./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/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_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/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_fd61e73c-4225-499f-8195-2079d26727bb/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 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:55,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:55,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:40:55,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:55,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:55,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:55,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:55,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:55,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:55,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:55,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:55,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:55,645 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:55,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:55,646 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:55,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:55,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:55,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:55,649 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:40:55,650 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:40:55,650 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:40:55,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:55,652 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:40:55,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:55,653 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:55,654 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:55,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:55,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:55,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:55,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:55,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:55,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:55,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:55,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:55,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:55,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:55,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:55,660 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:55,661 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_fd61e73c-4225-499f-8195-2079d26727bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2023-11-19 07:40:56,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:56,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:56,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:56,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:56,060 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:56,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-19 07:40:59,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:59,540 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:59,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-19 07:40:59,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/data/9176d1318/59052c66db8842379cd0965c42418ee9/FLAG23d4e192c [2023-11-19 07:40:59,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/data/9176d1318/59052c66db8842379cd0965c42418ee9 [2023-11-19 07:40:59,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:59,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:59,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:59,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:59,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:59,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:59" (1/1) ... [2023-11-19 07:40:59,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f630822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:59, skipping insertion in model container [2023-11-19 07:40:59,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:59" (1/1) ... [2023-11-19 07:40:59,644 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:00,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:00,126 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:00,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:00,229 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:00,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00 WrapperNode [2023-11-19 07:41:00,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:00,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:00,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:00,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:00,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,285 INFO L138 Inliner]: procedures = 163, calls = 53, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 115 [2023-11-19 07:41:00,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:00,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:00,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:00,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:00,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:00,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:00,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:00,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:00,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (1/1) ... [2023-11-19 07:41:00,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:00,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:00,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 07:41:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 07:41:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:41:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:41:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:41:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:00,428 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 07:41:00,603 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:00,605 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:01,040 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:01,053 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:01,054 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:01,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:01 BoogieIcfgContainer [2023-11-19 07:41:01,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:01,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:01,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:01,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:01,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:59" (1/3) ... [2023-11-19 07:41:01,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555d1f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:01, skipping insertion in model container [2023-11-19 07:41:01,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:00" (2/3) ... [2023-11-19 07:41:01,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555d1f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:01, skipping insertion in model container [2023-11-19 07:41:01,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:01" (3/3) ... [2023-11-19 07:41:01,069 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-11-19 07:41:01,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:01,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-19 07:41:01,092 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:41:01,179 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:41:01,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 187 transitions, 388 flow [2023-11-19 07:41:01,387 INFO L124 PetriNetUnfolderBase]: 8/185 cut-off events. [2023-11-19 07:41:01,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:41:01,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 8/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 226 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-19 07:41:01,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 187 transitions, 388 flow [2023-11-19 07:41:01,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 180 transitions, 372 flow [2023-11-19 07:41:01,426 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:41:01,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 180 transitions, 372 flow [2023-11-19 07:41:01,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 180 transitions, 372 flow [2023-11-19 07:41:01,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 180 transitions, 372 flow [2023-11-19 07:41:01,518 INFO L124 PetriNetUnfolderBase]: 8/180 cut-off events. [2023-11-19 07:41:01,518 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:41:01,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 8/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 225 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-19 07:41:01,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 7092 [2023-11-19 07:41:07,486 INFO L134 LiptonReduction]: Checked pairs total: 19798 [2023-11-19 07:41:07,488 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-11-19 07:41:07,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:07,523 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;@17418522, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:07,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 07:41:07,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:41:07,525 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:41:07,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:07,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:07,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:41:07,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 663, now seen corresponding path program 1 times [2023-11-19 07:41:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614294898] [2023-11-19 07:41:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,681 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 07:41:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:07,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614294898] [2023-11-19 07:41:07,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614294898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:07,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:07,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:41:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375902055] [2023-11-19 07:41:07,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:07,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:41:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:41:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:41:07,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 370 [2023-11-19 07:41:07,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 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 07:41:07,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:07,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 370 [2023-11-19 07:41:07,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:08,565 INFO L124 PetriNetUnfolderBase]: 3037/4932 cut-off events. [2023-11-19 07:41:08,565 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-19 07:41:08,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 4932 events. 3037/4932 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25609 event pairs, 3037 based on Foata normal form. 144/4457 useless extension candidates. Maximal degree in co-relation 9640. Up to 4837 conditions per place. [2023-11-19 07:41:08,620 INFO L140 encePairwiseOnDemand]: 361/370 looper letters, 48 selfloop transitions, 0 changer transitions 2/52 dead transitions. [2023-11-19 07:41:08,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 216 flow [2023-11-19 07:41:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:41:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 401 transitions. [2023-11-19 07:41:08,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418918918918919 [2023-11-19 07:41:08,649 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 401 transitions. [2023-11-19 07:41:08,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 401 transitions. [2023-11-19 07:41:08,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:08,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 401 transitions. [2023-11-19 07:41:08,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 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 07:41:08,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 370.0) internal successors, (1110), 3 states have internal predecessors, (1110), 0 states have call successors, (0), 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 07:41:08,675 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 370.0) internal successors, (1110), 3 states have internal predecessors, (1110), 0 states have call successors, (0), 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 07:41:08,678 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 142 flow. Second operand 2 states and 401 transitions. [2023-11-19 07:41:08,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 216 flow [2023-11-19 07:41:08,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:41:08,693 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 104 flow [2023-11-19 07:41:08,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-11-19 07:41:08,702 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2023-11-19 07:41:08,702 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 104 flow [2023-11-19 07:41:08,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 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 07:41:08,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:08,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:41:08,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:08,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:08,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,707 INFO L85 PathProgramCache]: Analyzing trace with hash 649670, now seen corresponding path program 1 times [2023-11-19 07:41:08,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:08,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83908951] [2023-11-19 07:41:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:08,931 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 07:41:08,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83908951] [2023-11-19 07:41:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83908951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:08,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:08,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:08,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542496912] [2023-11-19 07:41:08,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:09,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-11-19 07:41:09,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 07:41:09,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:09,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-11-19 07:41:09,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:09,837 INFO L124 PetriNetUnfolderBase]: 2768/4501 cut-off events. [2023-11-19 07:41:09,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 4501 events. 2768/4501 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22980 event pairs, 2768 based on Foata normal form. 0/4043 useless extension candidates. Maximal degree in co-relation 8916. Up to 4405 conditions per place. [2023-11-19 07:41:09,876 INFO L140 encePairwiseOnDemand]: 366/370 looper letters, 44 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-19 07:41:09,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 192 flow [2023-11-19 07:41:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-11-19 07:41:09,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2023-11-19 07:41:09,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-11-19 07:41:09,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-11-19 07:41:09,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:09,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-11-19 07:41:09,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 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 07:41:09,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:09,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:09,960 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 104 flow. Second operand 3 states and 531 transitions. [2023-11-19 07:41:09,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 192 flow [2023-11-19 07:41:09,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:41:09,963 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-11-19 