./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:37,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:37,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:47:37,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:37,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:37,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:37,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:37,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:37,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:37,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:37,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:37,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:37,964 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:37,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:37,965 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:37,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:37,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:37,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:37,967 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:47:37,968 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:47:37,968 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:47:37,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:37,976 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:37,976 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:37,977 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:37,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:37,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:37,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:37,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:37,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:37,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:37,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:37,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:37,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:37,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:37,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:37,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:37,985 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:37,985 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_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 [2023-11-19 07:47:38,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:38,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:38,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:38,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:38,411 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:38,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-19 07:47:41,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:42,364 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:42,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-19 07:47:42,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data/52ae6e267/f7506f6d2da343b49b7d5cbb9c75a48c/FLAGf236ce502 [2023-11-19 07:47:42,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data/52ae6e267/f7506f6d2da343b49b7d5cbb9c75a48c [2023-11-19 07:47:42,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:42,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:42,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:42,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:42,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:42,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:42" (1/1) ... [2023-11-19 07:47:42,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274e5a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:42, skipping insertion in model container [2023-11-19 07:47:42,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:42" (1/1) ... [2023-11-19 07:47:42,504 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:43,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:43,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:43,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:43,297 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:43,304 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:43,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43 WrapperNode [2023-11-19 07:47:43,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:43,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:43,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:43,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:43,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,384 INFO L138 Inliner]: procedures = 354, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-19 07:47:43,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:43,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:43,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:43,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:43,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:43,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:43,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:43,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:43,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2023-11-19 07:47:43,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:43,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:43,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:43,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-19 07:47:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-19 07:47:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-19 07:47:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-19 07:47:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-19 07:47:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:47:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:43,542 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:47:43,884 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:43,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:44,160 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:44,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:44,172 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:47:44,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:44 BoogieIcfgContainer [2023-11-19 07:47:44,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:44,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:44,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:44,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:44,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:42" (1/3) ... [2023-11-19 07:47:44,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7a9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:44, skipping insertion in model container [2023-11-19 07:47:44,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (2/3) ... [2023-11-19 07:47:44,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7a9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:44, skipping insertion in model container [2023-11-19 07:47:44,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:44" (3/3) ... [2023-11-19 07:47:44,187 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_true.i [2023-11-19 07:47:44,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:44,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:47:44,206 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:44,296 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:47:44,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 230 flow [2023-11-19 07:47:44,408 INFO L124 PetriNetUnfolderBase]: 2/106 cut-off events. [2023-11-19 07:47:44,408 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:47:44,414 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 6. Compared 107 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-19 07:47:44,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 230 flow [2023-11-19 07:47:44,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 100 transitions, 212 flow [2023-11-19 07:47:44,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:44,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 100 transitions, 212 flow [2023-11-19 07:47:44,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 100 transitions, 212 flow [2023-11-19 07:47:44,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 212 flow [2023-11-19 07:47:44,477 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2023-11-19 07:47:44,477 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:47:44,478 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 6. Compared 106 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-19 07:47:44,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 1328 [2023-11-19 07:47:50,715 INFO L134 LiptonReduction]: Checked pairs total: 3401 [2023-11-19 07:47:50,716 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-11-19 07:47:50,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:50,743 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;@4643dd3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:50,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:47:50,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:50,745 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:47:50,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:50,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:50,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:47:50,748 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)] === [2023-11-19 07:47:50,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash 399, now seen corresponding path program 1 times [2023-11-19 07:47:50,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755375420] [2023-11-19 07:47:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755375420] [2023-11-19 07:47:51,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755375420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:51,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:51,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:47:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096870047] [2023-11-19 07:47:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:51,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:51,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 215 [2023-11-19 07:47:51,098 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) [2023-11-19 07:47:51,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:51,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 215 [2023-11-19 07:47:51,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:51,315 INFO L124 PetriNetUnfolderBase]: 161/325 cut-off events. [2023-11-19 07:47:51,315 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:47:51,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 325 events. 161/325 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1336 event pairs, 161 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 597. Up to 305 conditions per place. [2023-11-19 07:47:51,327 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 24 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-19 07:47:51,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 112 flow [2023-11-19 07:47:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:47:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 230 transitions. [2023-11-19 07:47:51,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2023-11-19 07:47:51,354 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 230 transitions. [2023-11-19 07:47:51,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 230 transitions. [2023-11-19 07:47:51,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:51,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 230 transitions. [2023-11-19 07:47:51,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,379 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,382 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 2 states and 230 transitions. [2023-11-19 07:47:51,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 112 flow [2023-11-19 07:47:51,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:47:51,391 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 56 flow [2023-11-19 07:47:51,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, 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} [2023-11-19 07:47:51,400 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-11-19 07:47:51,400 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 56 flow [2023-11-19 07:47:51,401 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) [2023-11-19 07:47:51,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:51,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:47:51,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:51,402 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)] === [2023-11-19 07:47:51,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash 392805, now seen corresponding path program 1 times [2023-11-19 07:47:51,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:51,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148315512] [2023-11-19 07:47:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:51,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:51,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148315512] [2023-11-19 07:47:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148315512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:51,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:51,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:51,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030633616] [2023-11-19 07:47:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:51,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:51,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 215 [2023-11-19 07:47:51,915 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) [2023-11-19 07:47:51,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:51,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 215 [2023-11-19 07:47:51,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:52,041 INFO L124 PetriNetUnfolderBase]: 152/304 cut-off events. [2023-11-19 07:47:52,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:52,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 304 events. 152/304 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1228 event pairs, 152 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 597. Up to 283 conditions per place. [2023-11-19 07:47:52,046 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 20 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-19 07:47:52,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 96 flow [2023-11-19 07:47:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-11-19 07:47:52,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2023-11-19 07:47:52,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-11-19 07:47:52,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-11-19 07:47:52,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:52,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-11-19 07:47:52,056 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) [2023-11-19 07:47:52,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,061 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 56 flow. Second operand 3 states and 297 transitions. [2023-11-19 07:47:52,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 96 flow [2023-11-19 07:47:52,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:52,064 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-11-19 07:47:52,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, 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} [2023-11-19 07:47:52,066 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-11-19 07:47:52,066 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-11-19 07:47:52,067 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) [2023-11-19 07:47:52,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:52,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:47:52,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:52,068 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)] === [2023-11-19 07:47:52,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash 392807, now seen corresponding path program 1 times [2023-11-19 07:47:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664513959] [2023-11-19 07:47:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664513959] [2023-11-19 07:47:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664513959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:52,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442535177] [2023-11-19 07:47:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:52,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:52,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:52,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 215 [2023-11-19 07:47:52,359 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) [2023-11-19 07:47:52,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:52,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 215 [2023-11-19 07:47:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:52,448 INFO L124 PetriNetUnfolderBase]: 143/283 cut-off events. [2023-11-19 07:47:52,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:52,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 283 events. 143/283 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1128 event pairs, 143 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 558. Up to 263 conditions per place. [2023-11-19 07:47:52,453 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 18 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-11-19 07:47:52,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 92 flow [2023-11-19 07:47:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-11-19 07:47:52,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475968992248062 [2023-11-19 07:47:52,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-11-19 07:47:52,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-11-19 07:47:52,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:52,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-11-19 07:47:52,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,464 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 307 transitions. [2023-11-19 07:47:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 92 flow [2023-11-19 07:47:52,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:52,466 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 52 flow [2023-11-19 07:47:52,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, 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} [2023-11-19 07:47:52,468 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-19 07:47:52,468 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 52 flow [2023-11-19 07:47:52,469 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) [2023-11-19 07:47:52,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:52,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:52,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:52,470 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)] === [2023-11-19 07:47:52,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 377494875, now seen corresponding path program 1 times [2023-11-19 07:47:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974623978] [2023-11-19 07:47:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:52,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:52,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974623978] [2023-11-19 07:47:52,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974623978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:52,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:52,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148093435] [2023-11-19 07:47:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 215 [2023-11-19 07:47:52,851 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) [2023-11-19 07:47:52,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:52,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 215 [2023-11-19 07:47:52,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:52,928 INFO L124 PetriNetUnfolderBase]: 106/218 cut-off events. [2023-11-19 07:47:52,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:52,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 218 events. 106/218 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 795 event pairs, 106 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 432. Up to 202 conditions per place. [2023-11-19 07:47:52,932 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 17 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 07:47:52,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 88 flow [2023-11-19 07:47:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-11-19 07:47:52,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356589147286822 [2023-11-19 07:47:52,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-11-19 07:47:52,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-11-19 07:47:52,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:52,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-11-19 07:47:52,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-19 07:47:52,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,943 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 52 flow. Second operand 3 states and 281 transitions. [2023-11-19 07:47:52,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 88 flow [2023-11-19 07:47:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:52,945 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 50 flow [2023-11-19 07:47:52,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, 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} [2023-11-19 07:47:52,948 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -10 predicate places. [2023-11-19 07:47:52,949 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 50 flow [2023-11-19 07:47:52,949 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) [2023-11-19 07:47:52,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:52,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:52,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:52,950 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)] === [2023-11-19 07:47:52,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 377494874, now seen corresponding path program 1 times [2023-11-19 07:47:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328225226] [2023-11-19 07:47:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:53,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328225226] [2023-11-19 07:47:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328225226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:53,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174883939] [2023-11-19 07:47:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:53,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 215 [2023-11-19 07:47:53,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 50 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) [2023-11-19 07:47:53,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:53,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 215 [2023-11-19 07:47:53,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:53,242 INFO L124 PetriNetUnfolderBase]: 69/153 cut-off events. [2023-11-19 07:47:53,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:53,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 153 events. 69/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 497 event pairs, 69 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 306. Up to 141 conditions per place. [2023-11-19 07:47:53,247 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 16 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-19 07:47:53,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 84 flow [2023-11-19 07:47:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-11-19 07:47:53,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2023-11-19 07:47:53,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-11-19 07:47:53,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-11-19 07:47:53,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:53,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-11-19 07:47:53,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,256 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 50 flow. Second operand 3 states and 295 transitions. [2023-11-19 07:47:53,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 84 flow [2023-11-19 07:47:53,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:53,258 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 48 flow [2023-11-19 07:47:53,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, 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} [2023-11-19 07:47:53,259 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -11 predicate places. [2023-11-19 07:47:53,259 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 48 flow [2023-11-19 07:47:53,260 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) [2023-11-19 07:47:53,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:53,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:53,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:47:53,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1959560578, now seen corresponding path program 1 times [2023-11-19 07:47:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185642267] [2023-11-19 07:47:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185642267] [2023-11-19 07:47:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185642267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:53,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:53,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725207425] [2023-11-19 07:47:53,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:53,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 215 [2023-11-19 07:47:53,414 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) [2023-11-19 07:47:53,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:53,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 215 [2023-11-19 07:47:53,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:53,499 INFO L124 PetriNetUnfolderBase]: 97/204 cut-off events. [2023-11-19 07:47:53,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:53,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 204 events. 97/204 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 701 event pairs, 55 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 408. Up to 131 conditions per place. [2023-11-19 07:47:53,502 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 24 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-19 07:47:53,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 123 flow [2023-11-19 07:47:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-11-19 07:47:53,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2023-11-19 07:47:53,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-11-19 07:47:53,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-11-19 07:47:53,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:53,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-11-19 07:47:53,507 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) [2023-11-19 07:47:53,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,510 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 48 flow. Second operand 3 states and 320 transitions. [2023-11-19 07:47:53,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 123 flow [2023-11-19 07:47:53,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:53,513 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 74 flow [2023-11-19 07:47:53,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-19 07:47:53,516 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-19 07:47:53,516 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 74 flow [2023-11-19 07:47:53,517 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) [2023-11-19 07:47:53,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:53,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:53,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:47:53,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -790337512, now seen corresponding path program 1 times [2023-11-19 07:47:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600424362] [2023-11-19 07:47:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:53,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600424362] [2023-11-19 07:47:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600424362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:53,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912183012] [2023-11-19 07:47:53,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:53,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:53,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 215 [2023-11-19 07:47:53,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:53,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 215 [2023-11-19 07:47:53,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:53,818 INFO L124 PetriNetUnfolderBase]: 43/120 cut-off events. [2023-11-19 07:47:53,819 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-19 07:47:53,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 120 events. 43/120 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 363 event pairs, 14 based on Foata normal form. 14/134 useless extension candidates. Maximal degree in co-relation 287. Up to 71 conditions per place. [2023-11-19 07:47:53,820 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 19 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-19 07:47:53,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 132 flow [2023-11-19 07:47:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-19 07:47:53,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2023-11-19 07:47:53,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-19 07:47:53,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-19 07:47:53,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:53,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-19 07:47:53,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,829 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 74 flow. Second operand 3 states and 309 transitions. [2023-11-19 07:47:53,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 132 flow [2023-11-19 07:47:53,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:53,832 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 74 flow [2023-11-19 07:47:53,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, 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} [2023-11-19 07:47:53,834 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-19 07:47:53,834 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 74 flow [2023-11-19 07:47:53,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:53,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:53,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:47:53,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 288901118, now seen corresponding path program 1 times [2023-11-19 07:47:53,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313492544] [2023-11-19 07:47:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:53,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:47:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:53,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:47:53,934 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:47:53,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-19 07:47:53,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-19 07:47:53,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-19 07:47:53,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-19 07:47:53,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-19 07:47:53,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-19 07:47:53,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-19 07:47:53,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-19 07:47:53,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-19 07:47:53,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-19 07:47:53,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-19 07:47:53,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-19 07:47:53,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-19 07:47:53,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:47:53,941 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,948 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:47:53,948 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:47:54,001 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 07:47:54,004 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:47:54,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:54 BasicIcfg [2023-11-19 07:47:54,019 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:47:54,020 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:47:54,020 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:47:54,020 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:47:54,021 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:44" (3/4) ... [2023-11-19 07:47:54,022 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:47:54,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:47:54,025 INFO L158 Benchmark]: Toolchain (without parser) took 11608.49ms. Allocated memory was 142.6MB in the beginning and 237.0MB in the end (delta: 94.4MB). Free memory was 95.4MB in the beginning and 89.0MB in the end (delta: 6.4MB). Peak memory consumption was 101.2MB. Max. memory is 16.1GB. [2023-11-19 07:47:54,025 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 142.6MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:54,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 885.05ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 94.9MB in the beginning and 158.6MB in the end (delta: -63.7MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2023-11-19 07:47:54,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.66ms. Allocated memory is still 197.1MB. Free memory was 158.6MB in the beginning and 155.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:47:54,029 INFO L158 Benchmark]: Boogie Preprocessor took 51.46ms. Allocated memory is still 197.1MB. Free memory was 155.4MB in the beginning and 153.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:54,029 INFO L158 Benchmark]: RCFGBuilder took 739.76ms. Allocated memory is still 197.1MB. Free memory was 153.3MB in the beginning and 132.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:47:54,030 INFO L158 Benchmark]: TraceAbstraction took 9839.24ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 131.3MB in the beginning and 90.0MB in the end (delta: 41.3MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. [2023-11-19 07:47:54,030 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 237.0MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:54,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 142.6MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 885.05ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 94.9MB in the beginning and 158.6MB in the end (delta: -63.7MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.66ms. Allocated memory is still 197.1MB. Free memory was 158.6MB in the beginning and 155.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.46ms. Allocated memory is still 197.1MB. Free memory was 155.4MB in the beginning and 153.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 739.76ms. Allocated memory is still 197.1MB. Free memory was 153.3MB in the beginning and 132.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9839.24ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 131.3MB in the beginning and 90.0MB in the end (delta: 41.3MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 237.0MB. Free memory is still 89.0MB. 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: 6.3s, 105 PlacesBefore, 37 PlacesAfterwards, 100 TransitionsBefore, 32 TransitionsAfterwards, 1328 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 107 TotalNumberOfCompositions, 3401 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2309, independent: 2153, independent conditional: 0, independent unconditional: 2153, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 846, independent: 819, independent conditional: 0, independent unconditional: 819, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2309, independent: 1334, independent conditional: 0, independent unconditional: 1334, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 846, unknown conditional: 0, unknown unconditional: 846] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, 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)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={4:0}, g=0, mut={3:0}, 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)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1366] 2 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1369] 2 return ((void *)0); [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_true.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, cond={4:0}, g=0, 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: 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. - 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. - 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: 9.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 347 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 367 IncrementalHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 23 mSDtfsCounter, 367 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 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 [2023-11-19 07:47:54,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:57,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:57,515 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:47:57,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:57,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:57,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:57,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:57,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:57,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:57,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:57,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:57,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:57,601 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:57,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:57,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:57,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:57,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:57,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:57,606 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:47:57,607 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:47:57,608 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:47:57,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:57,609 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:57,610 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:47:57,610 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:47:57,611 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:57,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:57,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:57,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:57,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:57,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:57,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:57,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:57,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:57,617 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:47:57,618 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:47:57,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:57,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:57,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:57,620 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:47:57,620 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:57,621 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_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 [2023-11-19 07:47:58,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:58,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:58,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:58,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:58,175 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:58,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-19 07:48:01,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:02,411 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:02,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-19 07:48:02,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data/bfaa9fbb6/c85f30aad83d4d1ca358bad98af1f524/FLAGcf26781f9 [2023-11-19 07:48:02,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/data/bfaa9fbb6/c85f30aad83d4d1ca358bad98af1f524 [2023-11-19 07:48:02,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:02,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:02,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:02,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:02,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:02,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7c2b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02, skipping insertion in model container [2023-11-19 07:48:02,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,611 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:03,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:03,651 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:03,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:03,854 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:03,862 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:03,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03 WrapperNode [2023-11-19 07:48:03,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:03,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:03,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:03,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:03,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,946 INFO L138 Inliner]: procedures = 358, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-11-19 07:48:03,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:03,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:03,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:03,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:03,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:04,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:04,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:04,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:04,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:04,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:04,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:04,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:04,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:04,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:04,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:48:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-19 07:48:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-19 07:48:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-19 07:48:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-19 07:48:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-19 07:48:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:48:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:48:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 07:48:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:48:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:04,121 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:04,635 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:04,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:05,028 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:05,040 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:05,041 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:48:05,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:05 BoogieIcfgContainer [2023-11-19 07:48:05,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:05,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:05,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:05,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:05,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:02" (1/3) ... [2023-11-19 07:48:05,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fae888e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:05, skipping insertion in model container [2023-11-19 07:48:05,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03" (2/3) ... [2023-11-19 07:48:05,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fae888e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:05, skipping insertion in model container [2023-11-19 07:48:05,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:05" (3/3) ... [2023-11-19 07:48:05,064 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_true.i [2023-11-19 07:48:05,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:05,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:48:05,091 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:05,205 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:48:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 109 transitions, 232 flow [2023-11-19 07:48:05,390 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-11-19 07:48:05,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:05,397 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 6. Compared 107 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-11-19 07:48:05,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 109 transitions, 232 flow [2023-11-19 07:48:05,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 101 transitions, 214 flow [2023-11-19 07:48:05,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:05,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 101 transitions, 214 flow [2023-11-19 07:48:05,438 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 101 transitions, 214 flow [2023-11-19 07:48:05,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 214 flow [2023-11-19 07:48:05,504 INFO L124 PetriNetUnfolderBase]: 2/101 cut-off events. [2023-11-19 07:48:05,505 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:05,507 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 6. Compared 106 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-11-19 07:48:05,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 1328 [2023-11-19 07:48:20,683 INFO L134 LiptonReduction]: Checked pairs total: 3460 [2023-11-19 07:48:20,683 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-11-19 07:48:20,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:20,706 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;@35cf3661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:20,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:48:20,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:20,708 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:48:20,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:20,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:20,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:48:20,710 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)] === [2023-11-19 07:48:20,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash 402, now seen corresponding path program 1 times [2023-11-19 07:48:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848043857] [2023-11-19 07:48:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:20,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:20,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:20,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:20,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:48:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:20,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:48:20,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:20,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:20,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:20,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848043857] [2023-11-19 07:48:20,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848043857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:20,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:20,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:48:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037338080] [2023-11-19 07:48:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:20,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 216 [2023-11-19 07:48:20,978 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) [2023-11-19 07:48:20,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:20,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 216 [2023-11-19 07:48:20,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:21,188 INFO L124 PetriNetUnfolderBase]: 161/313 cut-off events. [2023-11-19 07:48:21,188 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:48:21,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 313 events. 161/313 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1271 event pairs, 161 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 585. Up to 305 conditions per place. [2023-11-19 07:48:21,198 INFO L140 encePairwiseOnDemand]: 212/216 looper letters, 24 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-19 07:48:21,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 112 flow [2023-11-19 07:48:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:48:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 232 transitions. [2023-11-19 07:48:21,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-11-19 07:48:21,223 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 232 transitions. [2023-11-19 07:48:21,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 232 transitions. [2023-11-19 07:48:21,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:21,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 232 transitions. [2023-11-19 07:48:21,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:21,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:21,245 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:21,248 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 2 states and 232 transitions. [2023-11-19 07:48:21,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 112 flow [2023-11-19 07:48:21,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:21,255 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 56 flow [2023-11-19 07:48:21,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, 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} [2023-11-19 07:48:21,263 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-11-19 07:48:21,263 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 56 flow [2023-11-19 07:48:21,264 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) [2023-11-19 07:48:21,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:21,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:21,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:21,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:21,476 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)] === [2023-11-19 07:48:21,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 392873, now seen corresponding path program 1 times [2023-11-19 07:48:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569720414] [2023-11-19 07:48:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:21,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:21,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:21,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:21,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:48:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:21,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:21,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:21,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:48:21,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:21,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:48:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:21,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:21,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:21,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569720414] [2023-11-19 07:48:21,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569720414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:21,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:21,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740484966] [2023-11-19 07:48:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:21,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:21,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:21,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 216 [2023-11-19 07:48:21,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 56 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) [2023-11-19 07:48:21,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:21,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 216 [2023-11-19 07:48:21,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:22,056 INFO L124 PetriNetUnfolderBase]: 152/292 cut-off events. [2023-11-19 07:48:22,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:22,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 292 events. 152/292 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1164 event pairs, 152 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 585. Up to 283 conditions per place. [2023-11-19 07:48:22,060 INFO L140 encePairwiseOnDemand]: 212/216 looper letters, 20 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-19 07:48:22,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 96 flow [2023-11-19 07:48:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-11-19 07:48:22,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-11-19 07:48:22,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-11-19 07:48:22,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-11-19 07:48:22,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:22,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-11-19 07:48:22,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:22,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:22,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:22,073 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 56 flow. Second operand 3 states and 312 transitions. [2023-11-19 07:48:22,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 96 flow [2023-11-19 07:48:22,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:22,075 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-11-19 07:48:22,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, 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} [2023-11-19 07:48:22,076 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2023-11-19 07:48:22,076 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-11-19 07:48:22,077 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) [2023-11-19 07:48:22,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:22,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:22,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 07:48:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:22,282 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)] === [2023-11-19 07:48:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash 392875, now seen corresponding path program 1 times [2023-11-19 07:48:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430054223] [2023-11-19 07:48:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:22,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:22,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:48:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:22,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:22,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:22,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:48:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:22,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:48:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:22,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:22,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430054223] [2023-11-19 07:48:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430054223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:22,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370098904] [2023-11-19 07:48:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:22,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 216 [2023-11-19 07:48:22,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 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) [2023-11-19 07:48:22,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:22,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 216 [2023-11-19 07:48:22,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:22,740 INFO L124 PetriNetUnfolderBase]: 143/271 cut-off events. [2023-11-19 07:48:22,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 271 events. 143/271 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1066 event pairs, 143 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 546. Up to 263 conditions per place. [2023-11-19 07:48:22,746 INFO L140 encePairwiseOnDemand]: 212/216 looper letters, 18 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-11-19 07:48:22,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 92 flow [2023-11-19 07:48:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-11-19 07:48:22,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2023-11-19 07:48:22,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-11-19 07:48:22,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-11-19 07:48:22,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:22,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-11-19 07:48:22,755 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) [2023-11-19 07:48:22,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:22,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:22,761 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 298 transitions. [2023-11-19 07:48:22,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 92 flow [2023-11-19 07:48:22,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:22,763 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 52 flow [2023-11-19 07:48:22,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, 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} [2023-11-19 07:48:22,765 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-19 07:48:22,766 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 52 flow [2023-11-19 07:48:22,766 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) [2023-11-19 07:48:22,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:22,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:48:22,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:22,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:22,971 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)] === [2023-11-19 07:48:22,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash 377560286, now seen corresponding path program 1 times [2023-11-19 07:48:22,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:22,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106583071] [2023-11-19 07:48:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:22,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:22,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:48:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:23,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:23,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:23,158 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:48:23,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-19 07:48:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:23,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:23,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106583071] [2023-11-19 07:48:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106583071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667355543] [2023-11-19 07:48:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:23,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 216 [2023-11-19 07:48:23,662 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) [2023-11-19 07:48:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 216 [2023-11-19 07:48:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:23,759 INFO L124 PetriNetUnfolderBase]: 106/210 cut-off events. [2023-11-19 07:48:23,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:23,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 210 events. 106/210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 764 event pairs, 106 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 424. Up to 202 conditions per place. [2023-11-19 07:48:23,761 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 17 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 07:48:23,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 88 flow [2023-11-19 07:48:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-11-19 07:48:23,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-11-19 07:48:23,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-11-19 07:48:23,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-11-19 07:48:23,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:23,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-11-19 07:48:23,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,769 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 52 flow. Second operand 3 states and 296 transitions. [2023-11-19 07:48:23,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 88 flow [2023-11-19 07:48:23,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:23,770 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 50 flow [2023-11-19 07:48:23,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, 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} [2023-11-19 07:48:23,772 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -10 predicate places. [2023-11-19 07:48:23,772 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 50 flow [2023-11-19 07:48:23,772 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) [2023-11-19 07:48:23,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:23,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:48:23,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:23,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:23,982 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)] === [2023-11-19 07:48:23,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash 377560288, now seen corresponding path program 1 times [2023-11-19 07:48:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779552165] [2023-11-19 07:48:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:23,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:48:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:24,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:48:24,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:24,180 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 07:48:24,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-19 07:48:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:24,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:24,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779552165] [2023-11-19 07:48:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779552165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:24,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345182913] [2023-11-19 07:48:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:24,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:24,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 216 [2023-11-19 07:48:24,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 50 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) [2023-11-19 07:48:24,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:24,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 216 [2023-11-19 07:48:24,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:24,733 INFO L124 PetriNetUnfolderBase]: 69/149 cut-off events. [2023-11-19 07:48:24,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:24,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 149 events. 69/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 487 event pairs, 69 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 302. Up to 141 conditions per place. [2023-11-19 07:48:24,734 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 16 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-19 07:48:24,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 84 flow [2023-11-19 07:48:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-11-19 07:48:24,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737654320987654 [2023-11-19 07:48:24,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-11-19 07:48:24,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-11-19 07:48:24,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:24,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-11-19 07:48:24,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:24,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:24,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:24,745 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 50 flow. Second operand 3 states and 307 transitions. [2023-11-19 07:48:24,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 84 flow [2023-11-19 07:48:24,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:24,746 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 48 flow [2023-11-19 07:48:24,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, 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} [2023-11-19 07:48:24,749 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -11 predicate places. [2023-11-19 07:48:24,749 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 48 flow [2023-11-19 07:48:24,750 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) [2023-11-19 07:48:24,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:24,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:24,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:24,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:24,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:24,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2018727483, now seen corresponding path program 1 times [2023-11-19 07:48:24,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:24,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945204993] [2023-11-19 07:48:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:24,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:24,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:24,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:24,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:48:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:25,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:25,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:25,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945204993] [2023-11-19 07:48:25,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945204993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:25,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:25,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:25,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034870321] [2023-11-19 07:48:25,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:25,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:25,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:25,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 216 [2023-11-19 07:48:25,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 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) [2023-11-19 07:48:25,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:25,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 216 [2023-11-19 07:48:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:25,254 INFO L124 PetriNetUnfolderBase]: 97/204 cut-off events. [2023-11-19 07:48:25,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:25,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 204 events. 97/204 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 709 event pairs, 55 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 408. Up to 131 conditions per place. [2023-11-19 07:48:25,256 INFO L140 encePairwiseOnDemand]: 211/216 looper letters, 24 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-19 07:48:25,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 123 flow [2023-11-19 07:48:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-19 07:48:25,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984567901234568 [2023-11-19 07:48:25,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-19 07:48:25,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-19 07:48:25,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:25,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-19 07:48:25,262 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) [2023-11-19 07:48:25,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,266 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 48 flow. Second operand 3 states and 323 transitions. [2023-11-19 07:48:25,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 123 flow [2023-11-19 07:48:25,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:25,268 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 74 flow [2023-11-19 07:48:25,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-19 07:48:25,269 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-19 07:48:25,270 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 74 flow [2023-11-19 07:48:25,270 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) [2023-11-19 07:48:25,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:25,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:25,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:25,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:25,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:25,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1881638229, now seen corresponding path program 1 times [2023-11-19 07:48:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:25,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8963254] [2023-11-19 07:48:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:25,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:25,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:25,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:25,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 07:48:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:25,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:25,650 INFO L378 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 [2023-11-19 07:48:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:25,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:25,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8963254] [2023-11-19 07:48:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8963254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:25,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:25,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:25,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322659133] [2023-11-19 07:48:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:25,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:25,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:25,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 216 [2023-11-19 07:48:25,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:25,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 216 [2023-11-19 07:48:25,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:25,811 INFO L124 PetriNetUnfolderBase]: 43/120 cut-off events. [2023-11-19 07:48:25,811 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-19 07:48:25,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 120 events. 43/120 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 380 event pairs, 14 based on Foata normal form. 14/134 useless extension candidates. Maximal degree in co-relation 287. Up to 71 conditions per place. [2023-11-19 07:48:25,813 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 19 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-19 07:48:25,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 132 flow [2023-11-19 07:48:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-11-19 07:48:25,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-11-19 07:48:25,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-11-19 07:48:25,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-11-19 07:48:25,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:25,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-11-19 07:48:25,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,820 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 74 flow. Second operand 3 states and 312 transitions. [2023-11-19 07:48:25,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 132 flow [2023-11-19 07:48:25,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:25,827 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 74 flow [2023-11-19 07:48:25,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, 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} [2023-11-19 07:48:25,828 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-19 07:48:25,828 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 74 flow [2023-11-19 07:48:25,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:25,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:25,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:26,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:26,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1515773560, now seen corresponding path program 1 times [2023-11-19 07:48:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:26,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093114373] [2023-11-19 07:48:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:26,035 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 [2023-11-19 07:48:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:26,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:26,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 07:48:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:26,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:26,318 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 07:48:26,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:48:26,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-19 07:48:26,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-19 07:48:26,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-19 07:48:26,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-19 07:48:26,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-19 07:48:26,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-19 07:48:26,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-19 07:48:26,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-19 07:48:26,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-19 07:48:26,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-19 07:48:26,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-19 07:48:26,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-19 07:48:26,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-19 07:48:26,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:26,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:26,529 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:26,534 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:48:26,534 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:48:26,576 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 07:48:26,578 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:48:26,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:48:26 BasicIcfg [2023-11-19 07:48:26,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:48:26,585 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:48:26,586 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:48:26,586 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:48:26,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:05" (3/4) ... [2023-11-19 07:48:26,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:48:26,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:48:26,590 INFO L158 Benchmark]: Toolchain (without parser) took 24098.95ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 87.1MB in the beginning and 38.1MB in the end (delta: 49.0MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. [2023-11-19 07:48:26,591 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:26,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1367.57ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 76.9MB in the end (delta: 9.9MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-11-19 07:48:26,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.95ms. Allocated memory is still 113.2MB. Free memory was 76.2MB in the beginning and 73.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:26,592 INFO L158 Benchmark]: Boogie Preprocessor took 63.16ms. Allocated memory is still 113.2MB. Free memory was 73.5MB in the beginning and 70.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:26,592 INFO L158 Benchmark]: RCFGBuilder took 1035.44ms. Allocated memory is still 113.2MB. Free memory was 70.6MB in the beginning and 44.7MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:26,593 INFO L158 Benchmark]: TraceAbstraction took 21534.91ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 44.1MB in the beginning and 38.1MB in the end (delta: 6.0MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:26,593 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 140.5MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:26,595 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1367.57ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 76.9MB in the end (delta: 9.9MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.95ms. Allocated memory is still 113.2MB. Free memory was 76.2MB in the beginning and 73.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.16ms. Allocated memory is still 113.2MB. Free memory was 73.5MB in the beginning and 70.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1035.44ms. Allocated memory is still 113.2MB. Free memory was 70.6MB in the beginning and 44.7MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 21534.91ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 44.1MB in the beginning and 38.1MB in the end (delta: 6.0MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 140.5MB. Free memory is still 38.1MB. 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: 15.2s, 106 PlacesBefore, 37 PlacesAfterwards, 101 TransitionsBefore, 32 TransitionsAfterwards, 1328 CoEnabledTransitionPairs, 6 FixpointIterations, 53 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 107 TotalNumberOfCompositions, 3460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2206, independent: 2046, independent conditional: 0, independent unconditional: 2046, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 791, independent: 764, independent conditional: 0, independent unconditional: 764, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2206, independent: 1282, independent conditional: 0, independent unconditional: 1282, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 791, unknown conditional: 0, unknown unconditional: 791] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, 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}, 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}, t1={5:0}, t2={7:0}] [L1366] 2 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1369] 2 return ((void *)0); [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_true.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, cond={4:0}, g=0, 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: 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. - 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. - 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: 21.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 362 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 26 mSDtfsCounter, 362 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 22 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, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 28 ConstructedInterpolants, 8 QuantifiedInterpolants, 194 SizeOfPredicates, 4 NumberOfNonLiveVariables, 459 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 [2023-11-19 07:48:26,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d14015e-3d8d-46f9-bfa4-aa7cea397036/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample