insertion in model container [2023-11-12 02:19:40,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:39" (2/3) ... [2023-11-12 02:19:40,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707f65b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:40, skipping insertion in model container [2023-11-12 02:19:40,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:40" (3/3) ... [2023-11-12 02:19:40,271 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-12 02:19:40,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:40,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-12 02:19:40,295 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:19:40,367 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:19:40,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 230 flow [2023-11-12 02:19:40,461 INFO L124 PetriNetUnfolderBase]: 2/106 cut-off events. [2023-11-12 02:19:40,461 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:40,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-12 02:19:40,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 230 flow [2023-11-12 02:19:40,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 100 transitions, 212 flow [2023-11-12 02:19:40,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:40,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 100 transitions, 212 flow [2023-11-12 02:19:40,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 100 transitions, 212 flow [2023-11-12 02:19:40,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 212 flow [2023-11-12 02:19:40,527 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2023-11-12 02:19:40,528 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:40,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 2/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-12 02:19:40,531 INFO L119 LiptonReduction]: Number of co-enabled transitions 1328 [2023-11-12 02:19:46,217 INFO L134 LiptonReduction]: Checked pairs total: 3985 [2023-11-12 02:19:46,218 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-12 02:19:46,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:19:46,259 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;@4f277916, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:19:46,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:19:46,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:19:46,261 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:19:46,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:19:46,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:46,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:19:46,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:46,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 392, now seen corresponding path program 1 times [2023-11-12 02:19:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665164548] [2023-11-12 02:19:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:46,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665164548] [2023-11-12 02:19:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665164548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:46,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:46,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:19:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581710770] [2023-11-12 02:19:46,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:46,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:19:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:19:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:19:46,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 209 [2023-11-12 02:19:46,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2023-11-12 02:19:46,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:46,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 209 [2023-11-12 02:19:46,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:46,814 INFO L124 PetriNetUnfolderBase]: 245/444 cut-off events. [2023-11-12 02:19:46,815 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-12 02:19:46,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 444 events. 245/444 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1727 event pairs, 245 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 800. Up to 441 conditions per place. [2023-11-12 02:19:46,824 INFO L140 encePairwiseOnDemand]: 205/209 looper letters, 25 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-12 02:19:46,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 114 flow [2023-11-12 02:19:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:19:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:19:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 231 transitions. [2023-11-12 02:19:46,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2023-11-12 02:19:46,845 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 231 transitions. [2023-11-12 02:19:46,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 231 transitions. [2023-11-12 02:19:46,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:46,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 231 transitions. [2023-11-12 02:19:46,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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) [2023-11-12 02:19:46,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-11-12 02:19:46,866 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-11-12 02:19:46,868 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 2 states and 231 transitions. [2023-11-12 02:19:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 114 flow [2023-11-12 02:19:46,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:19:46,875 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 56 flow [2023-11-12 02:19:46,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-11-12 02:19:46,882 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-11-12 02:19:46,883 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 56 flow [2023-11-12 02:19:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2023-11-12 02:19:46,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:46,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:19:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:19:46,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash 386084, now seen corresponding path program 1 times [2023-11-12 02:19:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911699509] [2023-11-12 02:19:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:47,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:47,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911699509] [2023-11-12 02:19:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911699509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:19:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494006723] [2023-11-12 02:19:47,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:47,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:47,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:47,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 209 [2023-11-12 02:19:47,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2023-11-12 02:19:47,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:47,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 209 [2023-11-12 02:19:47,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:47,343 INFO L124 PetriNetUnfolderBase]: 235/421 cut-off events. [2023-11-12 02:19:47,343 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:19:47,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 421 events. 235/421 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1618 event pairs, 235 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 846. Up to 417 conditions per place. [2023-11-12 02:19:47,351 INFO L140 encePairwiseOnDemand]: 205/209 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-12 02:19:47,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 98 flow [2023-11-12 02:19:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-11-12 02:19:47,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527910685805425 [2023-11-12 02:19:47,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-11-12 02:19:47,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-11-12 02:19:47,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:47,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-11-12 02:19:47,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2023-11-12 02:19:47,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:47,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:47,370 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 56 flow. Second operand 3 states and 298 transitions. [2023-11-12 02:19:47,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 98 flow [2023-11-12 02:19:47,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:19:47,376 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-11-12 02:19:47,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-12 02:19:47,377 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-11-12 02:19:47,378 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-11-12 02:19:47,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2023-11-12 02:19:47,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:47,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:19:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:19:47,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:47,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:47,391 INFO L85 PathProgramCache]: Analyzing trace with hash 386083, now seen corresponding path program 1 times [2023-11-12 02:19:47,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462969099] [2023-11-12 02:19:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:47,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462969099] [2023-11-12 02:19:47,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462969099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:47,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:47,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:19:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907062963] [2023-11-12 02:19:47,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:47,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 209 [2023-11-12 02:19:47,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-12 02:19:47,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:47,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 209 [2023-11-12 02:19:47,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:47,694 INFO L124 PetriNetUnfolderBase]: 225/398 cut-off events. [2023-11-12 02:19:47,694 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:19:47,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 398 events. 225/398 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1503 event pairs, 225 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 803. Up to 395 conditions per place. [2023-11-12 02:19:47,698 INFO L140 encePairwiseOnDemand]: 205/209 looper letters, 19 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-11-12 02:19:47,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2023-11-12 02:19:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-12 02:19:47,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2023-11-12 02:19:47,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-12 02:19:47,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-12 02:19:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:47,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-12 02:19:47,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:47,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:47,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:47,706 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 308 transitions. [2023-11-12 02:19:47,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2023-11-12 02:19:47,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:47,707 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 52 flow [2023-11-12 02:19:47,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-12 02:19:47,708 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-12 02:19:47,709 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 52 flow [2023-11-12 02:19:47,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-12 02:19:47,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:47,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:19:47,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:19:47,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:47,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash 371035995, now seen corresponding path program 1 times [2023-11-12 02:19:47,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:47,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256494706] [2023-11-12 02:19:47,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256494706] [2023-11-12 02:19:47,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256494706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:47,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:19:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408903542] [2023-11-12 02:19:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:47,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:19:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:19:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:19:47,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-12 02:19:47,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2023-11-12 02:19:47,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-12 02:19:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:48,031 INFO L124 PetriNetUnfolderBase]: 165/302 cut-off events. [2023-11-12 02:19:48,031 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:19:48,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 302 events. 165/302 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1064 event pairs, 165 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 611. Up to 299 conditions per place. [2023-11-12 02:19:48,034 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-12 02:19:48,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 90 flow [2023-11-12 02:19:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-12 02:19:48,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2023-11-12 02:19:48,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-12 02:19:48,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-12 02:19:48,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:48,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-12 02:19:48,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2023-11-12 02:19:48,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,043 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 52 flow. Second operand 3 states and 282 transitions. [2023-11-12 02:19:48,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 90 flow [2023-11-12 02:19:48,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:48,045 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 50 flow [2023-11-12 02:19:48,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-12 02:19:48,046 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -10 predicate places. [2023-11-12 02:19:48,046 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 50 flow [2023-11-12 02:19:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2023-11-12 02:19:48,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:48,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:19:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:19:48,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:48,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash 371035993, now seen corresponding path program 1 times [2023-11-12 02:19:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367246940] [2023-11-12 02:19:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:48,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:48,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367246940] [2023-11-12 02:19:48,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367246940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:48,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:19:48,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282637810] [2023-11-12 02:19:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:19:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:19:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:19:48,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 209 [2023-11-12 02:19:48,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-11-12 02:19:48,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:48,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 209 [2023-11-12 02:19:48,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:48,472 INFO L124 PetriNetUnfolderBase]: 105/206 cut-off events. [2023-11-12 02:19:48,472 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:19:48,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 206 events. 105/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 654 event pairs, 105 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 419. Up to 203 conditions per place. [2023-11-12 02:19:48,474 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 17 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-12 02:19:48,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 86 flow [2023-11-12 02:19:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-11-12 02:19:48,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768740031897927 [2023-11-12 02:19:48,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-11-12 02:19:48,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-11-12 02:19:48,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:48,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-11-12 02:19:48,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 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) [2023-11-12 02:19:48,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,482 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 50 flow. Second operand 3 states and 299 transitions. [2023-11-12 02:19:48,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 86 flow [2023-11-12 02:19:48,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:48,484 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 48 flow [2023-11-12 02:19:48,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-11-12 02:19:48,486 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -11 predicate places. [2023-11-12 02:19:48,487 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 48 flow [2023-11-12 02:19:48,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-11-12 02:19:48,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:48,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:19:48,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:19:48,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:48,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1382785540, now seen corresponding path program 1 times [2023-11-12 02:19:48,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:48,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071734638] [2023-11-12 02:19:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:48,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:48,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071734638] [2023-11-12 02:19:48,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071734638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:19:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472235982] [2023-11-12 02:19:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:48,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:48,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-11-12 02:19:48,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-11-12 02:19:48,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:48,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-11-12 02:19:48,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:48,719 INFO L124 PetriNetUnfolderBase]: 107/226 cut-off events. [2023-11-12 02:19:48,719 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:19:48,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 226 events. 107/226 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 847 event pairs, 67 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 449. Up to 160 conditions per place. [2023-11-12 02:19:48,721 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 23 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-11-12 02:19:48,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 123 flow [2023-11-12 02:19:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-11-12 02:19:48,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103668261562998 [2023-11-12 02:19:48,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-11-12 02:19:48,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-11-12 02:19:48,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:48,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-11-12 02:19:48,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-11-12 02:19:48,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,729 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 48 flow. Second operand 3 states and 320 transitions. [2023-11-12 02:19:48,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 123 flow [2023-11-12 02:19:48,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:48,732 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 78 flow [2023-11-12 02:19:48,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-12 02:19:48,735 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-12 02:19:48,735 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 78 flow [2023-11-12 02:19:48,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-11-12 02:19:48,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:48,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:19:48,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:48,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1351049974, now seen corresponding path program 1 times [2023-11-12 02:19:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017005025] [2023-11-12 02:19:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:48,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017005025] [2023-11-12 02:19:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017005025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:48,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:48,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:48,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875092461] [2023-11-12 02:19:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:48,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2023-11-12 02:19:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-11-12 02:19:48,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:48,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2023-11-12 02:19:48,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:48,956 INFO L124 PetriNetUnfolderBase]: 49/128 cut-off events. [2023-11-12 02:19:48,956 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-12 02:19:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 128 events. 49/128 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 407 event pairs, 14 based on Foata normal form. 22/150 useless extension candidates. Maximal degree in co-relation 312. Up to 87 conditions per place. [2023-11-12 02:19:48,958 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 21 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-12 02:19:48,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 138 flow [2023-11-12 02:19:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-11-12 02:19:48,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944178628389155 [2023-11-12 02:19:48,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-11-12 02:19:48,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-11-12 02:19:48,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:48,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-11-12 02:19:48,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-11-12 02:19:48,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2023-11-12 02:19:48,965 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 78 flow. Second operand 3 states and 310 transitions. [2023-11-12 02:19:48,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 138 flow [2023-11-12 02:19:48,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 128 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:48,968 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 74 flow [2023-11-12 02:19:48,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-12 02:19:48,969 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-12 02:19:48,969 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 74 flow [2023-11-12 02:19:48,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-11-12 02:19:48,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:48,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:19:48,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:19:48,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1654243857, now seen corresponding path program 1 times [2023-11-12 02:19:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447942067] [2023-11-12 02:19:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:19:49,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:19:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:19:49,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:19:49,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:19:49,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-12 02:19:49,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-12 02:19:49,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-12 02:19:49,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-12 02:19:49,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-12 02:19:49,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-12 02:19:49,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-12 02:19:49,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-12 02:19:49,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-12 02:19:49,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-12 02:19:49,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-12 02:19:49,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-12 02:19:49,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-12 02:19:49,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:19:49,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:49,059 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:19:49,059 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:19:49,109 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-12 02:19:49,110 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-12 02:19:49,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:19:49 BasicIcfg [2023-11-12 02:19:49,125 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:19:49,126 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:19:49,126 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:19:49,126 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:19:49,127 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:40" (3/4) ... [2023-11-12 02:19:49,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:19:49,130 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:19:49,131 INFO L158 Benchmark]: Toolchain (without parser) took 10662.74ms. Allocated memory was 140.5MB in the beginning and 207.6MB in the end (delta: 67.1MB). Free memory was 91.2MB in the beginning and 55.9MB in the end (delta: 35.3MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB. [2023-11-12 02:19:49,131 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:19:49,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 935.75ms. Allocated memory was 140.5MB in the beginning and 172.0MB in the end (delta: 31.5MB). Free memory was 90.9MB in the beginning and 131.1MB in the end (delta: -40.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2023-11-12 02:19:49,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.02ms. Allocated memory is still 172.0MB. Free memory was 131.1MB in the beginning and 128.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:19:49,132 INFO L158 Benchmark]: Boogie Preprocessor took 72.26ms. Allocated memory is still 172.0MB. Free memory was 128.1MB in the beginning and 126.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:19:49,133 INFO L158 Benchmark]: RCFGBuilder took 671.42ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 105.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:19:49,133 INFO L158 Benchmark]: TraceAbstraction took 8862.25ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 103.9MB in the beginning and 56.9MB in the end (delta: 46.9MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2023-11-12 02:19:49,134 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 207.6MB. Free memory was 56.9MB in the beginning and 55.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:19:49,138 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 935.75ms. Allocated memory was 140.5MB in the beginning and 172.0MB in the end (delta: 31.5MB). Free memory was 90.9MB in the beginning and 131.1MB in the end (delta: -40.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.02ms. Allocated memory is still 172.0MB. Free memory was 131.1MB in the beginning and 128.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.26ms. Allocated memory is still 172.0MB. Free memory was 128.1MB in the beginning and 126.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 671.42ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 105.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8862.25ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 103.9MB in the beginning and 56.9MB in the end (delta: 46.9MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 207.6MB. Free memory was 56.9MB in the beginning and 55.9MB in the end (delta: 1.0MB). 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~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 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: 5.7s, 105 PlacesBefore, 37 PlacesAfterwards, 100 TransitionsBefore, 32 TransitionsAfterwards, 1328 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 101 TotalNumberOfCompositions, 3985 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1932, independent: 1766, independent conditional: 0, independent unconditional: 1766, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 763, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1932, independent: 1028, independent conditional: 0, independent unconditional: 1028, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 763, unknown conditional: 0, unknown unconditional: 763] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1152, argc=1152, argv={1151:1150}, argv={1151:1150}, cond={4:0}, g=0, mut={3:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1152, argc=1152, argv={1151:1150}, argv={1151:1150}, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1365] CALL 2 __VERIFIER_assert(g == 0) [L19] COND TRUE 2 !(cond) [L19] CALL 2 reach_error() [L18] COND FALSE 2 !(0) [L18] 2 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1377]: 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: 1375]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 143 locations, 13 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: 8.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 402 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 388 IncrementalHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 26 mSDtfsCounter, 388 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=6, InterpolantAutomatonStates: 20, 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, 1.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 [2023-11-12 02:19:49,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl --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 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:19:51,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:19:52,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:19:52,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:19:52,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:19:52,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:19:52,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:19:52,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:19:52,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:19:52,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:19:52,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:19:52,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:19:52,079 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:19:52,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:19:52,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:19:52,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:19:52,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:19:52,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:19:52,083 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:19:52,083 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:19:52,084 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:19:52,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:19:52,085 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:19:52,086 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:19:52,086 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:19:52,087 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:19:52,087 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:19:52,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:19:52,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:19:52,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:19:52,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:19:52,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:52,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:19:52,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:19:52,091 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:19:52,092 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:19:52,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:19:52,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:19:52,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:19:52,093 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:19:52,093 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:19:52,093 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_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce [2023-11-12 02:19:52,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:19:52,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:19:52,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:19:52,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:19:52,526 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:19:52,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-12 02:19:55,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:19:56,264 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:19:56,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-12 02:19:56,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data/201110ab0/b39641b9451e4ba99ddb14fe6135643b/FLAGad5277171 [2023-11-12 02:19:56,321 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/data/201110ab0/b39641b9451e4ba99ddb14fe6135643b [2023-11-12 02:19:56,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:19:56,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:19:56,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:56,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:19:56,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:19:56,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:56" (1/1) ... [2023-11-12 02:19:56,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393feb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:56, skipping insertion in model container [2023-11-12 02:19:56,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:56" (1/1) ... [2023-11-12 02:19:56,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:19:57,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:57,301 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:19:57,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:57,538 WARN L672 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:19:57,546 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:57,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57 WrapperNode [2023-11-12 02:19:57,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:57,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:57,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:57,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:57,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,656 INFO L138 Inliner]: procedures = 358, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2023-11-12 02:19:57,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:57,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:57,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:57,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:57,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:57,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:57,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:57,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:57,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (1/1) ... [2023-11-12 02:19:57,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:57,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:57,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:57,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:19:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-12 02:19:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-12 02:19:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-12 02:19:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-12 02:19:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-12 02:19:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:19:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:19:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:19:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:19:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-12 02:19:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:19:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:57,871 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:19:58,265 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:58,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:58,595 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:58,608 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:58,608 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:19:58,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:58 BoogieIcfgContainer [2023-11-12 02:19:58,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:58,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:58,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:58,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:58,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:19:56" (1/3) ... [2023-11-12 02:19:58,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8609c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:58, skipping insertion in model container [2023-11-12 02:19:58,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:57" (2/3) ... [2023-11-12 02:19:58,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8609c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:58, skipping insertion in model container [2023-11-12 02:19:58,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:58" (3/3) ... [2023-11-12 02:19:58,626 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-12 02:19:58,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:58,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-12 02:19:58,648 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:19:58,753 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:19:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 109 transitions, 232 flow [2023-11-12 02:19:58,842 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-11-12 02:19:58,842 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:58,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 2/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-12 02:19:58,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 109 transitions, 232 flow [2023-11-12 02:19:58,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 101 transitions, 214 flow [2023-11-12 02:19:58,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:58,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 101 transitions, 214 flow [2023-11-12 02:19:58,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 101 transitions, 214 flow [2023-11-12 02:19:58,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 214 flow [2023-11-12 02:19:58,897 INFO L124 PetriNetUnfolderBase]: 2/101 cut-off events. [2023-11-12 02:19:58,897 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:58,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 2/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-12 02:19:58,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 1328 [2023-11-12 02:20:11,984 INFO L134 LiptonReduction]: Checked pairs total: 3604 [2023-11-12 02:20:11,984 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-11-12 02:20:12,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:12,007 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;@12a489a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:12,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:20:12,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:20:12,009 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:20:12,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:12,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:12,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:20:12,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:12,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash 396, now seen corresponding path program 1 times [2023-11-12 02:20:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905733494] [2023-11-12 02:20:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:12,033 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 [2023-11-12 02:20:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:12,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:12,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:20:12,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:12,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:12,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905733494] [2023-11-12 02:20:12,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905733494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:12,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:12,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:20:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830975562] [2023-11-12 02:20:12,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:20:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:20:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:20:12,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 212 [2023-11-12 02:20:12,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 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) [2023-11-12 02:20:12,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:12,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 212 [2023-11-12 02:20:12,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:12,402 INFO L124 PetriNetUnfolderBase]: 287/515 cut-off events. [2023-11-12 02:20:12,403 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-12 02:20:12,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 515 events. 287/515 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2069 event pairs, 287 based on Foata normal form. 28/373 useless extension candidates. Maximal degree in co-relation 925. Up to 511 conditions per place. [2023-11-12 02:20:12,410 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 26 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-11-12 02:20:12,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 118 flow [2023-11-12 02:20:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:20:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:20:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions. [2023-11-12 02:20:12,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518867924528302 [2023-11-12 02:20:12,427 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 234 transitions. [2023-11-12 02:20:12,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions. [2023-11-12 02:20:12,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:12,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions. [2023-11-12 02:20:12,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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) [2023-11-12 02:20:12,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-11-12 02:20:12,441 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-11-12 02:20:12,443 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 2 states and 234 transitions. [2023-11-12 02:20:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 118 flow [2023-11-12 02:20:12,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:20:12,450 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 58 flow [2023-11-12 02:20:12,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-11-12 02:20:12,456 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2023-11-12 02:20:12,457 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 58 flow [2023-11-12 02:20:12,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 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) [2023-11-12 02:20:12,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:12,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:20:12,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:12,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:12,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 390952, now seen corresponding path program 1 times [2023-11-12 02:20:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:12,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958485549] [2023-11-12 02:20:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:12,675 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 [2023-11-12 02:20:12,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:12,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:12,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:12,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:12,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:13,011 INFO L351 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 [2023-11-12 02:20:13,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:20:13,030 INFO L351 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 6 treesize of output 1 [2023-11-12 02:20:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:13,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:13,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958485549] [2023-11-12 02:20:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958485549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:13,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686605287] [2023-11-12 02:20:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:13,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:13,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:13,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 212 [2023-11-12 02:20:13,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:13,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:13,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 212 [2023-11-12 02:20:13,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:13,349 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2023-11-12 02:20:13,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:13,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 490 events. 276/490 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1964 event pairs, 276 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 983. Up to 485 conditions per place. [2023-11-12 02:20:13,360 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-12 02:20:13,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 102 flow [2023-11-12 02:20:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-11-12 02:20:13,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2023-11-12 02:20:13,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-11-12 02:20:13,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-11-12 02:20:13,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:13,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-11-12 02:20:13,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2023-11-12 02:20:13,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:13,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:13,388 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 58 flow. Second operand 3 states and 314 transitions. [2023-11-12 02:20:13,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 102 flow [2023-11-12 02:20:13,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:13,390 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2023-11-12 02:20:13,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-11-12 02:20:13,392 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2023-11-12 02:20:13,392 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2023-11-12 02:20:13,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:13,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:13,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:20:13,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:13,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:13,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 390950, now seen corresponding path program 1 times [2023-11-12 02:20:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:13,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588860778] [2023-11-12 02:20:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:13,609 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 [2023-11-12 02:20:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:13,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:13,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:13,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:20:13,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:13,825 INFO L351 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 [2023-11-12 02:20:13,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:20:13,838 INFO L351 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 [2023-11-12 02:20:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:13,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:13,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588860778] [2023-11-12 02:20:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588860778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805275431] [2023-11-12 02:20:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:13,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:13,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 212 [2023-11-12 02:20:13,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-11-12 02:20:13,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:13,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 212 [2023-11-12 02:20:13,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:14,098 INFO L124 PetriNetUnfolderBase]: 265/465 cut-off events. [2023-11-12 02:20:14,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:14,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 465 events. 265/465 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1845 event pairs, 265 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 936. Up to 461 conditions per place. [2023-11-12 02:20:14,103 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-11-12 02:20:14,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 98 flow [2023-11-12 02:20:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-11-12 02:20:14,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2023-11-12 02:20:14,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-11-12 02:20:14,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-11-12 02:20:14,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:14,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-11-12 02:20:14,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2023-11-12 02:20:14,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:14,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:14,114 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 300 transitions. [2023-11-12 02:20:14,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 98 flow [2023-11-12 02:20:14,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:14,116 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 54 flow [2023-11-12 02:20:14,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-12 02:20:14,118 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -8 predicate places. [2023-11-12 02:20:14,118 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 54 flow [2023-11-12 02:20:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-11-12 02:20:14,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:14,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:20:14,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:14,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:14,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:14,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash 375712285, now seen corresponding path program 1 times [2023-11-12 02:20:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:14,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433827270] [2023-11-12 02:20:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:14,334 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 [2023-11-12 02:20:14,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:14,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:14,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:14,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:20:14,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:14,567 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:20:14,568 INFO L351 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 11 [2023-11-12 02:20:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:14,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:14,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:14,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433827270] [2023-11-12 02:20:14,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433827270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:14,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053118343] [2023-11-12 02:20:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:14,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:15,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 212 [2023-11-12 02:20:15,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 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) [2023-11-12 02:20:15,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:15,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 212 [2023-11-12 02:20:15,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:15,204 INFO L124 PetriNetUnfolderBase]: 194/352 cut-off events. [2023-11-12 02:20:15,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:15,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 352 events. 194/352 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1312 event pairs, 194 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 710. Up to 348 conditions per place. [2023-11-12 02:20:15,208 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 19 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-11-12 02:20:15,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2023-11-12 02:20:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-11-12 02:20:15,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742138364779874 [2023-11-12 02:20:15,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-11-12 02:20:15,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-11-12 02:20:15,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:15,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-11-12 02:20:15,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-11-12 02:20:15,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:15,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:15,216 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 54 flow. Second operand 3 states and 310 transitions. [2023-11-12 02:20:15,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2023-11-12 02:20:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:15,218 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 52 flow [2023-11-12 02:20:15,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-12 02:20:15,219 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-12 02:20:15,219 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 52 flow [2023-11-12 02:20:15,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 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) [2023-11-12 02:20:15,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:15,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:20:15,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:15,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:15,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:15,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash 375712284, now seen corresponding path program 1 times [2023-11-12 02:20:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:15,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727585418] [2023-11-12 02:20:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:15,436 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 [2023-11-12 02:20:15,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:15,438 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:15,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:15,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:15,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:15,625 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:20:15,625 INFO L351 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 [2023-11-12 02:20:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:15,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:15,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727585418] [2023-11-12 02:20:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727585418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:15,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947314457] [2023-11-12 02:20:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:15,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:15,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:16,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 212 [2023-11-12 02:20:16,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2023-11-12 02:20:16,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:16,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 212 [2023-11-12 02:20:16,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:16,288 INFO L124 PetriNetUnfolderBase]: 123/239 cut-off events. [2023-11-12 02:20:16,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:16,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 239 events. 123/239 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 816 event pairs, 123 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 484. Up to 235 conditions per place. [2023-11-12 02:20:16,290 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 17 selfloop transitions, 2 changer transitions 1/21 dead transitions. [2023-11-12 02:20:16,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 90 flow [2023-11-12 02:20:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-11-12 02:20:16,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669811320754717 [2023-11-12 02:20:16,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-11-12 02:20:16,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-11-12 02:20:16,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:16,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-11-12 02:20:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-11-12 02:20:16,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:16,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:16,298 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 52 flow. Second operand 3 states and 297 transitions. [2023-11-12 02:20:16,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 90 flow [2023-11-12 02:20:16,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:16,299 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-11-12 02:20:16,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-12 02:20:16,300 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -10 predicate places. [2023-11-12 02:20:16,301 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-11-12 02:20:16,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2023-11-12 02:20:16,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:16,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:20:16,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:16,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:16,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1237820542, now seen corresponding path program 1 times [2023-11-12 02:20:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733080353] [2023-11-12 02:20:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:16,519 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 [2023-11-12 02:20:16,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:16,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:16,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 02:20:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:16,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:16,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:16,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:16,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:16,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733080353] [2023-11-12 02:20:16,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733080353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:16,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:16,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720832814] [2023-11-12 02:20:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:16,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:16,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 212 [2023-11-12 02:20:16,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2023-11-12 02:20:16,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:16,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 212 [2023-11-12 02:20:16,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:16,804 INFO L124 PetriNetUnfolderBase]: 101/216 cut-off events. [2023-11-12 02:20:16,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 216 events. 101/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 798 event pairs, 65 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 429. Up to 146 conditions per place. [2023-11-12 02:20:16,807 INFO L140 encePairwiseOnDemand]: 207/212 looper letters, 24 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-12 02:20:16,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 123 flow [2023-11-12 02:20:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-12 02:20:16,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078616352201258 [2023-11-12 02:20:16,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-12 02:20:16,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-12 02:20:16,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:16,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-12 02:20:16,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2023-11-12 02:20:16,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:16,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:16,815 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 323 transitions. [2023-11-12 02:20:16,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 123 flow [2023-11-12 02:20:16,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:16,817 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 70 flow [2023-11-12 02:20:16,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-12 02:20:16,818 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-12 02:20:16,819 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 70 flow [2023-11-12 02:20:16,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2023-11-12 02:20:16,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:16,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:16,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:17,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:17,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:17,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 202945568, now seen corresponding path program 1 times [2023-11-12 02:20:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566742622] [2023-11-12 02:20:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:17,035 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 [2023-11-12 02:20:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:17,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:17,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 02:20:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:17,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:17,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:17,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-12 02:20:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:17,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:17,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:20:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566742622] [2023-11-12 02:20:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566742622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:17,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:17,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:20:17,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064992676] [2023-11-12 02:20:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:20:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:17,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-11-12 02:20:17,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 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) [2023-11-12 02:20:17,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:17,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-11-12 02:20:17,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:17,335 INFO L124 PetriNetUnfolderBase]: 49/128 cut-off events. [2023-11-12 02:20:17,336 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-12 02:20:17,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 128 events. 49/128 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 412 event pairs, 14 based on Foata normal form. 22/150 useless extension candidates. Maximal degree in co-relation 304. Up to 87 conditions per place. [2023-11-12 02:20:17,337 INFO L140 encePairwiseOnDemand]: 206/212 looper letters, 21 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-12 02:20:17,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 136 flow [2023-11-12 02:20:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-11-12 02:20:17,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921383647798742 [2023-11-12 02:20:17,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-11-12 02:20:17,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-11-12 02:20:17,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:17,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-11-12 02:20:17,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-11-12 02:20:17,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:17,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-12 02:20:17,357 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 70 flow. Second operand 3 states and 313 transitions. [2023-11-12 02:20:17,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 136 flow [2023-11-12 02:20:17,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:17,360 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 74 flow [2023-11-12 02:20:17,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-12 02:20:17,360 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-12 02:20:17,361 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 74 flow [2023-11-12 02:20:17,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 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) [2023-11-12 02:20:17,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:17,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:17,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:17,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:17,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:20:17,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2030565731, now seen corresponding path program 1 times [2023-11-12 02:20:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:20:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302976957] [2023-11-12 02:20:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:17,572 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 [2023-11-12 02:20:17,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:20:17,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:20:17,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 02:20:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:17,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:17,871 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-12 02:20:17,872 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:20:17,873 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-12 02:20:17,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-12 02:20:17,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-12 02:20:17,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-12 02:20:17,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-12 02:20:17,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-12 02:20:17,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-12 02:20:17,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-12 02:20:17,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-12 02:20:17,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-12 02:20:17,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-12 02:20:17,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-12 02:20:17,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-12 02:20:17,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:20:18,077 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:18,082 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:20:18,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:20:18,103 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-12 02:20:18,105 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-12 02:20:18,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:20:18 BasicIcfg [2023-11-12 02:20:18,111 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:20:18,112 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:20:18,112 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:20:18,112 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:20:18,112 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:58" (3/4) ... [2023-11-12 02:20:18,114 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:20:18,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:20:18,116 INFO L158 Benchmark]: Toolchain (without parser) took 21789.53ms. Allocated memory was 69.2MB in the beginning and 134.2MB in the end (delta: 65.0MB). Free memory was 34.7MB in the beginning and 85.1MB in the end (delta: -50.4MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-12 02:20:18,117 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 113.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:18,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1219.58ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 34.5MB in the beginning and 50.5MB in the end (delta: -16.0MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-11-12 02:20:18,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.16ms. Allocated memory is still 92.3MB. Free memory was 50.5MB in the beginning and 47.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:20:18,118 INFO L158 Benchmark]: Boogie Preprocessor took 94.81ms. Allocated memory is still 92.3MB. Free memory was 47.3MB in the beginning and 44.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:18,119 INFO L158 Benchmark]: RCFGBuilder took 858.46ms. Allocated memory is still 92.3MB. Free memory was 44.3MB in the beginning and 42.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:20:18,119 INFO L158 Benchmark]: TraceAbstraction took 19494.59ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 41.7MB in the beginning and 85.1MB in the end (delta: -43.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:18,120 INFO L158 Benchmark]: Witness Printer took 4.15ms. Allocated memory is still 134.2MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:18,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 113.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1219.58ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 34.5MB in the beginning and 50.5MB in the end (delta: -16.0MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.16ms. Allocated memory is still 92.3MB. Free memory was 50.5MB in the beginning and 47.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.81ms. Allocated memory is still 92.3MB. Free memory was 47.3MB in the beginning and 44.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 858.46ms. Allocated memory is still 92.3MB. Free memory was 44.3MB in the beginning and 42.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 19494.59ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 41.7MB in the beginning and 85.1MB in the end (delta: -43.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.15ms. Allocated memory is still 134.2MB. Free memory is still 85.1MB. 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~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 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: 13.1s, 106 PlacesBefore, 37 PlacesAfterwards, 101 TransitionsBefore, 32 TransitionsAfterwards, 1328 CoEnabledTransitionPairs, 6 FixpointIterations, 51 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 103 TotalNumberOfCompositions, 3604 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1727, independent: 1583, independent conditional: 0, independent unconditional: 1583, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 742, independent: 719, independent conditional: 0, independent unconditional: 719, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1727, independent: 864, independent conditional: 0, independent unconditional: 864, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 742, unknown conditional: 0, unknown unconditional: 742] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=200, argc=200, argv={202:201}, argv={202:201}, cond={4:0}, g=0, mut={3:0}, ptr={0:0}, t1={5:0}, t2={7:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=200, argc=200, argv={202:201}, argv={202:201}, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}, t1={5:0}, t2={7:0}] [L1365] CALL 2 __VERIFIER_assert(g == 0) [L19] COND TRUE 2 !(cond) [L19] CALL 2 reach_error() [L18] COND FALSE 2 !(0) [L18] 2 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1377]: 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: 1375]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 144 locations, 13 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: 19.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 346 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 363 IncrementalHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 35 mSDtfsCounter, 363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 20, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 24 ConstructedInterpolants, 8 QuantifiedInterpolants, 194 SizeOfPredicates, 4 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 [2023-11-12 02:20:18,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0d818e-ad65-4d66-bc9e-de7af70958bb/bin/uautomizer-verify-uTZkv6EMXl/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