07:41:09,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-19 07:41:09,965 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -11 predicate places. [2023-11-19 07:41:09,965 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-11-19 07:41:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 07:41:09,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:09,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:41:09,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:09,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:09,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash 649669, now seen corresponding path program 1 times [2023-11-19 07:41:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:09,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650783015] [2023-11-19 07:41:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,244 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 07:41:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:10,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650783015] [2023-11-19 07:41:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650783015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396161870] [2023-11-19 07:41:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:10,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:10,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:10,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 370 [2023-11-19 07:41:10,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 07:41:10,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:10,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 370 [2023-11-19 07:41:10,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:10,829 INFO L124 PetriNetUnfolderBase]: 2753/4468 cut-off events. [2023-11-19 07:41:10,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:10,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 4468 events. 2753/4468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22773 event pairs, 2753 based on Foata normal form. 0/4027 useless extension candidates. Maximal degree in co-relation 8853. Up to 4373 conditions per place. [2023-11-19 07:41:10,863 INFO L140 encePairwiseOnDemand]: 366/370 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-19 07:41:10,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 188 flow [2023-11-19 07:41:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-11-19 07:41:10,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873873873873874 [2023-11-19 07:41:10,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-11-19 07:41:10,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-11-19 07:41:10,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:10,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-11-19 07:41:10,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 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 07:41:10,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:10,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:10,875 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 541 transitions. [2023-11-19 07:41:10,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 188 flow [2023-11-19 07:41:10,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:10,880 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 100 flow [2023-11-19 07:41:10,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-19 07:41:10,882 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -13 predicate places. [2023-11-19 07:41:10,886 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 100 flow [2023-11-19 07:41:10,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 07:41:10,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:10,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:10,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:10,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:10,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1299578380, now seen corresponding path program 1 times [2023-11-19 07:41:10,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755758594] [2023-11-19 07:41:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:10,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:11,040 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 07:41:11,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755758594] [2023-11-19 07:41:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755758594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:11,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047053518] [2023-11-19 07:41:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:11,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 370 [2023-11-19 07:41:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 07:41:11,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:11,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 370 [2023-11-19 07:41:11,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:11,802 INFO L124 PetriNetUnfolderBase]: 4045/6534 cut-off events. [2023-11-19 07:41:11,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:11,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13004 conditions, 6534 events. 4045/6534 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 36729 event pairs, 1503 based on Foata normal form. 0/5967 useless extension candidates. Maximal degree in co-relation 13000. Up to 3412 conditions per place. [2023-11-19 07:41:11,846 INFO L140 encePairwiseOnDemand]: 362/370 looper letters, 77 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2023-11-19 07:41:11,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 343 flow [2023-11-19 07:41:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-19 07:41:11,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306306306306307 [2023-11-19 07:41:11,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-19 07:41:11,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-19 07:41:11,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:11,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-19 07:41:11,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 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 07:41:11,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:11,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:11,858 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 100 flow. Second operand 3 states and 589 transitions. [2023-11-19 07:41:11,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 343 flow [2023-11-19 07:41:11,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:11,862 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 134 flow [2023-11-19 07:41:11,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-19 07:41:11,863 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -11 predicate places. [2023-11-19 07:41:11,863 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 134 flow [2023-11-19 07:41:11,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 07:41:11,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:11,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:11,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:11,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1216259379, now seen corresponding path program 1 times [2023-11-19 07:41:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:11,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538580403] [2023-11-19 07:41:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:11,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,053 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 07:41:12,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538580403] [2023-11-19 07:41:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538580403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:12,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:12,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356988777] [2023-11-19 07:41:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:12,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:12,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-11-19 07:41:12,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 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 07:41:12,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:12,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-11-19 07:41:12,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:12,709 INFO L124 PetriNetUnfolderBase]: 1975/3620 cut-off events. [2023-11-19 07:41:12,709 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2023-11-19 07:41:12,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7794 conditions, 3620 events. 1975/3620 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21847 event pairs, 745 based on Foata normal form. 162/3471 useless extension candidates. Maximal degree in co-relation 7789. Up to 1859 conditions per place. [2023-11-19 07:41:12,730 INFO L140 encePairwiseOnDemand]: 361/370 looper letters, 77 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-11-19 07:41:12,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 407 flow [2023-11-19 07:41:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 740 transitions. [2023-11-19 07:41:12,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 07:41:12,734 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 740 transitions. [2023-11-19 07:41:12,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 740 transitions. [2023-11-19 07:41:12,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:12,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 740 transitions. [2023-11-19 07:41:12,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 07:41:12,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:12,743 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:12,744 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 134 flow. Second operand 4 states and 740 transitions. [2023-11-19 07:41:12,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 407 flow [2023-11-19 07:41:12,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:12,756 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 174 flow [2023-11-19 07:41:12,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-19 07:41:12,757 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2023-11-19 07:41:12,758 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 174 flow [2023-11-19 07:41:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 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 07:41:12,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:12,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:12,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:12,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:12,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1086974110, now seen corresponding path program 1 times [2023-11-19 07:41:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162904404] [2023-11-19 07:41:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,855 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 07:41:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162904404] [2023-11-19 07:41:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162904404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:12,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:12,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:12,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727945403] [2023-11-19 07:41:12,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:12,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:12,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:12,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 370 [2023-11-19 07:41:12,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 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 07:41:12,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:12,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 370 [2023-11-19 07:41:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:13,516 INFO L124 PetriNetUnfolderBase]: 2970/5364 cut-off events. [2023-11-19 07:41:13,517 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2023-11-19 07:41:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13520 conditions, 5364 events. 2970/5364 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 35841 event pairs, 886 based on Foata normal form. 0/4740 useless extension candidates. Maximal degree in co-relation 13514. Up to 2655 conditions per place. [2023-11-19 07:41:13,554 INFO L140 encePairwiseOnDemand]: 365/370 looper letters, 90 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-11-19 07:41:13,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 98 transitions, 497 flow [2023-11-19 07:41:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-11-19 07:41:13,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2023-11-19 07:41:13,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-11-19 07:41:13,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-11-19 07:41:13,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:13,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-11-19 07:41:13,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 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 07:41:13,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:13,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:13,567 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 174 flow. Second operand 3 states and 585 transitions. [2023-11-19 07:41:13,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 98 transitions, 497 flow [2023-11-19 07:41:13,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:41:13,571 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 199 flow [2023-11-19 07:41:13,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-19 07:41:13,573 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-11-19 07:41:13,573 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 199 flow [2023-11-19 07:41:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 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 07:41:13,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:13,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:13,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:41:13,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:13,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:13,576 INFO L85 PathProgramCache]: Analyzing trace with hash -68828170, now seen corresponding path program 1 times [2023-11-19 07:41:13,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:13,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589340129] [2023-11-19 07:41:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:13,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:13,822 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 07:41:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589340129] [2023-11-19 07:41:13,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589340129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:13,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:13,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90139149] [2023-11-19 07:41:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:13,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:13,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:13,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 370 [2023-11-19 07:41:13,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 07:41:13,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:13,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 370 [2023-11-19 07:41:13,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:14,749 INFO L124 PetriNetUnfolderBase]: 2751/4997 cut-off events. [2023-11-19 07:41:14,749 INFO L125 PetriNetUnfolderBase]: For 1648/1648 co-relation queries the response was YES. [2023-11-19 07:41:14,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13395 conditions, 4997 events. 2751/4997 cut-off events. For 1648/1648 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 32492 event pairs, 1318 based on Foata normal form. 12/4613 useless extension candidates. Maximal degree in co-relation 13388. Up to 2941 conditions per place. [2023-11-19 07:41:14,790 INFO L140 encePairwiseOnDemand]: 360/370 looper letters, 148 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-11-19 07:41:14,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 155 transitions, 831 flow [2023-11-19 07:41:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:41:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2023-11-19 07:41:14,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2023-11-19 07:41:14,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1134 transitions. [2023-11-19 07:41:14,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1134 transitions. [2023-11-19 07:41:14,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:14,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1134 transitions. [2023-11-19 07:41:14,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 07:41:14,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 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 07:41:14,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 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 07:41:14,814 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 199 flow. Second operand 6 states and 1134 transitions. [2023-11-19 07:41:14,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 155 transitions, 831 flow [2023-11-19 07:41:14,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 155 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:14,823 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 226 flow [2023-11-19 07:41:14,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-11-19 07:41:14,825 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2023-11-19 07:41:14,826 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 226 flow [2023-11-19 07:41:14,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 07:41:14,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:14,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:14,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:41:14,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:14,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:14,829 INFO L85 PathProgramCache]: Analyzing trace with hash 950986438, now seen corresponding path program 1 times [2023-11-19 07:41:14,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:14,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491881830] [2023-11-19 07:41:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:14,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:14,975 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 07:41:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491881830] [2023-11-19 07:41:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491881830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:14,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:14,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487966579] [2023-11-19 07:41:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:14,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:15,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 370 [2023-11-19 07:41:15,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 07:41:15,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:15,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 370 [2023-11-19 07:41:15,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:15,729 INFO L124 PetriNetUnfolderBase]: 2230/4618 cut-off events. [2023-11-19 07:41:15,729 INFO L125 PetriNetUnfolderBase]: For 3562/3575 co-relation queries the response was YES. [2023-11-19 07:41:15,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14161 conditions, 4618 events. 2230/4618 cut-off events. For 3562/3575 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 33645 event pairs, 738 based on Foata normal form. 419/4594 useless extension candidates. Maximal degree in co-relation 14150. Up to 2975 conditions per place. [2023-11-19 07:41:15,760 INFO L140 encePairwiseOnDemand]: 348/370 looper letters, 69 selfloop transitions, 27 changer transitions 0/97 dead transitions. [2023-11-19 07:41:15,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 590 flow [2023-11-19 07:41:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-19 07:41:15,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828828828828829 [2023-11-19 07:41:15,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-19 07:41:15,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-19 07:41:15,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:15,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-19 07:41:15,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 07:41:15,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:15,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:15,770 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 226 flow. Second operand 3 states and 536 transitions. [2023-11-19 07:41:15,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 590 flow [2023-11-19 07:41:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 576 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:41:15,804 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 403 flow [2023-11-19 07:41:15,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-11-19 07:41:15,807 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-11-19 07:41:15,807 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 403 flow [2023-11-19 07:41:15,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 07:41:15,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:15,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:15,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:41:15,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:15,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash -838905626, now seen corresponding path program 1 times [2023-11-19 07:41:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985036132] [2023-11-19 07:41:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,280 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 07:41:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:16,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985036132] [2023-11-19 07:41:16,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985036132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:16,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:16,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478889181] [2023-11-19 07:41:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:16,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:16,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:16,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:16,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 370 [2023-11-19 07:41:16,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 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 07:41:16,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:16,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 370 [2023-11-19 07:41:16,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:16,808 INFO L124 PetriNetUnfolderBase]: 713/1880 cut-off events. [2023-11-19 07:41:16,808 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2023-11-19 07:41:16,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 1880 events. 713/1880 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12734 event pairs, 205 based on Foata normal form. 99/1888 useless extension candidates. Maximal degree in co-relation 6596. Up to 1316 conditions per place. [2023-11-19 07:41:16,819 INFO L140 encePairwiseOnDemand]: 363/370 looper letters, 64 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-19 07:41:16,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 524 flow [2023-11-19 07:41:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 706 transitions. [2023-11-19 07:41:16,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47702702702702704 [2023-11-19 07:41:16,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 706 transitions. [2023-11-19 07:41:16,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 706 transitions. [2023-11-19 07:41:16,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:16,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 706 transitions. [2023-11-19 07:41:16,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 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 07:41:16,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:16,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:16,831 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 403 flow. Second operand 4 states and 706 transitions. [2023-11-19 07:41:16,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 524 flow [2023-11-19 07:41:16,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 478 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-19 07:41:16,840 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 301 flow [2023-11-19 07:41:16,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2023-11-19 07:41:16,842 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-11-19 07:41:16,842 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 301 flow [2023-11-19 07:41:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 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 07:41:16,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:16,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:41:16,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:16,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1725379388, now seen corresponding path program 1 times [2023-11-19 07:41:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068467521] [2023-11-19 07:41:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,119 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 07:41:17,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:17,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068467521] [2023-11-19 07:41:17,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068467521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:17,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:17,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:17,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238996035] [2023-11-19 07:41:17,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:17,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:17,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:17,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 370 [2023-11-19 07:41:17,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 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 07:41:17,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:17,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 370 [2023-11-19 07:41:17,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:17,548 INFO L124 PetriNetUnfolderBase]: 400/1180 cut-off events. [2023-11-19 07:41:17,549 INFO L125 PetriNetUnfolderBase]: For 740/746 co-relation queries the response was YES. [2023-11-19 07:41:17,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3789 conditions, 1180 events. 400/1180 cut-off events. For 740/746 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7451 event pairs, 131 based on Foata normal form. 32/1168 useless extension candidates. Maximal degree in co-relation 3781. Up to 840 conditions per place. [2023-11-19 07:41:17,556 INFO L140 encePairwiseOnDemand]: 365/370 looper letters, 72 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-19 07:41:17,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 548 flow [2023-11-19 07:41:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 679 transitions. [2023-11-19 07:41:17,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878378378378376 [2023-11-19 07:41:17,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 679 transitions. [2023-11-19 07:41:17,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 679 transitions. [2023-11-19 07:41:17,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:17,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 679 transitions. [2023-11-19 07:41:17,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 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 07:41:17,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:17,567 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:17,567 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 301 flow. Second operand 4 states and 679 transitions. [2023-11-19 07:41:17,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 548 flow [2023-11-19 07:41:17,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 515 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:17,572 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 276 flow [2023-11-19 07:41:17,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-11-19 07:41:17,574 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-11-19 07:41:17,575 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 276 flow [2023-11-19 07:41:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 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 07:41:17,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:17,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:41:17,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:17,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1027497283, now seen corresponding path program 1 times [2023-11-19 07:41:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539792836] [2023-11-19 07:41:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,766 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 07:41:17,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:17,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539792836] [2023-11-19 07:41:17,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539792836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:17,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:17,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:17,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691935243] [2023-11-19 07:41:17,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:17,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:17,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:17,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:17,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-11-19 07:41:17,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 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 07:41:17,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:17,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-11-19 07:41:17,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:18,002 INFO L124 PetriNetUnfolderBase]: 320/964 cut-off events. [2023-11-19 07:41:18,002 INFO L125 PetriNetUnfolderBase]: For 459/463 co-relation queries the response was YES. [2023-11-19 07:41:18,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 964 events. 320/964 cut-off events. For 459/463 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5564 event pairs, 241 based on Foata normal form. 0/940 useless extension candidates. Maximal degree in co-relation 2945. Up to 924 conditions per place. [2023-11-19 07:41:18,008 INFO L140 encePairwiseOnDemand]: 367/370 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-19 07:41:18,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 372 flow [2023-11-19 07:41:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-11-19 07:41:18,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720720720720721 [2023-11-19 07:41:18,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-11-19 07:41:18,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-11-19 07:41:18,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:18,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-11-19 07:41:18,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 07:41:18,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:18,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:18,018 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 276 flow. Second operand 3 states and 524 transitions. [2023-11-19 07:41:18,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 372 flow [2023-11-19 07:41:18,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:18,022 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 257 flow [2023-11-19 07:41:18,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-19 07:41:18,024 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -7 predicate places. [2023-11-19 07:41:18,024 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 257 flow [2023-11-19 07:41:18,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 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 07:41:18,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:18,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:18,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:41:18,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:18,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1027497282, now seen corresponding path program 1 times [2023-11-19 07:41:18,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:18,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107129882] [2023-11-19 07:41:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,179 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 07:41:18,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107129882] [2023-11-19 07:41:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107129882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:18,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:18,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639892224] [2023-11-19 07:41:18,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:18,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:18,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:18,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 370 [2023-11-19 07:41:18,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 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 07:41:18,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:18,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 370 [2023-11-19 07:41:18,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:18,382 INFO L124 PetriNetUnfolderBase]: 240/744 cut-off events. [2023-11-19 07:41:18,383 INFO L125 PetriNetUnfolderBase]: For 290/292 co-relation queries the response was YES. [2023-11-19 07:41:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2198 conditions, 744 events. 240/744 cut-off events. For 290/292 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3850 event pairs, 187 based on Foata normal form. 0/740 useless extension candidates. Maximal degree in co-relation 2190. Up to 715 conditions per place. [2023-11-19 07:41:18,386 INFO L140 encePairwiseOnDemand]: 367/370 looper letters, 51 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-19 07:41:18,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 349 flow [2023-11-19 07:41:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-11-19 07:41:18,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603603603603604 [2023-11-19 07:41:18,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-11-19 07:41:18,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-11-19 07:41:18,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:18,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-11-19 07:41:18,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 07:41:18,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:18,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:18,396 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 257 flow. Second operand 3 states and 511 transitions. [2023-11-19 07:41:18,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 349 flow [2023-11-19 07:41:18,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:18,399 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 243 flow [2023-11-19 07:41:18,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-19 07:41:18,400 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-11-19 07:41:18,400 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 243 flow [2023-11-19 07:41:18,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 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 07:41:18,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:18,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:18,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:41:18,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:18,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:18,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1736947567, now seen corresponding path program 1 times [2023-11-19 07:41:18,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:18,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995753214] [2023-11-19 07:41:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,549 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 07:41:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:18,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995753214] [2023-11-19 07:41:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995753214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:18,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:18,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909396319] [2023-11-19 07:41:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:18,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 370 [2023-11-19 07:41:18,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 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 07:41:18,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:18,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 370 [2023-11-19 07:41:18,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:18,729 INFO L124 PetriNetUnfolderBase]: 240/738 cut-off events. [2023-11-19 07:41:18,729 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-11-19 07:41:18,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 738 events. 240/738 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3802 event pairs, 113 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 2176. Up to 512 conditions per place. [2023-11-19 07:41:18,733 INFO L140 encePairwiseOnDemand]: 366/370 looper letters, 71 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-19 07:41:18,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 482 flow [2023-11-19 07:41:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-11-19 07:41:18,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2023-11-19 07:41:18,737 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-11-19 07:41:18,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-11-19 07:41:18,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:18,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-11-19 07:41:18,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 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 07:41:18,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 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 07:41:18,745 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 243 flow. Second operand 4 states and 728 transitions. [2023-11-19 07:41:18,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 482 flow [2023-11-19 07:41:18,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:18,748 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 241 flow [2023-11-19 07:41:18,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-19 07:41:18,749 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-11-19 07:41:18,749 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 241 flow [2023-11-19 07:41:18,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 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 07:41:18,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:18,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:18,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:41:18,751 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-19 07:41:18,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1995380807, now seen corresponding path program 1 times [2023-11-19 07:41:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:18,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092393065] [2023-11-19 07:41:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,115 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 07:41:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092393065] [2023-11-19 07:41:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092393065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920840465] [2023-11-19 07:41:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:19,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:19,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-11-19 07:41:19,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 07:41:19,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:19,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-11-19 07:41:19,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:19,329 INFO L124 PetriNetUnfolderBase]: 240/736 cut-off events. [2023-11-19 07:41:19,329 INFO L125 PetriNetUnfolderBase]: For 375/377 co-relation queries the response was YES. [2023-11-19 07:41:19,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 736 events. 240/736 cut-off events. For 375/377 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3787 event pairs, 187 based on Foata normal form. 4/740 useless extension candidates. Maximal degree in co-relation 2248. Up to 711 conditions per place. [2023-11-19 07:41:19,332 INFO L140 encePairwiseOnDemand]: 368/370 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-11-19 07:41:19,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 341 flow [2023-11-19 07:41:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-11-19 07:41:19,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2023-11-19 07:41:19,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-11-19 07:41:19,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-11-19 07:41:19,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:19,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-11-19 07:41:19,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 07:41:19,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:19,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 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 07:41:19,342 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 241 flow. Second operand 3 states and 530 transitions. [2023-11-19 07:41:19,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 341 flow [2023-11-19 07:41:19,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 335 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:19,345 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-11-19 07:41:19,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-11-19 07:41:19,346 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2023-11-19 07:41:19,346 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-11-19 07:41:19,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 07:41:19,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-19 07:41:19,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-19 07:41:19,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-19 07:41:19,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-19 07:41:19,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2023-11-19 07:41:19,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2023-11-19 07:41:19,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2023-11-19 07:41:19,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2023-11-19 07:41:19,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-19 07:41:19,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-19 07:41:19,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-19 07:41:19,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-19 07:41:19,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2023-11-19 07:41:19,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-11-19 07:41:19,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-11-19 07:41:19,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:41:19,353 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:19,356 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:41:19,357 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:41:19,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:41:19 BasicIcfg [2023-11-19 07:41:19,361 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:41:19,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:41:19,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:41:19,362 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:41:19,363 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:01" (3/4) ... [2023-11-19 07:41:19,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:41:19,370 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-19 07:41:19,370 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-19 07:41:19,377 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 07:41:19,377 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 07:41:19,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:41:19,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:41:19,476 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:41:19,477 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:41:19,477 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:41:19,478 INFO L158 Benchmark]: Toolchain (without parser) took 19895.71ms. Allocated memory was 142.6MB in the beginning and 425.7MB in the end (delta: 283.1MB). Free memory was 103.2MB in the beginning and 335.6MB in the end (delta: -232.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,478 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory was 84.1MB in the beginning and 84.0MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:19,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.28ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 103.3MB in the end (delta: -131.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.71ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 100.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,480 INFO L158 Benchmark]: Boogie Preprocessor took 41.44ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 99.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,480 INFO L158 Benchmark]: RCFGBuilder took 729.87ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 80.2MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,480 INFO L158 Benchmark]: TraceAbstraction took 18299.45ms. Allocated memory was 142.6MB in the beginning and 425.7MB in the end (delta: 283.1MB). Free memory was 79.3MB in the beginning and 340.9MB in the end (delta: -261.6MB). Peak memory consumption was 252.8MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,481 INFO L158 Benchmark]: Witness Printer took 115.64ms. Allocated memory is still 425.7MB. Free memory was 340.9MB in the beginning and 335.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:41:19,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory was 84.1MB in the beginning and 84.0MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.28ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 103.3MB in the end (delta: -131.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.71ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 100.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.44ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 99.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.87ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 80.2MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18299.45ms. Allocated memory was 142.6MB in the beginning and 425.7MB in the end (delta: 283.1MB). Free memory was 79.3MB in the beginning and 340.9MB in the end (delta: -261.6MB). Peak memory consumption was 252.8MB. Max. memory is 16.1GB. * Witness Printer took 115.64ms. Allocated memory is still 425.7MB. Free memory was 340.9MB in the beginning and 335.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 179 PlacesBefore, 65 PlacesAfterwards, 180 TransitionsBefore, 65 TransitionsAfterwards, 7092 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 105 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 1 ChoiceCompositions, 183 TotalNumberOfCompositions, 19798 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6294, independent: 5837, independent conditional: 0, independent unconditional: 5837, dependent: 457, dependent conditional: 0, dependent unconditional: 457, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3729, independent: 3653, independent conditional: 0, independent unconditional: 3653, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6294, independent: 2184, independent conditional: 0, independent unconditional: 2184, dependent: 381, dependent conditional: 0, dependent unconditional: 381, unknown: 3729, unknown conditional: 0, unknown unconditional: 3729] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 707]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 220 locations, 15 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: 18.1s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1390 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 908 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 280 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2107 IncrementalHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 280 mSolverCounterUnsat, 58 mSDtfsCounter, 2107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=8, InterpolantAutomatonStates: 48, 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, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:41:19,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd61e73c-4225-499f-8195-2079d26727bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE