./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 e7bb482b 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_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/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_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:24,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:25,073 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:53:25,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:25,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:25,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:25,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:25,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:25,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:25,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:25,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:25,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:25,138 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:25,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:25,140 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:25,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:25,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:25,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:25,142 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:53:25,142 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:53:25,143 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:53:25,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:25,144 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:53:25,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:53:25,145 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:25,146 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:25,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:25,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:25,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:25,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:25,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:25,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:25,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:25,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:25,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:25,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:25,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:25,152 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:25,152 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_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2023-11-06 21:53:25,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:25,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:25,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:25,540 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:25,541 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:25,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-06 21:53:28,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:28,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:28,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-06 21:53:28,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/data/483ada8bd/5835483215874b70af235eabd7f97b22/FLAG7243a82cc [2023-11-06 21:53:28,959 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/data/483ada8bd/5835483215874b70af235eabd7f97b22 [2023-11-06 21:53:28,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:28,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:28,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:28,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:28,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:28,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:28" (1/1) ... [2023-11-06 21:53:28,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d79aaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:28, skipping insertion in model container [2023-11-06 21:53:28,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:28" (1/1) ... [2023-11-06 21:53:29,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:29,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:29,435 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:29,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:29,567 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:29,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29 WrapperNode [2023-11-06 21:53:29,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:29,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:29,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:29,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:29,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,660 INFO L138 Inliner]: procedures = 163, calls = 53, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 115 [2023-11-06 21:53:29,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:29,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:29,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:29,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:29,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:29,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:29,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:29,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:29,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:29,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:29,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:53:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 21:53:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 21:53:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:53:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:53:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:53:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 21:53:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 21:53:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:53:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:29,799 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:53:29,970 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:29,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:30,376 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:30,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:30,386 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:53:30,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:30 BoogieIcfgContainer [2023-11-06 21:53:30,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:30,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:30,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:30,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:30,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:28" (1/3) ... [2023-11-06 21:53:30,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20415e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:30, skipping insertion in model container [2023-11-06 21:53:30,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29" (2/3) ... [2023-11-06 21:53:30,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20415e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:30, skipping insertion in model container [2023-11-06 21:53:30,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:30" (3/3) ... [2023-11-06 21:53:30,398 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-11-06 21:53:30,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:30,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-06 21:53:30,415 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:53:30,505 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:53:30,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 187 transitions, 388 flow [2023-11-06 21:53:30,634 INFO L124 PetriNetUnfolderBase]: 8/185 cut-off events. [2023-11-06 21:53:30,634 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:53:30,642 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. [2023-11-06 21:53:30,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 187 transitions, 388 flow [2023-11-06 21:53:30,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 180 transitions, 372 flow [2023-11-06 21:53:30,674 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:53:30,693 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 180 transitions, 372 flow [2023-11-06 21:53:30,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 180 transitions, 372 flow [2023-11-06 21:53:30,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 180 transitions, 372 flow [2023-11-06 21:53:30,783 INFO L124 PetriNetUnfolderBase]: 8/180 cut-off events. [2023-11-06 21:53:30,783 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:53:30,785 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. [2023-11-06 21:53:30,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 7092 [2023-11-06 21:53:37,307 INFO L134 LiptonReduction]: Checked pairs total: 19798 [2023-11-06 21:53:37,308 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-11-06 21:53:37,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:53:37,332 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;@68da6de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:53:37,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-06 21:53:37,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:53:37,334 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:53:37,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:53:37,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:37,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:53:37,336 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)] === [2023-11-06 21:53:37,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash 663, now seen corresponding path program 1 times [2023-11-06 21:53:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:37,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981879281] [2023-11-06 21:53:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:37,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981879281] [2023-11-06 21:53:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981879281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:37,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:53:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146581055] [2023-11-06 21:53:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:53:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:37,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:53:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:53:37,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 370 [2023-11-06 21:53:37,513 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) [2023-11-06 21:53:37,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:37,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 370 [2023-11-06 21:53:37,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:38,233 INFO L124 PetriNetUnfolderBase]: 3037/4932 cut-off events. [2023-11-06 21:53:38,234 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-06 21:53:38,245 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. [2023-11-06 21:53:38,276 INFO L140 encePairwiseOnDemand]: 361/370 looper letters, 48 selfloop transitions, 0 changer transitions 2/52 dead transitions. [2023-11-06 21:53:38,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 216 flow [2023-11-06 21:53:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:53:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:53:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 401 transitions. [2023-11-06 21:53:38,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418918918918919 [2023-11-06 21:53:38,299 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 401 transitions. [2023-11-06 21:53:38,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 401 transitions. [2023-11-06 21:53:38,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:38,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 401 transitions. [2023-11-06 21:53:38,312 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) [2023-11-06 21:53:38,319 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) [2023-11-06 21:53:38,320 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) [2023-11-06 21:53:38,322 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 142 flow. Second operand 2 states and 401 transitions. [2023-11-06 21:53:38,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 216 flow [2023-11-06 21:53:38,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:53:38,334 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 104 flow [2023-11-06 21:53:38,337 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} [2023-11-06 21:53:38,343 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2023-11-06 21:53:38,343 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 104 flow [2023-11-06 21:53:38,344 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) [2023-11-06 21:53:38,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:38,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:53:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:53:38,345 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)] === [2023-11-06 21:53:38,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash 649670, now seen corresponding path program 1 times [2023-11-06 21:53:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497890765] [2023-11-06 21:53:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:38,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:38,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497890765] [2023-11-06 21:53:38,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497890765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:38,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:38,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:53:38,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408721025] [2023-11-06 21:53:38,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:38,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:38,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:38,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-11-06 21:53:38,684 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) [2023-11-06 21:53:38,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:38,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-11-06 21:53:38,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:39,307 INFO L124 PetriNetUnfolderBase]: 2768/4501 cut-off events. [2023-11-06 21:53:39,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:53:39,313 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. [2023-11-06 21:53:39,338 INFO L140 encePairwiseOnDemand]: 366/370 looper letters, 44 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-06 21:53:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 192 flow [2023-11-06 21:53:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-11-06 21:53:39,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2023-11-06 21:53:39,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-11-06 21:53:39,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-11-06 21:53:39,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:39,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-11-06 21:53:39,346 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) [2023-11-06 21:53:39,352 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) [2023-11-06 21:53:39,353 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) [2023-11-06 21:53:39,353 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 104 flow. Second operand 3 states and 531 transitions. [2023-11-06 21:53:39,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 192 flow [2023-11-06 21:53:39,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:53:39,357 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-11-06 21:53:39,358 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} [2023-11-06 21:53:39,362 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -11 predicate places. [2023-11-06 21:53:39,362 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-11-06 21:53:39,363 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) [2023-11-06 21:53:39,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:39,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:53:39,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:53:39,366 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)] === [2023-11-06 21:53:39,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash 649669, now seen corresponding path program 1 times [2023-11-06 21:53:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451514035] [2023-11-06 21:53:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:39,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:39,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451514035] [2023-11-06 21:53:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451514035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:39,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:53:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977593594] [2023-11-06 21:53:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:39,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:39,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:39,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:39,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 370 [2023-11-06 21:53:39,609 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) [2023-11-06 21:53:39,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:39,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 370 [2023-11-06 21:53:39,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:40,108 INFO L124 PetriNetUnfolderBase]: 2753/4468 cut-off events. [2023-11-06 21:53:40,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:53:40,114 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. [2023-11-06 21:53:40,138 INFO L140 encePairwiseOnDemand]: 366/370 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 21:53:40,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 188 flow [2023-11-06 21:53:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-11-06 21:53:40,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873873873873874 [2023-11-06 21:53:40,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-11-06 21:53:40,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-11-06 21:53:40,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:40,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-11-06 21:53:40,144 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) [2023-11-06 21:53:40,147 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) [2023-11-06 21:53:40,149 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) [2023-11-06 21:53:40,149 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 541 transitions. [2023-11-06 21:53:40,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 188 flow [2023-11-06 21:53:40,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:40,151 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 100 flow [2023-11-06 21:53:40,151 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} [2023-11-06 21:53:40,152 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -13 predicate places. [2023-11-06 21:53:40,152 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 100 flow [2023-11-06 21:53:40,153 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) [2023-11-06 21:53:40,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:40,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:40,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:53:40,154 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)] === [2023-11-06 21:53:40,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1299578380, now seen corresponding path program 1 times [2023-11-06 21:53:40,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397598145] [2023-11-06 21:53:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:40,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397598145] [2023-11-06 21:53:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397598145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:40,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:40,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:53:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037624813] [2023-11-06 21:53:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:40,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 370 [2023-11-06 21:53:40,254 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) [2023-11-06 21:53:40,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:40,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 370 [2023-11-06 21:53:40,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:41,064 INFO L124 PetriNetUnfolderBase]: 4045/6534 cut-off events. [2023-11-06 21:53:41,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:53:41,073 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. [2023-11-06 21:53:41,111 INFO L140 encePairwiseOnDemand]: 362/370 looper letters, 77 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2023-11-06 21:53:41,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 343 flow [2023-11-06 21:53:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-06 21:53:41,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306306306306307 [2023-11-06 21:53:41,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-06 21:53:41,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-06 21:53:41,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:41,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-06 21:53:41,118 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) [2023-11-06 21:53:41,121 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) [2023-11-06 21:53:41,122 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) [2023-11-06 21:53:41,123 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 100 flow. Second operand 3 states and 589 transitions. [2023-11-06 21:53:41,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 343 flow [2023-11-06 21:53:41,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:41,126 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 134 flow [2023-11-06 21:53:41,126 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} [2023-11-06 21:53:41,128 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -11 predicate places. [2023-11-06 21:53:41,128 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 134 flow [2023-11-06 21:53:41,128 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) [2023-11-06 21:53:41,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:41,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:41,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:53:41,129 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)] === [2023-11-06 21:53:41,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1216259379, now seen corresponding path program 1 times [2023-11-06 21:53:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764404029] [2023-11-06 21:53:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764404029] [2023-11-06 21:53:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764404029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852932466] [2023-11-06 21:53:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:41,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:53:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:53:41,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:53:41,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-11-06 21:53:41,575 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) [2023-11-06 21:53:41,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:41,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-11-06 21:53:41,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:42,144 INFO L124 PetriNetUnfolderBase]: 1975/3620 cut-off events. [2023-11-06 21:53:42,145 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2023-11-06 21:53:42,151 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. [2023-11-06 21:53:42,167 INFO L140 encePairwiseOnDemand]: 361/370 looper letters, 77 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-11-06 21:53:42,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 407 flow [2023-11-06 21:53:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:53:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:53:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 740 transitions. [2023-11-06 21:53:42,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-06 21:53:42,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 740 transitions. [2023-11-06 21:53:42,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 740 transitions. [2023-11-06 21:53:42,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:42,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 740 transitions. [2023-11-06 21:53:42,176 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) [2023-11-06 21:53:42,181 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) [2023-11-06 21:53:42,182 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) [2023-11-06 21:53:42,183 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 134 flow. Second operand 4 states and 740 transitions. [2023-11-06 21:53:42,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 407 flow [2023-11-06 21:53:42,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:42,200 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 174 flow [2023-11-06 21:53:42,201 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} [2023-11-06 21:53:42,204 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2023-11-06 21:53:42,204 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 174 flow [2023-11-06 21:53:42,205 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) [2023-11-06 21:53:42,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:42,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:42,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:53:42,206 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)] === [2023-11-06 21:53:42,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1086974110, now seen corresponding path program 1 times [2023-11-06 21:53:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:42,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670999811] [2023-11-06 21:53:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:42,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670999811] [2023-11-06 21:53:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670999811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:42,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:42,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:53:42,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402391689] [2023-11-06 21:53:42,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:42,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:42,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:42,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:42,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:42,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 370 [2023-11-06 21:53:42,359 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) [2023-11-06 21:53:42,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:42,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 370 [2023-11-06 21:53:42,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:43,144 INFO L124 PetriNetUnfolderBase]: 2970/5364 cut-off events. [2023-11-06 21:53:43,144 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2023-11-06 21:53:43,152 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. [2023-11-06 21:53:43,175 INFO L140 encePairwiseOnDemand]: 365/370 looper letters, 90 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-11-06 21:53:43,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 98 transitions, 497 flow [2023-11-06 21:53:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-11-06 21:53:43,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2023-11-06 21:53:43,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-11-06 21:53:43,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-11-06 21:53:43,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:43,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-11-06 21:53:43,181 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) [2023-11-06 21:53:43,186 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) [2023-11-06 21:53:43,187 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) [2023-11-06 21:53:43,187 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 174 flow. Second operand 3 states and 585 transitions. [2023-11-06 21:53:43,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 98 transitions, 497 flow [2023-11-06 21:53:43,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:53:43,192 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 199 flow [2023-11-06 21:53:43,192 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} [2023-11-06 21:53:43,194 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-11-06 21:53:43,194 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 199 flow [2023-11-06 21:53:43,195 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) [2023-11-06 21:53:43,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:43,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:43,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:53:43,195 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)] === [2023-11-06 21:53:43,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash -68828170, now seen corresponding path program 1 times [2023-11-06 21:53:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:43,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338301945] [2023-11-06 21:53:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:43,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338301945] [2023-11-06 21:53:43,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338301945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:43,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921375328] [2023-11-06 21:53:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:43,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:53:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:53:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:53:43,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 370 [2023-11-06 21:53:43,402 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) [2023-11-06 21:53:43,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:43,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 370 [2023-11-06 21:53:43,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:44,231 INFO L124 PetriNetUnfolderBase]: 2751/4997 cut-off events. [2023-11-06 21:53:44,231 INFO L125 PetriNetUnfolderBase]: For 1648/1648 co-relation queries the response was YES. [2023-11-06 21:53:44,241 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. [2023-11-06 21:53:44,262 INFO L140 encePairwiseOnDemand]: 360/370 looper letters, 148 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-11-06 21:53:44,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 155 transitions, 831 flow [2023-11-06 21:53:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:53:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:53:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2023-11-06 21:53:44,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2023-11-06 21:53:44,267 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1134 transitions. [2023-11-06 21:53:44,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1134 transitions. [2023-11-06 21:53:44,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:44,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1134 transitions. [2023-11-06 21:53:44,272 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) [2023-11-06 21:53:44,277 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) [2023-11-06 21:53:44,280 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) [2023-11-06 21:53:44,280 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 199 flow. Second operand 6 states and 1134 transitions. [2023-11-06 21:53:44,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 155 transitions, 831 flow [2023-11-06 21:53:44,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 155 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:44,287 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 226 flow [2023-11-06 21:53:44,288 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} [2023-11-06 21:53:44,288 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2023-11-06 21:53:44,289 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 226 flow [2023-11-06 21:53:44,289 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) [2023-11-06 21:53:44,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:44,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:44,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:53:44,290 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)] === [2023-11-06 21:53:44,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash 950986438, now seen corresponding path program 1 times [2023-11-06 21:53:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238905965] [2023-11-06 21:53:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:44,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:44,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238905965] [2023-11-06 21:53:44,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238905965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:44,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:44,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:44,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702436780] [2023-11-06 21:53:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:44,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:44,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:44,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:44,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 370 [2023-11-06 21:53:44,435 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) [2023-11-06 21:53:44,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:44,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 370 [2023-11-06 21:53:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:45,167 INFO L124 PetriNetUnfolderBase]: 2230/4618 cut-off events. [2023-11-06 21:53:45,167 INFO L125 PetriNetUnfolderBase]: For 3562/3575 co-relation queries the response was YES. [2023-11-06 21:53:45,178 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. [2023-11-06 21:53:45,197 INFO L140 encePairwiseOnDemand]: 348/370 looper letters, 69 selfloop transitions, 27 changer transitions 0/97 dead transitions. [2023-11-06 21:53:45,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 590 flow [2023-11-06 21:53:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-06 21:53:45,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828828828828829 [2023-11-06 21:53:45,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-06 21:53:45,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-06 21:53:45,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:45,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-06 21:53:45,203 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) [2023-11-06 21:53:45,206 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) [2023-11-06 21:53:45,207 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) [2023-11-06 21:53:45,207 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 226 flow. Second operand 3 states and 536 transitions. [2023-11-06 21:53:45,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 590 flow [2023-11-06 21:53:45,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 576 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 21:53:45,245 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 403 flow [2023-11-06 21:53:45,246 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} [2023-11-06 21:53:45,248 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-11-06 21:53:45,248 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 403 flow [2023-11-06 21:53:45,249 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) [2023-11-06 21:53:45,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:45,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:45,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:53:45,250 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)] === [2023-11-06 21:53:45,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -838905626, now seen corresponding path program 1 times [2023-11-06 21:53:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141653094] [2023-11-06 21:53:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:45,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:45,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141653094] [2023-11-06 21:53:45,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141653094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:45,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:45,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:53:45,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944141308] [2023-11-06 21:53:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:45,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:53:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:53:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:53:45,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 370 [2023-11-06 21:53:45,845 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) [2023-11-06 21:53:45,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:45,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 370 [2023-11-06 21:53:45,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:46,216 INFO L124 PetriNetUnfolderBase]: 713/1880 cut-off events. [2023-11-06 21:53:46,216 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2023-11-06 21:53:46,221 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. [2023-11-06 21:53:46,230 INFO L140 encePairwiseOnDemand]: 363/370 looper letters, 64 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-06 21:53:46,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 524 flow [2023-11-06 21:53:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:53:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:53:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 706 transitions. [2023-11-06 21:53:46,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47702702702702704 [2023-11-06 21:53:46,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 706 transitions. [2023-11-06 21:53:46,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 706 transitions. [2023-11-06 21:53:46,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:46,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 706 transitions. [2023-11-06 21:53:46,239 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) [2023-11-06 21:53:46,243 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) [2023-11-06 21:53:46,244 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) [2023-11-06 21:53:46,244 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 403 flow. Second operand 4 states and 706 transitions. [2023-11-06 21:53:46,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 524 flow [2023-11-06 21:53:46,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 478 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-06 21:53:46,255 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 301 flow [2023-11-06 21:53:46,256 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} [2023-11-06 21:53:46,257 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-11-06 21:53:46,257 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 301 flow [2023-11-06 21:53:46,257 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) [2023-11-06 21:53:46,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:46,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:46,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:53:46,258 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)] === [2023-11-06 21:53:46,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1725379388, now seen corresponding path program 1 times [2023-11-06 21:53:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:46,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836488061] [2023-11-06 21:53:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:46,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:46,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836488061] [2023-11-06 21:53:46,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836488061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:46,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:53:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315076238] [2023-11-06 21:53:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:46,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:53:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:53:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:53:46,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 370 [2023-11-06 21:53:46,702 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) [2023-11-06 21:53:46,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:46,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 370 [2023-11-06 21:53:46,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:46,980 INFO L124 PetriNetUnfolderBase]: 400/1180 cut-off events. [2023-11-06 21:53:46,980 INFO L125 PetriNetUnfolderBase]: For 740/746 co-relation queries the response was YES. [2023-11-06 21:53:46,982 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. [2023-11-06 21:53:46,987 INFO L140 encePairwiseOnDemand]: 365/370 looper letters, 72 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-06 21:53:46,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 548 flow [2023-11-06 21:53:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:53:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:53:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 679 transitions. [2023-11-06 21:53:46,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878378378378376 [2023-11-06 21:53:46,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 679 transitions. [2023-11-06 21:53:46,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 679 transitions. [2023-11-06 21:53:46,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:46,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 679 transitions. [2023-11-06 21:53:46,995 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) [2023-11-06 21:53:46,999 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) [2023-11-06 21:53:47,000 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) [2023-11-06 21:53:47,000 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 301 flow. Second operand 4 states and 679 transitions. [2023-11-06 21:53:47,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 548 flow [2023-11-06 21:53:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 515 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 21:53:47,006 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 276 flow [2023-11-06 21:53:47,007 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} [2023-11-06 21:53:47,007 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-11-06 21:53:47,007 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 276 flow [2023-11-06 21:53:47,008 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) [2023-11-06 21:53:47,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:47,008 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] [2023-11-06 21:53:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:53:47,009 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)] === [2023-11-06 21:53:47,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1027497283, now seen corresponding path program 1 times [2023-11-06 21:53:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653772917] [2023-11-06 21:53:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:47,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653772917] [2023-11-06 21:53:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653772917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:47,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:47,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:47,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710510820] [2023-11-06 21:53:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:47,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:53:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:53:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:53:47,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 370 [2023-11-06 21:53:47,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:47,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:47,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 370 [2023-11-06 21:53:47,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:47,466 INFO L124 PetriNetUnfolderBase]: 320/964 cut-off events. [2023-11-06 21:53:47,466 INFO L125 PetriNetUnfolderBase]: For 459/463 co-relation queries the response was YES. [2023-11-06 21:53:47,468 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. [2023-11-06 21:53:47,472 INFO L140 encePairwiseOnDemand]: 367/370 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-06 21:53:47,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 372 flow [2023-11-06 21:53:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-11-06 21:53:47,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2023-11-06 21:53:47,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-11-06 21:53:47,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-11-06 21:53:47,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:47,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-11-06 21:53:47,479 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) [2023-11-06 21:53:47,482 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) [2023-11-06 21:53:47,483 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) [2023-11-06 21:53:47,483 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 276 flow. Second operand 3 states and 530 transitions. [2023-11-06 21:53:47,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 372 flow [2023-11-06 21:53:47,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:47,488 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 257 flow [2023-11-06 21:53:47,488 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} [2023-11-06 21:53:47,489 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -7 predicate places. [2023-11-06 21:53:47,489 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 257 flow [2023-11-06 21:53:47,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:47,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:47,490 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] [2023-11-06 21:53:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:53:47,490 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)] === [2023-11-06 21:53:47,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1027497282, now seen corresponding path program 1 times [2023-11-06 21:53:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:47,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983453839] [2023-11-06 21:53:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983453839] [2023-11-06 21:53:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983453839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:47,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:47,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:47,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490218848] [2023-11-06 21:53:47,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:47,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:53:47,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:53:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:53:47,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 370 [2023-11-06 21:53:47,691 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) [2023-11-06 21:53:47,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:47,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 370 [2023-11-06 21:53:47,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:47,856 INFO L124 PetriNetUnfolderBase]: 240/744 cut-off events. [2023-11-06 21:53:47,857 INFO L125 PetriNetUnfolderBase]: For 290/292 co-relation queries the response was YES. [2023-11-06 21:53:47,858 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. [2023-11-06 21:53:47,861 INFO L140 encePairwiseOnDemand]: 367/370 looper letters, 51 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-06 21:53:47,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 349 flow [2023-11-06 21:53:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-11-06 21:53:47,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603603603603604 [2023-11-06 21:53:47,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-11-06 21:53:47,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-11-06 21:53:47,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:47,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-11-06 21:53:47,868 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) [2023-11-06 21:53:47,871 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) [2023-11-06 21:53:47,872 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) [2023-11-06 21:53:47,872 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 257 flow. Second operand 3 states and 511 transitions. [2023-11-06 21:53:47,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 349 flow [2023-11-06 21:53:47,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:47,876 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 243 flow [2023-11-06 21:53:47,877 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} [2023-11-06 21:53:47,877 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-11-06 21:53:47,877 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 243 flow [2023-11-06 21:53:47,878 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) [2023-11-06 21:53:47,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:47,878 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] [2023-11-06 21:53:47,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:53:47,879 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)] === [2023-11-06 21:53:47,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1736947567, now seen corresponding path program 1 times [2023-11-06 21:53:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833854762] [2023-11-06 21:53:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:48,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833854762] [2023-11-06 21:53:48,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833854762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:48,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:48,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343980586] [2023-11-06 21:53:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:48,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:53:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:53:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:53:48,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 370 [2023-11-06 21:53:48,096 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) [2023-11-06 21:53:48,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:48,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 370 [2023-11-06 21:53:48,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:48,319 INFO L124 PetriNetUnfolderBase]: 240/738 cut-off events. [2023-11-06 21:53:48,319 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-11-06 21:53:48,321 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. [2023-11-06 21:53:48,324 INFO L140 encePairwiseOnDemand]: 366/370 looper letters, 71 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-06 21:53:48,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 482 flow [2023-11-06 21:53:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:53:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:53:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-11-06 21:53:48,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2023-11-06 21:53:48,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-11-06 21:53:48,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-11-06 21:53:48,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:48,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-11-06 21:53:48,333 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) [2023-11-06 21:53:48,337 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) [2023-11-06 21:53:48,339 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) [2023-11-06 21:53:48,339 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 243 flow. Second operand 4 states and 728 transitions. [2023-11-06 21:53:48,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 482 flow [2023-11-06 21:53:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:48,344 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 241 flow [2023-11-06 21:53:48,344 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} [2023-11-06 21:53:48,345 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-11-06 21:53:48,345 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 241 flow [2023-11-06 21:53:48,346 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) [2023-11-06 21:53:48,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:48,346 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] [2023-11-06 21:53:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:53:48,347 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)] === [2023-11-06 21:53:48,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1995380807, now seen corresponding path program 1 times [2023-11-06 21:53:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:48,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110123494] [2023-11-06 21:53:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110123494] [2023-11-06 21:53:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110123494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:48,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:48,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:53:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070139471] [2023-11-06 21:53:48,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:48,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:48,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:48,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:48,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-11-06 21:53:48,869 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) [2023-11-06 21:53:48,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-11-06 21:53:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:49,029 INFO L124 PetriNetUnfolderBase]: 240/736 cut-off events. [2023-11-06 21:53:49,029 INFO L125 PetriNetUnfolderBase]: For 375/377 co-relation queries the response was YES. [2023-11-06 21:53:49,031 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. [2023-11-06 21:53:49,032 INFO L140 encePairwiseOnDemand]: 368/370 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-11-06 21:53:49,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 341 flow [2023-11-06 21:53:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-11-06 21:53:49,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2023-11-06 21:53:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-11-06 21:53:49,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-11-06 21:53:49,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:49,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-11-06 21:53:49,039 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) [2023-11-06 21:53:49,042 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) [2023-11-06 21:53:49,043 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) [2023-11-06 21:53:49,043 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 241 flow. Second operand 3 states and 530 transitions. [2023-11-06 21:53:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 341 flow [2023-11-06 21:53:49,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 335 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:53:49,046 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-11-06 21:53:49,046 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} [2023-11-06 21:53:49,047 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2023-11-06 21:53:49,047 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-11-06 21:53:49,048 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) [2023-11-06 21:53:49,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-06 21:53:49,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-06 21:53:49,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-06 21:53:49,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-06 21:53:49,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2023-11-06 21:53:49,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2023-11-06 21:53:49,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2023-11-06 21:53:49,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2023-11-06 21:53:49,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-06 21:53:49,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-06 21:53:49,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-06 21:53:49,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-06 21:53:49,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2023-11-06 21:53:49,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-11-06 21:53:49,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-11-06 21:53:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:53:49,055 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:49,058 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:53:49,059 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:53:49,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:53:49 BasicIcfg [2023-11-06 21:53:49,063 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:53:49,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:53:49,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:53:49,064 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:53:49,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:30" (3/4) ... [2023-11-06 21:53:49,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:53:49,071 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-06 21:53:49,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-06 21:53:49,079 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 21:53:49,079 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:53:49,080 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:53:49,080 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:53:49,141 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:53:49,142 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:53:49,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:53:49,143 INFO L158 Benchmark]: Toolchain (without parser) took 20179.80ms. Allocated memory was 113.2MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 69.4MB in the beginning and 420.8MB in the end (delta: -351.4MB). Peak memory consumption was 678.3MB. Max. memory is 16.1GB. [2023-11-06 21:53:49,143 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 113.2MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:53:49,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.02ms. Allocated memory is still 113.2MB. Free memory was 69.4MB in the beginning and 49.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 21:53:49,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.56ms. Allocated memory is still 113.2MB. Free memory was 49.5MB in the beginning and 83.5MB in the end (delta: -34.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-11-06 21:53:49,145 INFO L158 Benchmark]: Boogie Preprocessor took 38.90ms. Allocated memory is still 113.2MB. Free memory was 83.5MB in the beginning and 82.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:53:49,145 INFO L158 Benchmark]: RCFGBuilder took 686.48ms. Allocated memory is still 113.2MB. Free memory was 82.1MB in the beginning and 63.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 21:53:49,146 INFO L158 Benchmark]: TraceAbstraction took 18671.83ms. Allocated memory was 113.2MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 62.2MB in the beginning and 425.0MB in the end (delta: -362.8MB). Peak memory consumption was 664.8MB. Max. memory is 16.1GB. [2023-11-06 21:53:49,146 INFO L158 Benchmark]: Witness Printer took 78.88ms. Allocated memory is still 1.1GB. Free memory was 425.0MB in the beginning and 420.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:53:49,148 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 113.2MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.02ms. Allocated memory is still 113.2MB. Free memory was 69.4MB in the beginning and 49.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.56ms. Allocated memory is still 113.2MB. Free memory was 49.5MB in the beginning and 83.5MB in the end (delta: -34.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.90ms. Allocated memory is still 113.2MB. Free memory was 83.5MB in the beginning and 82.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 686.48ms. Allocated memory is still 113.2MB. Free memory was 82.1MB in the beginning and 63.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18671.83ms. Allocated memory was 113.2MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 62.2MB in the beginning and 425.0MB in the end (delta: -362.8MB). Peak memory consumption was 664.8MB. Max. memory is 16.1GB. * Witness Printer took 78.88ms. Allocated memory is still 1.1GB. Free memory was 425.0MB in the beginning and 420.8MB in the end (delta: 4.2MB). 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: 6.6s, 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: 18.5s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1394 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 910 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2114 IncrementalHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 279 mSolverCounterUnsat, 58 mSDtfsCounter, 2114 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, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1543 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! [2023-11-06 21:53:49,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54478460-8151-44b1-b870-9179ac949a9c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE